UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 10-Q
 QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2019March 31, 2020
OR
 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                     to                     

Commission File Number 1-33579
INTERDIGITAL, INC.
(Exact Name of Registrant as Specified in Its Charter)
Pennsylvania 82-4936666
(State or Other Jurisdiction of
Incorporation or Organization)
 
(I.R.S. Employer
Identification No.)
200 Bellevue Parkway, Suite 300, Wilmington, DE 19809-3727
(Address of Principal Executive Offices and Zip Code)
(302281-3600
(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Exchange Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, par value $0.01 per shareIDCCNASDAQ Stock Market LLC
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days. Yes No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerAccelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company  

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No þ
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Common Stock, par value $0.01 per share31,127,27330,751,518
Title of ClassOutstanding at July 30, 2019May 5, 2020
 



INDEX

  
 PAGES
 
 
 
InterDigital® is a registered trademark of InterDigital, Inc. All other trademarks, service marks and/or trade names appearing in this Quarterly Report on Form 10-Q are the property of their respective holders.



PART I — FINANCIAL INFORMATION
Item 1. FINANCIAL STATEMENTS
INTERDIGITAL, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED BALANCE SHEETS
(in thousands, except per share data)
(unaudited)
JUNE 30,
2019
 DECEMBER 31,
2018
MARCH 31,
2020
 DECEMBER 31,
2019
ASSETS      
CURRENT ASSETS:      
Cash and cash equivalents$531,698
 $475,056
$515,793
 $745,491
Short-term investments299,461
 470,724
265,107
 179,204
Accounts receivable, less allowances of $537 and $69357,183

35,032
Accounts receivable, less allowances of $537 and $53725,608

28,272
Prepaid and other current assets52,656

43,438
69,337

63,365
Total current assets940,998
 1,024,250
875,845
 1,016,332
PROPERTY AND EQUIPMENT, NET10,736

10,051
10,243

10,217
PATENTS, NET438,732
 454,567
425,685
 436,339
DEFERRED TAX ASSETS83,202
 77,225
73,811
 73,168
OTHER NON-CURRENT ASSETS71,398

60,465
79,146

76,026
604,068
 602,308
588,885
 595,750
TOTAL ASSETS$1,545,066
 $1,626,558
$1,464,730
 $1,612,082
      
LIABILITIES AND SHAREHOLDERS’ EQUITY      
CURRENT LIABILITIES:      
Current portion of long-term debt$91,954
 $
$
 $94,170
Accounts payable14,455
 19,367
12,204
 13,393
Accrued compensation and related expenses25,214
 26,838
18,937
 29,162
Deferred revenue82,575

111,672
126,298

146,654
Taxes payable637
 1,508
225
 51
Dividends payable10,895
 11,627
10,762
 10,746
Other accrued expenses17,168
 8,383
17,407
 11,382
Total current liabilities242,898
 179,395
185,833
 305,558
LONG-TERM DEBT342,417
 317,377
354,823
 350,588
LONG-TERM DEFERRED REVENUE121,477

157,634
104,497

123,653
OTHER LONG-TERM LIABILITIES38,034
 34,139
43,981
 46,002
TOTAL LIABILITIES744,826
 688,545
689,134
 825,801
COMMITMENTS AND CONTINGENCIES

 


 

SHAREHOLDERS’ EQUITY:      
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding
 

 
Common Stock, $0.01 par value, 100,000 shares authorized, 71,260 and 71,134 shares issued and 31,126 and 33,529 shares outstanding712
 711
Common Stock, $0.01 par value, 100,000 shares authorized, 71,322 and 71,268 shares issued and 30,749 and 30,701 shares outstanding713
 712
Additional paid-in capital724,170
 685,512
729,541
 727,402
Retained earnings1,418,628
 1,435,970
1,402,048
 1,412,779
Accumulated other comprehensive loss(350) (2,471)(42) (74)
2,143,160
 2,119,722
2,132,260
 2,140,819
Treasury stock, 40,134 and 37,605 shares of common held at cost1,354,262
 1,182,993
Treasury stock, 40,573 and 40,567 shares of common held at cost1,379,611
 1,379,262
Total InterDigital, Inc. shareholders’ equity788,898
 936,729
752,649
 761,557
Noncontrolling interest11,342
 1,284
22,947
 24,724
Total equity800,240
 938,013
775,596
 786,281
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY$1,545,066
 $1,626,558
$1,464,730
 $1,612,082

The accompanying notes are an integral part of these statements.

INTERDIGITAL, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(in thousands, except per share data)
(unaudited)
FOR THE THREE MONTHS ENDED JUNE 30, FOR THE SIX MONTHS ENDED JUNE 30, FOR THE THREE MONTHS ENDED MARCH 31,
2019 2018 2019 2018 2020 2019
REVENUES:           
Patent licensing royalties$73,567
 $68,875
 $139,945
 $155,973
 $72,998
 $66,378
Technology solutions2,042
 680
 4,070
 1,026
 3,212
 2,028
Patent sales
 
 225
 
 
 225
75,609
 69,555
 144,240
 156,999
 76,210
 68,631
           
OPERATING EXPENSES:           
Patent administration and licensing37,353
 26,487
 73,424
 53,403
 40,108
 36,071
Development17,027
 15,829
 35,522
 32,003
 18,818
 18,495
Selling, general and administrative12,314
 11,559
 26,529
 25,763
 12,603
 14,215
66,694
 53,875
 135,475
 111,169
 71,529
 68,781

           
Income from operations8,915
 15,680
 8,765
 45,830
 
Income (loss) from operations4,681
 (150)

           
INTEREST EXPENSE(9,907) (8,960) (19,385) (18,203) (10,545) (9,478)
OTHER INCOME (NET)12,354
 4,113
 15,969
 7,020
 
Income before income taxes11,362
 10,833
 5,349
 34,647
 
OTHER INCOME (EXPENSE), NET6,023
 3,615
Income (loss) before income taxes159
 (6,013)
INCOME TAX BENEFIT (PROVISION)(4,984) (1,057) (3,185) 3,858
 (1,820) 1,799
NET INCOME$6,378

$9,776
 $2,164
 $38,505
 
NET INCOME (LOSS)$(1,661)
$(4,214)
Net loss attributable to noncontrolling interest(1,365) (1,190) (2,776) (2,691) (1,777) (1,411)
NET INCOME ATTRIBUTABLE TO INTERDIGITAL, INC.$7,743
 $10,966
 $4,940
 $41,196
 
NET INCOME PER COMMON SHARE — BASIC$0.25
 $0.32
 $0.15
 $1.19
 
NET INCOME (LOSS) ATTRIBUTABLE TO INTERDIGITAL, INC.$116
 $(2,803)
NET INCOME (LOSS) PER COMMON SHARE — BASIC$
 $(0.09)
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING — BASIC31,547
 34,769
 32,076
 34,705
 30,722
 32,611
NET INCOME PER COMMON SHARE — DILUTED$0.24
 $0.31
 $0.15
 $1.16
 
NET INCOME (LOSS) PER COMMON SHARE — DILUTED$
 $(0.09)
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING — DILUTED31,776
 35,631
 32,366
 35,619
 30,920
 32,611

The accompanying notes are an integral part of these statements.

INTERDIGITAL, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(in thousands)
(unaudited)

 FOR THE THREE MONTHS ENDED JUNE 30, FOR THE SIX MONTHS ENDED JUNE 30,
 2019 2018 2019 2018
Net income$6,378
 $9,776
 $2,164
 $38,505
Unrealized gain (loss) on investments, net of tax1,076
 376
 2,121
 (1,371)
Comprehensive income$7,454
 $10,152
 $4,285
 $37,134
Comprehensive loss attributable to noncontrolling interest(1,365) (1,190) (2,776) (2,691)
Total comprehensive income attributable to InterDigital, Inc.$8,819
 $11,342
 $7,061
 $39,825

 FOR THE THREE MONTHS ENDED MARCH 31,
 2020 2019
Net income (loss)$(1,661) $(4,214)
Unrealized gain (loss) on investments, net of tax32
 1,045
Comprehensive income (loss)$(1,629) $(3,169)
Comprehensive loss attributable to noncontrolling interest(1,777) (1,411)
Total comprehensive income (loss) attributable to InterDigital, Inc.$148
 $(1,758)
The accompanying notes are an integral part of these statements.


INTERDIGITAL, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
(in thousands, except per share data)
(unaudited)
         
Accumulated
Other
Comprehensive
 Income (Loss)
        
 Common Stock 
Additional
 Paid-In Capital
 Retained Earnings  Treasury Stock 
Non-Controlling
Interest
 
Total
Shareholders'
Equity
 Shares Amount     Shares Amount 
BALANCE, DECEMBER 31, 201770,749
 $707
 $680,040
 $1,257,632
 $(2,083) 36,127
 $(1,072,488) $9,340

873,148
Cumulative effect of change in accounting principle
 
 
 161,701
 (449) 
 
 
 161,252
Net income attributable to InterDigital, Inc.
 
 
 30,230
 
 
 
 
 30,230
Net loss attributable to noncontrolling interest
 
 
 
 
 
 
 (1,501) (1,501)
Net change in unrealized gain (loss) on short-term investments
 
 
 
 (1,747) 
 
 
 (1,747)
Dividends declared ($0.35 per share)
 
 115
 (12,280) 
 
 
 
 (12,165)
Issuance of common stock, net208
 2
 (8,279) 
 
 
 
 
 (8,277)
Amortization of unearned compensation
 
 816
 
 
 
 
 
 816
Repurchase of common stock
 
 
 
 
 84
 (6,024) 
 (6,024)
BALANCE, MARCH 31, 201870,957
 $709
 $672,692
 $1,437,283
 $(4,279) 36,211
 $(1,078,512) $7,839
 1,035,732
Net income attributable to InterDigital, Inc.
 
 
 10,966
 
 
 
 
 10,966
Net loss attributable to noncontrolling interest
 
 
 
 
 
 
 (1,190) (1,190)
Net change in unrealized gain (loss) on short-term investments
 
 
 
 376
 
 
 
 376
Dividends declared ($0.35 per share)
 
 102
 (12,255) 
 
 
 
 (12,153)
Exercise of common stock options90
 1
 3,930
 
 
 
 
 
 3,931
Issuance of common stock, net12
 
 (111) 
 
 
 
 
 (111)
Amortization of unearned compensation
 
 1,821
 
 
 
 
 
 1,821
Repurchase of common stock
 
 
 
 
 40
 (3,148) 
 (3,148)
BALANCE, JUNE 30, 201871,059
 $710
 $678,434
 $1,435,994
 $(3,903) 36,251
 $(1,081,660) $6,649
 1,036,224


        
Accumulated
Other
Comprehensive
 Income (Loss)
                
Accumulated
Other
Comprehensive
 Income (Loss)
        
Common Stock 
Additional
 Paid-In Capital
 Retained Earnings Treasury Stock 
Non-Controlling
Interest
 
Total
Shareholders'
Equity
Common Stock 
Additional
 Paid-In Capital
 Retained Earnings Treasury Stock 
Non-Controlling
Interest
 
Total
Shareholders'
Equity
Shares Amount Amount
Accumulated
Other
Comprehensive
 Income (Loss)
Amount Shares Amount Amount
Accumulated
Other
Comprehensive
 Income (Loss)
Amount 
BALANCE, DECEMBER 31, 201871,134
 $711
 $685,512
 $1,435,970
 $(2,471) 37,605
) $1,284
 $938,013
71,134
 $711
 $685,512
 $1,435,970
 $(2,471) 37,605
) $1,284
 $938,013
Net loss attributable to InterDigital, Inc.
 
 
 (2,803) 
 
 
 (2,803)
 
 
 (2,803) 
 
 
 (2,803)
Proceeds from and increases in noncontrolling interests
 
 
 
 
 
 
 12,834
 12,834

 
 
 
 
 
 
 12,834
 12,834
Net loss attributable to noncontrolling interest
 
 
 
 
 
 
 (1,411) (1,411)
 
 
 
 
 
 
 (1,411) (1,411)
Net change in unrealized gain (loss) on short-term investments
 
 
 
 1,045
 
 
 
 1,045

 
 
 
 1,045
 
 
 
 1,045
Dividends declared ($0.35 per share)
 
 103
 (11,283) 
 
 
 
 (11,180)
 
 103
 (11,283) 
 
 
 
 (11,180)
Exercise of common stock options
 
 2
 
 
 
 
 
 2

 
 2
 
 
 
 
 
 2
Issuance of common stock, net116
 1
 (4,098) 
 
 
 
 
 (4,097)116
 1
 (4,098) 
 
 
 
 
 (4,097)
Amortization of unearned compensation
 
 2,096
 
 
 
 
 
 2,096

 
 2,096
 
 
 
 
 
 2,096
Repurchase of common stock
 
 
 
 
 1,585
 (108,986) 
 (108,986)
 
 
 
 
 1,585
 (108,986) 
 (108,986)
BALANCE, MARCH 31, 201971,250
 $712
 $683,615
 $1,421,884
 $(1,426) 39,190
 $(1,291,979) $12,707
 $825,513
71,250
 $712
 $683,615
 $1,421,884
 $(1,426) 39,190
 $(1,291,979) $12,707
 $825,513
Net income attributable to InterDigital, Inc.
 
 
 7,743
 
 
 
 
 7,743
Net loss attributable to noncontrolling interest
 
 
 
 
 
 
 (1,365) (1,365)
Net change in unrealized gain (loss) on short-term investments
 
 
 
 1,076
 
 
 
 1,076
Dividends declared ($0.35 per share)
 
 104
 (10,999) 
 
 
 
 (10,895)
Issuance of common stock, net10
 
 (40) 
 
 
 
 
 (40)
Amortization of unearned compensation
 
 2,116
 
 
 
 
 
 2,116
Repurchase of common stock
 
 
 
 
 944
 (62,283) 
 (62,283)
Equity component of debt, net of tax
 
 56,917
 
 
 
 
 
 56,917
Net convertible note hedge transactions, net of tax
 
 (49,740) 
 
 
 
 
 (49,740)
Net warrant transactions
 
 43,416
 
 
 
 
 
 43,416
Deferred financing costs allocated to equity, net of tax
 
 (1,569) 
 
 
 
 
 (1,569)
Reacquisition of equity component of debt due to prepayment, net of tax
 
 (10,649) 
 
 
 
 
 (10,649)
BALANCE, JUNE 30, 201971,260
 $712
 $724,170
 $1,418,628
 $(350) 40,134
 $(1,354,262) $11,342
 $800,240
         
Accumulated
Other
Comprehensive
 Income (Loss)
        
 Common Stock 
Additional
 Paid-In Capital
 Retained Earnings  Treasury Stock 
Non-Controlling
Interest
 
Total
Shareholders'
Equity
 Shares Amount     Shares Amount 
BALANCE, DECEMBER 31, 201971,268
 $712
 $727,402
 $1,412,779
 $(74) 40,567
 $(1,379,262) $24,724
 $786,281
Net income attributable to InterDigital, Inc.
 
 
 116
 
 
 
 
 116
Proceeds from and increases in noncontrolling interests
 
 
 

 
 
 
 

 
Net loss attributable to noncontrolling interest
 
 
 
 
 
 
 (1,777) (1,777)
Net change in unrealized gain (loss) on short-term investments
 
 
 
 32
 
 
 
 32
Dividends declared ($0.35 per share)
 
 84
 (10,847) 
 
 
 
 (10,763)
Exercise of common stock options27
 1
 777
 
 
 
 
 
 778
Issuance of common stock, net27
 
 (725) 
 
 
 
 
 (725)
Amortization of unearned compensation
 
 2,003
 
 
 
 
 
 2,003
Repurchase of common stock
 
 
 
 
 6
 (349) 
 (349)
BALANCE, MARCH 31, 202071,322
 $713
 $729,541
 $1,402,048
 $(42) 40,573
 $(1,379,611) $22,947
 $775,596


The accompanying notes are an integral part of these statements.


INTERDIGITAL, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(unaudited)
FOR THE SIX MONTHS ENDED JUNE 30,FOR THE THREE MONTHS ENDED MARCH 31,
2019 20182020 2019
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net income$2,164

$38,505
Adjustments to reconcile net income to net cash used in operating activities:   
Net income (loss)$(1,661)
$(4,214)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:   
Depreciation and amortization37,642
 29,338
19,160
 18,514
Non-cash interest expense, net8,563
 6,821
4,637
 4,082
Non-cash change in fair-value710
 
(5,501) 710
Gain on asset acquisition(14,175) 
Change in deferred revenue(62,754) (27,167)(39,512) (43,423)
Loss on extinguishment of debt5,488
 
Deferred income taxes(5,714) (9,367)(751) (2,801)
Share-based compensation4,212
 2,637
2,003
 2,096
Other623
 29
1,108
 624
(Increase) decrease in assets:      
Receivables(22,169) (16,473)2,664
 1,725
Deferred charges and other assets(6,463) (6,793)(1,658) 642
Increase (decrease) in liabilities:   
  
Accounts payable(3,105) (2,858)(2,477) 6,169
Accrued compensation and other expenses2,326
 (2,905)(5,071) (13,404)
Accrued taxes payable and other tax contingencies(871) (5,535)174
 (1,501)
Net cash provided by (used in) operating activities(53,523)
6,232
Net cash used in operating activities(26,885)
(30,781)
CASH FLOWS FROM INVESTING ACTIVITIES:      
Purchases of short-term investments(92,074) (101,159)(110,378) (707)
Sales of short-term investments267,289
 248,190
23,701
 183,809
Purchases of property and equipment(2,862)
(1,542)(1,603)
(1,584)
Capitalized patent costs(17,840) (14,507)(6,256) (8,481)
Acquisition of patents
 (2,250)
Long-term investments
 (6,250)
Net cash provided by investing activities154,513
 122,482
Net cash provided by (used in) investing activities(94,536) 173,037
CASH FLOWS FROM FINANCING ACTIVITIES:      
Net proceeds from exercise of stock options2
 3,930
778
 2
Payments on long-term debt(221,091) 
(94,909) 
Proceeds from issuance of convertible senior notes400,000
 
Purchase of convertible bond hedge(72,000) 
Payment for warrant unwind(4,184) 
Prepayment penalty on long-term debt(10,763) 
Proceeds from hedge unwind9,038
 
Proceeds from issuance of warrants47,600
 
Payments of debt issuance costs(7,300) 
Proceeds from non-controlling interests10,333
 

 10,333
Dividends paid(22,789)
(24,319)(10,747)
(11,629)
Taxes withheld upon restricted stock unit vestings(4,137) (8,388)(725) (4,097)
Repurchase of common stock(171,269) (9,172)(349) (108,986)
Net cash used in financing activities(46,560) (37,949)(105,952) (114,377)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH54,430
 90,765
(227,373) 27,879
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD488,733
 433,014
757,098
 488,733
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD$543,163
 $523,779
$529,725
 $516,612
                                   
Refer to Note 1, "Basis of Presentation," for additional supplemental cash flow information. Additionally, refer to Note 2, "Leases" for information regarding the impact of our adoption of the new leases accounting standard, ASC 842, and Note 8,7, "Cash, Concentration of Credit Risk and Fair Value of Financial Instruments" for a reconciliation of cash, cash equivalents and restricted cash to the condensed consolidated balance sheets.
The accompanying notes are an integral part of these statements.

INTERDIGITAL, INC. AND SUBSIDIARIES
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
June 30, 2019March 31, 2020
(unaudited)
1. BASIS OF PRESENTATION
In the opinion of management, the accompanying unaudited, condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the financial position of InterDigital, Inc. (individually and/or collectively with its subsidiaries referred to as “InterDigital,” the “Company,” “we,” “us” or “our,” unless otherwise indicated) as of June 30, 2019,March 31, 2020, and the results of our operations for the three and six months ended June 30,March 31, 2020 and 2019 and 2018 and our cash flows for the sixthree months ended June 30, 2019,March 31, 2020 and 2018.2019. The accompanying unaudited, condensed consolidated financial statements have been prepared in accordance with the instructions for Form 10-Q and, accordingly, do not include all of the detailed schedules, information and notes necessary to state fairly the financial condition, results of operations and cash flows in conformity with United States generally accepted accounting principles (“GAAP”). The year-end condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by GAAP for year-end financial statements. Therefore, these financial statements should be read in conjunction with the financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 20182019 (our “2018“2019 Form 10-K”) as filed with the Securities and Exchange Commission (“SEC”) on February 21, 2019.20, 2020. Definitions of capitalized terms not defined herein appear within our 20182019 Form 10-K. The results of operations for interim periods are not necessarily indicative of the results to be expected for the entire year. We have one1 reportable segment.
The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
InterDigital has analyzed the impact of the Coronavirus pandemic ("COVID-19") on its financial statements as of March 31, 2020.  InterDigital has determined that the changes to its significant judgments and estimates did not have a material impact on its financial statements.  The potential impact of COVID-19 will continue to be analyzed going forward.
Change in Accounting Policies
There have been no material changes or updates to our existing accounting policies from the disclosures included in our 20182019 Form 10-K, except as indicated in Note 2, "Leases".10-K.
Reclassifications
Certain reclassifications have been made to prior year amounts to conform to the current year presentation.
Prior Periods Financial Statement Revision
In connection with the preparation of the condensed consolidated financial statements for first quarter 2019, it was identified that we incorrectly attributed tax benefit to the net loss attributable to noncontrolling interest in our presentation of noncontrolling interest.
We assessed the materiality of this misstatement on prior periods’ financial statements in accordance with ASC Topic 250, Accounting Changes and Error Corrections, (“ASC 250”) and concluded it was not material to any prior annual or interim periods. In accordance with ASC 250, we have corrected our presentation of noncontrolling interest for all prior periods presented in this Form 10-Q by revising the condensed consolidated financial statements and other consolidated financial information included herein. We will continue to present the prior periods on this revised basis to the extent we present such prior periods in future filings. Refer to Note 12, "Revision to Noncontrolling Interest" for additional information on the revision.
Supplemental Cash Flow Information
The following table presents additional supplemental cash flow information for the sixthree months ended June 30,March 31, 2020 and 2019 and 2018:(in thousands):
 FOR THE THREE MONTHS ENDED MARCH 31,
SUPPLEMENTAL CASH FLOW INFORMATION:2020 2019
Interest paid$712
 $2,370
Income taxes paid, including foreign withholding taxes2,228
 3,196
Non-cash investing and financing activities:   
Dividend payable10,762
 11,195
Increases in noncontrolling interests
 2,500
Accrued capitalized patent costs and property and equipment(1,288) (1,056)

 FOR THE SIX MONTHS ENDED JUNE 30,
SUPPLEMENTAL CASH FLOW INFORMATION:2019 2018
Interest paid3,218
 2,370
Income taxes paid, including foreign withholding taxes9,770
 10,799
Non-cash investing and financing activities:   
Dividend payable10,895
 12,193
Increases in noncontrolling interests2,500
 
Accrued debt issuance costs(1,075) 
Accrued capitalized patent costs, acquisition of patents and property and equipment(1,910) (1,991)

New Accounting Guidance
Accounting Standards Update: LeasesFinancial Instruments - Credit Losses
In FebruaryJune 2016, the FASB issued ASU 2016-02,No. 2016-13, "Leases (Topic 842)Financial Instruments - Credit Losses" or ("ASC 842"), which outlines.  This ASU introduces a comprehensive changenew accounting model for recognizing credit losses on certain financial instruments and financial assets, including trade receivables, based upon an estimate of current expected credit losses, otherwise known as CECL. The new guidance requires

the recognition of an allowance that reflects the current estimate of credit losses expected to be incurred over the life of the financial asset, based not only on historical experience and current conditions, but also on reasonable forecasts. Additionally, ASU No. 2016-13 made several changes to the lease accounting model and supersedes prior lease guidance. Refer to Note 2, "Leases," for information regarding our adoption of this guidance effective January 1, 2019 and a discussion of the impact to information presented herein, as well as additional required disclosures under the new guidance.
Accounting Standards Update: Improvements to Nonemployee Share-Based Payment Accounting
In June 2018, the FASB issued ASU No. 2018-07, "Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting," which is intended to reduce cost and complexity and to improve financial reporting for share-based payments issued to nonemployees.available-for-sale impairment model. The guidance is effective for fiscal years beginning after December 15, 20182019, including interim periods within those fiscal years, and early adoption is permitted. We adopted this guidance in first quarter 2019as of January 1, 2020 and itthe adoption did not have a material impact on our consolidated financial statements.
Accounting Standards Update: Cloud Computing Arrangements
In August 2018, the FASB issued ASU No. 2018-15 “Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract”. The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The guidance is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. We are in the processadopted this guidance January as of determining the effect1, 2020 and the adoption willdid not have a material impact on our consolidated financial statements.
Accounting Standards Update: Collaborative Arrangements
In November 2018, the FASB issued ASU No. 2018-18, "Collaborative Arrangements (Topic 808): Clarifying the Interaction Between Topic 808 and Topic 606".  The amendments in this ASU provide guidance on how to assess whether certain transactions between collaborative arrangement participants should be accounted for within the revenue recognition standard. The amendments in this update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted for entities who have previously adopted the new revenue recognition guidance. We are in the process of determining the effect the adoption will have on our consolidated financial statements.
2.LEASES
In February 2016, the FASB issued ASC 842, which outlines a comprehensive change to the lease accounting model and supersedes prior lease guidance ("ASC 840"). The new guidance requires lessees to recognize lease liabilities and corresponding right-of-use assets for all leases with lease terms of greater than 12 months, and also changes the definition of a lease and expands the disclosure requirements of lease arrangements.
The Company adopted this guidance onas of January 1, 2019 using2020 and the modified retrospective transition effective date method. As part of that adoption, we have elected the package of three practical expedients, which includes the following: an entity may elect not to reassess whether expired or existing contracts contain a lease under the revised definition of a lease; an entity may elect not to reassess the lease classification for expired or existing leases; and an entity may elect not to reassess whether previously capitalized initial direct costs would qualify for capitalization. The Company has elected not to utilize the hindsight expedient in determining the lease term, and to not record leases with an initial term of 12 months or less on our balance sheet. Additionally, the Company has elected to account for lease components and non-lease components as a single lease component for all asset classes. Lease expense is recognized over the expected term on a straight-line basis. The

adoption did not have a material impact on our consolidated financial statements.
Accounting Standards Update: Simplifying the Company's condensed consolidated statements ofAccounting for Income Taxes
In December 2019, the FASB issued ASU No. 2019-12, "Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes" ("ASU 2019-12"). The amendments in this ASU are intended to simplify various aspects related to accounting for income or cash flows.
taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020 with early adoption allowed. The Company enters into operating leases primarily for real estate to support research and development ("R&D") sites and general office space in North America, with additional locations in Europe and Asia. The Company does notis currently have any finance leases. Certainevaluating the impact of our leases include options to extend the lease at our discretion at the end of the lease term, or terminate the lease early subject to certain conditions and penalties. We do not include any renewal options in our lease terms for calculating our lease liabilities, as the renewal options allow us to maintain operational flexibility and we are not reasonably certain we will exercise these options.
At the inception of an arrangement, the Company determines whether the arrangement is or contains a lease based on the specific facts and circumstances present. Operating lease liabilities and their corresponding right-of-use assets are recorded based on the present value of lease payments over the expected lease term. The interest rate implicit in lease contracts is typically not readily determinable, and, as such, the Company utilizes its incremental borrowing rate as the discount rate based on information available on the lease commencement date. Our incremental borrowing rate represents the rate we would incur to borrow on a collateralized basis over a similar term for an amount equal to the lease payments in a similar economic environment. We utilized the incremental borrowing rate as of January 1, 2019, our adoption date, for operating leases that commenced prior to that date. Upon our adoption of ASU 2016-02, the Company recorded the following operating lease right-of-use assets and operating lease liabilities as of January 1, 2019. Additionally, the table below includes the balances of operating lease right-of-use assets and operating lease liabilities as of June 30, 2019 (in thousands):
 Balance Sheet Classification January 1, 2019 June 30, 2019
Assets     
  Operating lease right-of-use assets, netOther Non-current Assets $13,634
 $17,530
Total Lease Assets  $13,634
 $17,530
      
Liabilities     
  Operating lease liabilities - CurrentOther Accrued Expenses $3,519
 $3,963
  Operating lease liabilities - NoncurrentOther Long-Term Liabilities 13,652
 16,920
Total Lease Liabilities  $17,171
 $20,883
The components of lease costs which were included within operating expenses in our condensed2019-12 on its consolidated statements of income were as follows (in thousands):

 Three months ended June 30, Six months ended June 30,
 2019 2019
Operating lease cost$1,105
 $2,115
Short-term lease cost310
 520
Variable lease cost381
 692
For the three and six months ended June 30, 2019, sublease income was insignificant. Cash paid for amounts included in the measurement of operating lease liabilities for the three and six months ended June 30, 2019 was $1.3 million and $2.4 million, respectively, and was included in net cash used in operating activities in our condensed consolidated statements of cash flows. Operating lease right-of-use assets obtained in exchange for operating lease obligations totaled $5.5 million during the three and six months ended June 30, 2019. As of June 30, 2019, the weighted average remaining operating lease term was 5.7 years and the weighted average discount rate used to determine the operating lease liabilities was 6.2%. The maturities of our operating lease liabilities as of June 30, 2019 under ASC 842, excluding short-term leases with terms less than 12 months, were as follows (in thousands): 

Maturity of Operating Lease LiabilitiesJune 30, 2019
Remainder 2019$2,803
20204,498
20213,989
20224,021
20233,285
Thereafter6,384
Total lease payments$24,980
Less: Imputed interest(4,097)
Present value of lease liabilities$20,883

The undiscounted maturities of our operating leases as of December 31, 2018 under ASC 840, including short-term leases with terms less than 12 months, were as follows (in thousands):
Maturity of Operating LeasesDecember 31, 2018
2019$5,362
20203,386
20212,883
20222,920
20232,184
Thereafter5,582


financial statements.
3.2. REVENUE
Disaggregated Revenue
The following table presents the disaggregation of our revenue for the three and six months ended June 30,March 31, 2020 and 2019 and 2018 (in thousands):

 Three months ended March 31,    
 2020 2019  Increase/(Decrease)
Variable patent royalty revenue$5,946
 $9,280
 $(3,334) (36)%
Fixed-fee royalty revenue66,347
 62,873
 3,474
 6 %
Current patent royalties a
72,293
 72,153
 140
  %
Non-current patent royalties b
705
 (5,775) 6,480
 112 %
Total patent royalties72,998
 66,378
 6,620
 10 %
Current technology solutions revenue a
3,212
 2,028
 1,184
 58 %
Patent sales b

 225
 (225)  %
Total revenue$76,210
 $68,631
 $7,579
 11 %
 Three months ended June 30,    
 2019 2018  Increase/(Decrease)
Variable patent royalty revenue$8,594
 $6,594
 $2,000
 30 %
Fixed-fee royalty revenue63,736
 60,264
 3,472
 6 %
Current patent royalties a
72,330
 66,858
 5,472
 8 %
Non-current patent royalties b
1,237
 2,017
 (780) (39)%
Total patent royalties73,567
 68,875
 4,692
 7 %
Current technology solutions revenue a
2,042
 680
 1,362
 200 %
Total revenue$75,609
 $69,555
 $6,054
 9 %
 Six months ended June 30,    
 2019 2018  Increase/(Decrease)
Variable patent royalty revenue$17,874
 $12,677
 $5,197
 41 %
Fixed-fee royalty revenue126,609
 117,935
 8,674
 7 %
Current patent royalties a
144,483
 130,612
 13,871
 11 %
Non-current patent royalties b
(4,538) 25,361
 (29,899) (118)%
Total patent royalties139,945
 155,973
 (16,028) (10)%
Current technology solutions revenue a
4,070
 1,026
 3,044
 297 %
Patent sales b
225
 
 225
  %
Total revenue$144,240
 $156,999
 $(12,759) (8)%

a.Recurring revenues are comprised of current patent royalties, inclusive of Dynamic Fixed-Fee Agreement royalties, and current technology solutions revenue.
b.Non-recurring revenues are comprised of non-current patent royalties, which primarily include past patent royalties and royalties from static agreements, as well as patent sales.

    During first half 2019,quarter 2020, we recognized $79.9$55.2 million of revenue that had been included in deferred revenue as of the beginning of the period. As of June 30,March 31, 2020, we had contract assets of $12.5 million and $9.5 million included within "Accounts receivable" and "Other non-current assets" in the condensed consolidated balance sheet, respectively. As of December 31, 2019, we had contract assets of $49.7$16.2 million and $1.3$10.2 million included within accounts"Accounts receivable" and other"Other non-current assets" in the condensed consolidated balance sheet, respectively. As of December 31, 2018, we had contract assets of $19.7 million and $5.5 million included within accounts receivable and other non-current assets, respectively.
Contracted Revenue
Based on contracts signed and committed as of June 30, 2019,March 31, 2020, we expect to recognize the following revenue from Dynamic Fixed-Fee Agreement payments over the term of such contracts (in thousands):
RevenueRevenue
Remainder 2019$128,221
2020248,250
Remainder 2020$194,989
2021178,583
191,401
202285,228
86,728
2023

2024

4.3. INCOME TAXES
In first half 2019,quarter 2020, based on the statutory federal tax rate net of discrete federal and state taxes, we had an effective tax rate of 59.5%1,144.7%. The effective tax rate for the first half 2019 ratequarter 2020 was impacted by losses in certain jurisdictions where the Company presently has recorded a valuation allowance against the related tax benefit. Excluding this valuation allowance, our first half 2019quarter 2020 effective tax rate would have been 20.4%65.51%. In first half 2019, the Company recorded a net discrete tax expense of $3.4 million related to both the acquisition of the Research & Innovation ("R&I") unit of Technicolor SA and the extinguishment of long-term debt recognized during second quarter 2019. Refer to Note 7, "Business Combinations and Other Transactions" and Note 9, "Long-

Term Debt" for further discussion of these transactions. This is compared to an effective tax rate benefit of 11.1%29.9% based on the statutory federal tax rate net of discrete federal and state taxes during first half 2018.quarter 2019. During first half 2018,quarter 2019, we recorded discrete net benefits of $3.7$0.5 million primarily related to excessshare-based compensation. The Company believes that outcomes which are reasonably possible within the next 12 months may result in the reduction in the liability for unrecognized tax benefits in connection with share-based compensationof $1.8 million, excluding interest and our sale of a commercial initiative.  Excluding these discrete benefits,penalties.
On March 27, 2020, the effective tax rate would have been a benefit of 0.6%.Coronavirus Aid, Relief and Economic Security Act (the "CARES Act") was signed into law. We are currently evaluating its impact, if any, on us.
On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the "Tax Reform Act") was signed into law. The Tax Reform Act imposes a 13.125% tax rate on income that qualifies as Foreign Derived Intangible Income ("FDII"). The reduction in benefit is primarily related to the differences in our FDII deduction between the periods. The difference in the FDII deduction between the periods was driven by the timing of income between book and tax mostly related to revenue recognition. On March 6, 2019, the IRS issued proposed regulations for FDII. The Company is currently evaluating the impact of the proposedwaiting for final regulations and will record the impact, if any, as applicable.
The effective tax rate reported in any given year will continue to be influenced by a variety of factors, including timing differences between the recognition of book and tax revenue, the level of pre-tax income or loss, the foreign vs. domestic classification of the Company’s customers, and any discrete items that may occur. The Company further notes that its tax positions could be altered by pending IRS regulations that could clarify certain provisions of the Tax Reform Act.
During first halfquarter 2020 and 2019, and 2018, we paid approximately $5.1$2.0 million and $9.5$3.1 million, respectively, of foreign source withholding tax. Additionally, as of June 30, 2019March 31, 2020 and December 31, 2018,2019, we included approximately $0.6$0.2 million and $1.5$0.1 million, respectively, of foreign source withholding tax within our taxes payable and deferred tax asset balances. These amounts are related to receivables from foreign licensees.
5.4. NET INCOME (LOSS) PER SHARE
Basic Earnings Per Share ("EPS") is calculated by dividing net income or loss available to common shareholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if options or other securities with features that could result in the issuance of common stock were exercised or converted to common stock. The following tables reconcile the numerator and the denominator of the basic and diluted net income (loss) per share computation (in thousands, except for per share data):

Three months ended June 30,Three months ended March 31,
2019 20182020 2019
Basic Diluted Basic DilutedBasic Diluted Basic Diluted
Numerator:              
Net income applicable to InterDigital, Inc.$7,743
 $7,743
 $10,966
 $10,966
Net income (loss) applicable to InterDigital, Inc.$116
 $116
 $(2,803) $(2,803)
Denominator:              
Weighted-average shares outstanding: Basic31,547
 31,547
 34,769
 34,769
30,722
 30,722
 32,611
 32,611
Dilutive effect of stock options, RSUs, convertible securities and warrants  229
   862
  198
   
Weighted-average shares outstanding: Diluted  31,776
   35,631
  30,920
   32,611
Earnings Per Share:              
Net income per common share: Basic$0.25
 $0.25
 $0.32
 $0.32
Net income (loss) per common share: Basic$
 $
 $(0.09) $(0.09)
Dilutive effect of stock options, RSUs, convertible securities and warrants  (0.01)   (0.01)  
   
Net income per common share: Diluted  $0.24
   $0.31
Net income (loss) per common share: Diluted  $
   $(0.09)


 Six months ended June 30,
 2019 2018
 Basic Diluted Basic Diluted
Numerator:       
Net income applicable to InterDigital, Inc.$4,940
 $4,940
 $41,196
 $41,196
Denominator:       
Weighted-average shares outstanding: Basic32,076
 32,076
 34,705
 34,705
Dilutive effect of stock options, RSUs, convertible securities and warrants  290
   914
Weighted-average shares outstanding: Diluted  32,366
   35,619
Earnings Per Share:       
Net income per common share: Basic$0.15
 $0.15
 $1.19
 $1.19
Dilutive effect of stock options, RSUs, convertible securities and warrants  
   (0.03)
Net income per common share: Diluted  $0.15
   $1.16

Shares of common stock issuable upon the exercise or conversion of certain securities have been excluded from our computation of EPS because the strike price or conversion rate, as applicable, of such securities was greater than the average market price of our common stock and, as a result, the effect of such exercise or conversion would have been anti-dilutive. Set forth below are the securities and the weighted average number of shares of common stock underlying such securities that were excluded from our computation of EPS for the periods presented (in thousands).
Three months ended June 30, Six months ended June 30,Three months ended March 31,
2019 2018 2019 20182020 2019
Restricted stock units and stock options153
 26
 102
 25
260
 402
Convertible securities4,986
 
 4,715
 
6,268
 4,440
Warrants4,986
 4,405
 4,715
 4,404
6,268
 4,440
Total10,125
 4,431
 9,532
 4,429
12,796
 9,282

Convertible Notes and Warrants
Refer to Note 9,8, "Long-Term Debt," for information about the Company's convertible notes and warrants and related conversion and strike prices. During periods in which the average market price of the Company's common stock is above the applicable conversion price of the Company's convertible notes, or above the strike price of our outstanding warrants, the impact of conversion or exercise, as applicable, would be dilutive and such dilutive effect is reflected in diluted EPS. As a result, in periods where the average market price of the Company's common stock is above the conversion price or strike price, as applicable, under the treasury stock method, the Company calculates the number of shares issuable under the terms of the convertible notes and the warrants based on the average market price of the stock during the period, and includes that number in the total diluted shares outstanding for the period.
6.5. LITIGATION AND LEGAL PROCEEDINGS
ARBITRATIONS AND COURT PROCEEDINGS (OTHER THAN DELAWARE DISTRICT COURT ACTIONS RELATED TO USITC PROCEEDINGS)
Asustek ActionsHuawei
On April 15, 2015, Asustek Computer Incorporated (“Asus”) filed a complaint in28, 2020, the U.S. District Court for the Northern DistrictCompany announced that it and certain of California (the “CA Northern District Court”) against InterDigital, Inc., and its subsidiaries InterDigital Communications, Inc., InterDigital Technology Corporation, IPR Licensing, Inc., and InterDigital Patent Holdings, Inc. The complaint asserted the following causes of action: violation of Section Two of the Sherman Act, violation of Section 17200 of the California Business and Professions Code, breach of contract resulting from ongoing negotiations, breach of contract leading to and resulting in the parties’ April 2008had entered into a multi-year, worldwide, non-exclusive, fixed-fee patent license agreement (the “2008 Asus PLA”"Huawei PLA") with Huawei Investment & Holding Co., promissory estoppel, waiver, and fraudulent inducement to contract. Among other allegations, Asus alleged that InterDigital breached its commitment to be prepared to grant licenses to its standards-essential patents on fair, reasonable and non-discriminatory

(“FRAND”) terms and conditions. As relief, Asus sought a judgment that the 2008 Asus PLA is void or unenforceable, damages in the amount of excess royalties Asus paid under the 2008 Asus PLA plus interest, a judgment setting the proper FRAND terms and conditions for InterDigital’s patent portfolio, an order requiring InterDigital to grant Asus a license on FRAND terms and conditions, and punitive damages and other relief.
Ltd. In response, on May 30, 2015, InterDigital filed an Arbitration Demandconnection with the ICDR. InterDigital claimed that Asus breached the 2008 Asus PLA’s dispute resolution provision by filing its CA Northern District Court lawsuit and sought declaratory relief that it is not liable for any of the claims in Asus’s complaint. On June 2, 2015, InterDigital filed in the CA Northern District Court a motion to compel arbitration on each of Asus’s claims. On August 25, 2015, the court granted InterDigital’s motion for all of Asus’s claims except its claim for breach of contract resulting from ongoing negotiations. Aside from this claim, the court ruled that the issue of arbitrability should be decided by an arbitrator, and stayed the proceedings pending that determination.
Asus asserted counterclaims in the arbitration that mirrored its CA Northern District Court claims, except that it did not assert the breach of contract claim that the court determined was not arbitrable and it added a claim of violation of the Delaware Consumer Fraud Act. Asus also contended that its counterclaims were not arbitrable. InterDigital added a claim for breach of the 2008 Asus PLA’s confidentiality provision.
On July 14, 2016, Asus filed a motion to lift the stay in the CA Northern District Court proceeding along with a notice of the arbitral tribunal’s decision on arbitrability, informing the court of the arbitrators’ decision that, other than InterDigital’s breach of contract claims and Asus’s fraudulent inducement claim, no other claim or counterclaim was arbitrable. Asus then filed in the CA Northern District Court an amended complaint on August 18, 2016. This amended complaint included all of the claims in Asus’s first CA Northern District Court complaint except fraudulent inducement and added a claim of violation of the Delaware Consumer Fraud Act. It sought the same relief as its first CA Northern District Court complaint, but also sought a ruling that each of InterDigital’s patents “declared [to standards-setting organizations] to be essential or potentially essential” be unenforceable and any contracts InterDigital entered into in furtherance of its unlawful conduct be void. On September 8, 2016, InterDigital filed its answer and counterclaims to Asus’s amended complaint. It denied Asus’s claims and filed a counterclaim for declaratory judgment that Asus’s tort claims were invalid or preempted as applied under the First Amendment to the U.S. Constitution, the Patent Clause of the U.S. Constitution, and Title 35 of the U.S. Code. On September 28, 2016, Asus answered and denied InterDigital’s counterclaims.
With respect to its arbitration counterclaim for fraudulent inducement, Asus stated in its pleadings that it was seeking return of excess royalties (which totaled close to $63 million as of the August 2016 date referenced in the pleadings and had increased with additional royalty payments made by Asus since such time), plus interest, costs and attorneys’ fees. The evidentiary hearing in the arbitration was held in January 2017, andHuawei PLA, the parties presented oral closing arguments on March 22, 2017. On August 2, 2017, the arbitral tribunal issued its Final Award. The tribunal fully rejected Asus’s counterclaim, finding that InterDigital did not fraudulently induce Asus to enter into the 2008 Asus PLA. Accordingly, the tribunal dismissed Asus’s fraudulent inducement counterclaim in its entirety. The tribunal also dismissed InterDigital’s claims that Asus breached the confidentiality provisions and the dispute resolution provisions of the 2008 Asus PLA. On October 20, 2017, InterDigital and Asus jointly moved to confirm both the tribunal’s Final Award and the Interim Award on Jurisdiction in the CA Northern District. The court confirmed both awards on October 25, 2017.
On April 16, 2018, InterDigital filed a motion in the CA Northern District Court proceeding for leave to amend its counterclaims to include a claim of intentional interference with contract. On June 12, 2018, the court denied this motion.
On April 17, 2018, the parties served opening expert reports in the CA Northern District Court proceeding. Asus’s damages expert contended that Asus was owed damages in the amount of $75.9 million based on its claims that InterDigital charged royalties inconsistent with its FRAND commitments. Those damages, which represented a substantial portion of the royalties paid by Asus through third quarter 2017, did not reflect Asus’s most recent royalty payments. Asus also sought interest, costs and attorneys’ fees, as well as, in connection with its Sherman Act claim, treble damages.
On August 16, 2018, the parties filed motions for summary judgment in the CA Northern District Court proceeding. The parties filed oppositions on September 13, 2018 and replies on September 27, 2018, and the court held an oral argument on October 11, 2018.
On December 20, 2018, the CA Northern District Court issued an order on the parties’ motions for summary judgment. InterDigital’s motion was granted in part and denied in part, and Asus’s motion was denied in its entirety. The court: (1) granted summary judgment that Asus was judicially estopped from arguing that the 2008 Asus PLA is not FRAND compliant in light of Asus’s prior inconsistent positions; (2) denied to the extent ruled on by the court InterDigital’s motion that issue preclusion prevented Asus from re-litigating issues decided in the arbitration; (3) granted summary judgment that Asus could not invalidate the 2008 Asus PLA on the theory that, even if FRAND when signed, the 2008 Asus PLA became

non-FRAND thereafter; (4) denied InterDigital’s motion for summary judgment that Asus’s Sherman Act claim failed as a matter of law; and (5) granted summary judgment that Asus’s promissory estoppel and California UCL claims failed as a matter of law. In addition, the court denied Asus’s motion for summary judgment that, as a matter of law, InterDigital breached its contractual obligation to license its essential patents on FRAND terms and conditions by engaging in discriminatory licensing practices. As a result of the summary judgment order, Asus’ claims of breach of contract leading to and resulting in the 2008 Asus PLA, promissory estoppel, and California UCL claims were dismissed from the case. On December 21, 2018, the court referred the case to a magistrate judge for a settlement conference. The settlement conference was held on February 14, 2019, but a settlement was not reached at that time.

In light of the court's ruling that Asus was judicially estopped from arguing that the 2008 Asus PLA was not FRAND compliant, on March 11, 2019, Asus revised its damages calculations downward, and updated the calculations to include sales through 2018. Asus was seeking damages for what it called “4G capable products” in the amount of $58.3 million for sales through 2018. Any damages attributable to a violation of the Sherman Act would have been subject to mandatory trebling, as well as an award of reasonable attorneys’ fees.

On April 4, 2019, Asus informed the court that it would not be proceeding to trial on its waiver and Delaware Consumer Fraud Act claims. A jury trial on Asus’ remaining claims--violation of Section 2 of the Sherman Act and breach of contract resulting from ongoing negotiations--was scheduled to commence on May 6, 2019, in the CA Northern District Court.

On April 9, 2019, the parties participated in another court-mandated settlement conference. On April 12, 2019, certain subsidiaries of InterDigital entered into a Settlement Agreement and First Amendment to the Patent License Agreement with Asus (the “Asus Settlement Agreement”), pursuant to which, among other things, the parties agreed to a multi-year amendment to the 2008 Asus PLA that added coverageterms for 4G technologies and amended certain other terms. The parties also agreed to dismissdismissal of all outstanding litigation and other proceedings among the parties,them and their affiliates, including, without limitation, the actionactions in the CA Northern DistrictShenzhen Intermediate People’s Court (the "Shenzhen Court") and the High Court of Justice, Business and Property Courts of England and Wales, Intellectual Property List (Chancery Division), Patents Court (the "High Court") described herein. The terms and conditions of the Asus Settlement Agreement are confidential. The action in the CA Northern District Court was dismissed on April 15, 2019, and there are no further proceedings in this matter.below.
2019 Huawei
China Proceeding
On January 3, 2019, InterDigital was notifiedInformation regarding the legal proceeding that a civil complaint was filed on January 2, 2019, by Huawei Technologies Co., Ltd. and certain of its subsidiaries filed against InterDigital,the Company and certain of its subsidiaries in the Shenzhen Court can be found in the description of legal proceedings contained in the Company's 2019 Form 10-K. On March 5, 2020, the Company filed a petition for a hearing with the IP Tribunal of the China Supreme People's Court regarding the Company's appeal of the Shenzhen Court's decision to deny its jurisdictional challenge.
U.K. Proceeding
Information regarding the legal proceeding that the Company and certain of its subsidiaries filed against Huawei Technologies Co., Ltd. and Huawei Technologies (UK) Co., Ltd. in the High Court can be found in the description of legal proceedings contained in the Company's 2019 Form 10-K.
Lenovo
U.K. Proceeding
Information regarding the legal proceeding that the Company and certain of its subsidiaries filed against Lenovo Group Limited and certain of its subsidiaries in the High Court can be found in the description of legal proceedings contained in the Company's 2019 Form 10-K. On February 28, 2020, the Company filed its response to Lenovo's defense and counterclaim, and on March 23, 2020, Lenovo filed itsdraftreply.
District of Delaware Patent Proceeding
Information regarding the legal proceeding that the Company and certain of its subsidiaries filed against Lenovo Holding Company, Inc. and certain of its subsidiaries in the Shenzhen Intermediate People’s Court.United States District Court for the District of Delaware (the "Delaware District Court") can be found in the description of legal proceedings contained in the Company's 2019 Form 10-K. On February 21, 2020, Lenovo filed a reply in support of its renewed motion to dismiss. The decision regarding Lenovo's renewed motion to dismiss remains pending.
District of Delaware Antitrust Proceeding
On April 9, 2020, Lenovo (United States) Inc. ("Lenovo") and Motorola Mobility LLC filed a complaint in the Delaware District Court against the Company and certain of its subsidiaries. The complaint seeks a rulingalleges that the InterDigitalCompany defendants have violated an obligationSections 1 and 2 of the Sherman Act in connection with, among other things, their licensing of 3G and 4G standards essential patents ("SEPs"). The complaint further alleges that the Company defendants have violated their commitment to license their patents that are essentialthe European Telecommunications Standards Institute ("ETSI") with respect to the licensing of 3G and 4G SEPs on fair, reasonable and 5G wireless telecommunication standards on FRANDnon-discriminatory ("FRAND") terms and conditions. The complaint also seeks, a determinationamong other things (i) rulings that the Company defendants have violated Sections 1 and 2 of the Sherman Act and are liable for breach of their ETSI FRAND commitments, (ii) a judgment that the plaintiffs are entitled to a license with respect to the Company's 3G and 4G SEPs on FRAND terms and conditions, and (iii) injunctions against any demand for licensing allallegedly excessive royalties or enforcement of the InterDigital defendants’ Chinese patents that are essential toCompany defendants' 3G and 4G and 5G wireless telecommunication standardsU.S. SEPs against the plaintiffs or their customers via patent infringement proceedings. The Company's response to the Huawei plaintiffs for the plaintiffs’ wireless terminal unit products made and/or sold in China from 2019 to 2023. InterDigital’s patent license agreement with Huawei expired on December 31, 2018.complaint is due by June 22, 2020.
REGULATORY PROCEEDING
Investigation by National Development and Reform Commission of China (now State Administration for Market Regulation)
On September 23, 2013, counsel for InterDigital was informedInformation regarding the Company's ongoing licensing commitments to Chinese manufacturers of cellular terminal units resulting from the now-suspended investigation initiated by China’s National Development and Reform Commission (“NDRC”) that the NDRC had initiated a formal investigation into whether InterDigital has violated China’s Anti-Monopoly Law (“AML”) with respect to practices related to the licensing of InterDigital’s standards-essential patents to Chinese companies. Companiescan be found to violate the AML may be subject to a cease and desist order, fines and disgorgement of any illegal gains. On March 3, 2014, the Company submitted to NDRC, pursuant to a procedure set out in the AML, a formal application for suspensiondescription of the investigation that included proposed commitments by the Company. On May 22, 2014, NDRC formally suspended its investigation of the Company based on the commitments proposed by the Company. The Company’s commitments with respect to the licensing of its patent portfolio for wireless mobile standards to Chinese manufacturers of cellular terminal units (“Chinese Manufacturers”) are as follows:
1.Whenever InterDigital engages with a Chinese Manufacturer to license InterDigital’s patent portfolio for 2G, 3G and 4G wireless mobile standards, InterDigital will offer such Chinese Manufacturer the option of taking a worldwide portfolio license of only its standards-essential wireless patents, and comply with F/RAND principles when negotiating and entering into such licensing agreements with Chinese Manufacturers.

2. As part of its licensing offer, InterDigital will not require that a Chinese Manufacturer agree to a royalty-free, reciprocal cross-license of such Chinese Manufacturer's similarly categorized standards-essential wireless patents.
3. Prior to commencing any action against a Chinese Manufacturer in which InterDigital may seek exclusionary or injunctive relief for the infringement of any of its wireless standards-essential patents, InterDigital will offer such Chinese Manufacturer the option to enter into expedited binding arbitration under fair and reasonable procedures to resolve the royalty rate and other terms of a worldwide license under InterDigital's wireless standards-essential patents.  If the Chinese Manufacturer accepts InterDigital's binding arbitration offer or otherwise enters into an agreement with InterDigital on a binding arbitration mechanism, InterDigital will, in accordance with the terms of the arbitration agreement and patent license agreement, refrain from seeking exclusionary or injunctive relief against such company.
The commitmentslegal proceedings contained in item 3 above expired on May 22, 2019. With the consolidation of China’s anti-monopoly enforcement authorities into the State Administration for Market Regulation (“SAMR”) in April 2018, SAMR is now responsible for overseeing InterDigital’s commitments.
USITC PROCEEDINGS AND RELATED DELAWARE DISTRICT COURT PROCEEDINGS
2013 USITC Proceeding (337-TA-868) and Related ZTE Delaware District Court Proceeding
USITC Proceeding (337-TA-868)
On January 2, 2013, the Company’s wholly owned subsidiaries InterDigital Communications, Inc., InterDigital Technology Corporation, IPR Licensing, Inc. and InterDigital Holdings, Inc. filed a complaint with the United States International Trade Commission (the “USITC” or “Commission”) against Samsung Electronics Co., Ltd., Samsung Electronics America, Inc. and Samsung Telecommunications America, LLC, Nokia Corporation and Nokia Inc., Huawei Technologies Co., Ltd., Huawei Device USA, Inc. and FutureWei Technologies, Inc. d/b/a Huawei Technologies (USA) and ZTE Corporation and ZTE (USA) Inc. (collectively, the “337-TA-868 Respondents”), alleging violations of Section 337 of the Tariff Act of 1930 in that they engaged in unfair trade practices by selling for importation into the United States, importing into the United States and/or selling after importation into the United States certain 3G and 4G wireless devices (including WCDMA-, cdma2000- and LTE-capable mobile phones, USB sticks, mobile hotspots, laptop computers and tablets and components of such devices) that infringe one or more of up to seven of InterDigital’s U.S. patents. The complaint also extended to certain WCDMA and cdma2000 devices incorporating Wi-Fi functionality. InterDigital’s complaint with the USITC sought an exclusion order that would bar from entry into the United States infringing 3G or 4G wireless devices (and components), including LTE devices, that are imported by or on behalf of the 337-TA-868 Respondents, and also sought a cease-and-desist order to bar further sales of infringing products that have already been imported into the United States. Certain of the asserted patents were also asserted against Nokia, Huawei and ZTE in earlier pending USITC proceedings (including the Nokia, Huawei and ZTE 2011 USITC Proceeding (337-TA-800) and the Nokia 2007 USITC Proceeding (337-TA-613), as set forth below) and therefore were not asserted against those 337-TA-868 Respondents in this investigation.
On December 23, 2013, InterDigital and Huawei reached a settlement agreement to enter into binding arbitration to resolve their global patent licensing disputes.  Pursuant to the settlement agreement, InterDigital and Huawei moved to dismiss all litigation matters pending between the parties except for the now-resolved action filed by Huawei in China to set a FRAND rate for the licensing of InterDigital’s Chinese standards-essential patents. As a result, effective February 12, 2014, the Huawei Respondents were terminated from the 337-TA-868 investigation.
From February 10 to February 20, 2014, ALJ Essex presided over the evidentiary hearing in this investigation. The patents in issue in this investigation as of the hearing were U.S. Patent Nos. 7,190,966 (the “’966 patent”) and 7,286,847 (the “’847 patent”) asserted against ZTE and Samsung, and U.S. Patent No. 7,941,151 (the “’151 patent”) asserted against ZTE, Samsung and Nokia.
On June 3, 2014, InterDigital and Samsung filed a joint motion to terminate the investigation as to Samsung on the basis of settlement. The ALJ granted the joint motion by initial determination issued on June 9, 2014, and the USITC determined not to review the initial determination on June 30, 2014.
On June 13, 2014, the ALJ issued an Initial Determination (“ID”) in the 337-TA-868 investigation. In the ID, the ALJ found that no violation of Section 337 had occurred in connection with the importation of 3G/4G devices by ZTE or Nokia, on the basis that the accused devices do not infringe asserted claims 1-6, 8-9, 16-21 or 23-24 of the ’151 patent, claims 1, 3, 6, 8, 9, or 11 of the ’966 patent, or claims 3 or 5 of the ’847 patent. The ALJ also found that claim 16 of the ’151 patent was invalid as indefinite. Among other determinations, the ALJ further determined that InterDigital did not violate any FRAND

obligations, a conclusion also reached by the ALJ in the 337-TA-800 investigation, and that Respondents have engaged in patent “hold out.”
On June 30, 2014, InterDigital filed a Petition for Review with the USITC seeking review and reversal of certain of the ALJ’s conclusions in the ID. On the same day, Respondents filed a Conditional Petition for Review urging alternative grounds for affirmance of the ID’s finding that Section 337 was not violated and a Conditional Petition for Review with respect to FRAND issues.
In June 2014, Microsoft Mobile Oy (“MMO”) was added as a respondent in the investigation.
On August 14, 2014, the Commission determined to review in part the June 13, 2014 ID but terminated the investigation with a finding of no violation.
On October 10, 2014, InterDigital filed a petition for review with the U.S. Court of Appeals for the Federal Circuit (the “Federal Circuit”), appealing certain of the adverse determinations in the Commission’s August 8, 2014 final determination including those related to the ’966 and ’847 patents. On June 2, 2015, InterDigital moved to voluntarily dismiss the Federal Circuit appeal, because, even if it were to prevail, it did not believe there would be sufficient time following the court’s decision and mandate for the USITC to complete its proceedings on remand such that the accused products would be excluded before the ’966 and ’847 patents expire in June 2016. The court granted the motion and dismissed the appeal on June 18, 2015.
Related Delaware District Court Proceeding
On January 2, 2013, the Company’s wholly owned subsidiaries InterDigital Communications, Inc., InterDigital Technology Corporation, IPR Licensing, Inc. and InterDigital Holdings, Inc. filed four related district court actions in the Delaware District Court against the 337-TA-868 Respondents. The proceedings against Huawei, Samsung and Nokia were subsequently dismissed, as discussed below. The remaining complaint alleges that ZTE infringes the same patents with respect to the same products alleged in the complaint filed by InterDigital in USITC Proceeding (337-TA-868). The complaint seeks a permanent injunction and compensatory damages in an amount to be determined, as well as enhanced damages based on willful infringement, and recovery of reasonable attorneys’ fees and costs.
On January 31, 2013, ZTE filed its answer and counterclaims to InterDigital’s Delaware District Court complaint; ZTE asserted counterclaims for breach of contract, equitable estoppel, waiver of right to enjoin and declarations that InterDigital has not offered ZTE licenses on FRAND terms, declarations seeking the determination of FRAND terms and declarations of noninfringement, invalidity and unenforceability. In addition to the declaratory relief specified in its counterclaims, ZTE seeks specific performance of InterDigital's purported contracts with ZTE and standards-setting organizations, appropriate damages in an amount to be determined at trial, reasonable attorneys’ fees and such other relief as the court may deem appropriate.    
On March 21, 2013, pursuant to stipulation, the Delaware District Court granted InterDigital leave to file an amended complaint against ZTE to assert allegations of infringement of the ’244 patent. On March 22, 2013, ZTE filed its answer and counterclaims to InterDigital’s amended Delaware District Court complaint. On April 9, 2013, InterDigital filed a motion to dismiss ZTE’s counterclaims relating to its FRAND allegations. On July 12, 2013, the Delaware District Court held a hearing on InterDigital’s motion to dismiss. By order issued the same day, the Delaware District Court granted InterDigital’s motion, dismissing ZTE's counterclaims for equitable estoppel and waiver of the right to injunction or exclusionary relief with prejudice. It further dismissed the counterclaims for breach of contract and declaratory relief related to InterDigital’s FRAND commitments with leave to amend.
On August 6, 2013, ZTE filed its answer and amended counterclaims for breach of contract and for declaratory judgment seeking determination of FRAND terms. The counterclaims also continue to seek declarations of noninfringement, invalidity, and unenforceability. On August 30, 2013, InterDigital filed a motion to dismiss the declaratory judgment counterclaim relating to the request for determination of FRAND terms. On May 28, 2014, the court granted InterDigital’s motion and dismissed ZTE's FRAND-related declaratory judgment counterclaim, ruling that such declaratory judgment would serve no useful purpose.
On December 30, 2013, InterDigital and Huawei filed a stipulation of dismissal on account of the confidential settlement agreement and agreement to arbitrate their disputes in this action. On the same day, the Delaware District Court granted the stipulation of dismissal and dismissed the action against Huawei.

On February 11, 2014, the Delaware District Court judge entered an InterDigital, Nokia, and ZTE stipulated Amended Scheduling Order that bifurcated issues relating to damages, FRAND-related affirmative defenses, and any FRAND-related counterclaims.
On August 28, 2014, the court granted in part a motion by InterDigital for summary judgment that the asserted ’151 patent is not unenforceable by reason of inequitable conduct, holding that only one of the references forming the basis of defendants’ allegations would remain in issue, and granted a motion by InterDigital for summary judgment that the asserted claims of the ’966 and ’847 patents are not invalid for lack of enablement.
On August 5, 2014, InterDigital and Samsung filed a stipulation of dismissal in light of the parties’ settlement agreement. On the same day, the court granted the stipulation of dismissal and dismissed the action against Samsung with prejudice.
By order dated August 28, 2014, MMO was joined in the case against Nokia as a defendant.
The ZTE trial addressing infringement and validity of the ’966, ’847, ’244 and ’151 patents was held from October 20 to October 27, 2014. During the trial, the judge determined that further construction of certain claim language of the ’151 patent was required, and the judge decided to hold another trial as to ZTE's infringement of the ’151 patent at a later date. On October 28, 2014, the jury returned a unanimous verdict in favor of InterDigital, finding that the ’966, ’847 and ’244 patents are all valid and infringed by ZTE 3G and 4G cellular devices. The court issued formal judgment to this effect on October 29, 2014.
On November 26, 2014, ZTE filed a motion for judgment as a matter of law that the asserted claims of the ’966, ’847 and ’244 patents are not infringed and, in the alternative, for a new trial. InterDigital filed an opposition on December 15, 2014, and ZTE filed a reply on January 7, 2015.
The ZTE trial addressing infringement of the ’151 patent was held from April 20 to April 22, 2015. On April 22, 2015, the jury returned a verdict in favor of ZTE, finding that the ’151 patent is not infringed by ZTE 3G and 4G cellular devices.
On May 29, 2015, the court entered a new scheduling order for damages and FRAND-related issues, scheduling the ZTE trial related to damages and FRAND-related issues for October 2016.
On September 14, 2015, a panel of Administrative Law Judges of the United States Patent and Trademark Office Patent Trial and Appeal Board (the “PTAB”) issued a final written decision in two Inter Partes Review (“IPR”) cases concerning the ’244 patent. These IPR proceedings were commenced on petitions filed by ZTE Corporation and ZTE (USA) Inc. and by Microsoft Corporation, respectively. Specifically, the panel determined that a number of claims of the ’244 patent are unpatentable as obvious. IPR Licensing, Inc. appealed to the Federal Circuit seeking review of the PTAB’s decision. Oral argument in the appeal was heard on April 7, 2017. On April 20, 2017, the Federal Circuit affirmed the PTAB’s decision that most of the challenged claims of the ’244 patent are unpatentable as obvious. However, the court vacated and remanded the PTAB’s obviousness finding as to claim 8, which returned the matter to the PTAB for further proceedings as to that claim. On July 28, 2017, IPR Licensing, Inc., filed a petition for a writ of certiorari with the U.S. Supreme Court seeking to appeal the Federal Circuit decision, arguing that the petition should be held pending the Supreme Court’s decision in Oil States Energy Services, LLC v. Greene’s Energy Group, LLC, which would later determine whether the IPR process as a whole is unconstitutional.  On October 2, 2017, ZTE filed a response to the petition for a writ of certiorari in which ZTE agreed that the petition should be held pending the Court’s decision in Oil States and then disposed of as appropriate in light of that decision.
On April 24, 2018, the Supreme Court rejected the petitioner’s constitutional challenge to the IPR process in the Oil States case, and on April 30, 2018 denied IPR Licensing, Inc.’s July 28, 2017 petition for a writ of certiorari. On March 6, 2018, in the PTAB remand proceeding, the PTAB again found claim 8 to be invalid. On April 10, 2018, IPR Licensing, Inc. appealed to the Federal Circuit seeking review of the PTAB’s decision. That appeal (the “’244 patent PTAB remand appeal”) remains pending, with oral argument scheduled for August 6, 2019.
On December 21, 2015, the district court entered another scheduling order that vacated the October 2016 date for the ZTE trial related to damages and FRAND-related issues as set forth in the May 2015 scheduling order.
On March 18, 2016, the court denied ZTE’s motion for judgment as a matter of law, or in the alternative for a new trial, with respect to the ’966 and ’847 patents. The court postponed its ruling on ZTE’s motion as to the ’244 patent pending the Federal Circuit’s decision on InterDigital’s appeal of the September 14, 2015 PTAB ruling and administratively closed that portion of the motion.

On April 18, 2016, ZTE filed a stipulated request for dismissal with prejudice of its counterclaims for breach of contract and patent unenforceability based on FRAND and withdrew its corresponding FRAND-related affirmative defenses. The court granted this request the same day. Also on April 18, 2016, ZTE filed a motion under Federal Rule of Civil Procedure 54(b) seeking certification of partial final judgment on the claims for infringement of the ’966 and ’847 patents to allow ZTE to file an immediate appeal as to those patents. The motion was granted on June 7, 2016, and a partial final judgment was entered on June 20, 2016. On July 18, 2016, ZTE filed its notice of appeal with the Federal Circuit regarding the Delaware District Court’s judgment against ZTE with respect to the ’966 and ’847 patents. Oral argument on ZTE’s appeal was heard on October 4, 2017. On November 3, 2017, the Federal Circuit issued its decision affirming the Delaware District Court judgment finding that the ’966 and ’847 patents are not invalid and are infringed by ZTE 3G and 4G cellular devices. On December 4, 2017, ZTE filed a petition for panel rehearing of the Federal Circuit’s decision. The Federal Circuit denied ZTE’s petition on December 20, 2017, and the court’s mandate issued on December 27, 2017.
On May 15, 2017, InterDigital and Nokia/MMO filed a stipulation of dismissal of the case against MMO, Nokia Corporation and Nokia, Inc. pursuant to a Settlement Agreement and Release of Claims among InterDigital, Microsoft Corporation, Microsoft Mobile, Inc., and MMO, dated May 9, 2017, (the “Microsoft Settlement Agreement”). On May 16, 2017, the Delaware District Court granted the stipulation and dismissed the case against MMO, Nokia Corporation and Nokia, Inc. with prejudice.
The case against ZTE remains pending. On January 23,Company's 2019 InterDigital and ZTE filed a joint status report that informed the court of the Federal Circuit’s decision regarding the ’966 and ’847 patents and that the PTAB proceedings regarding the ’244 patent remained pending. The parties jointly requested that the case remain stayed so that the portion of the case related to damages potentially owed by ZTE as to the three patents-in-suit may be coordinated. The court granted this request on January 25, 2019. The case remains stayed pending the conclusion of the ’244 patent PTAB remand appeal, including any further proceedings.
2011 USITC Proceeding (337-TA-800) and Related ZTE Delaware District Court Proceeding
USITC Proceeding (337-TA-800)
On July 26, 2011, InterDigital’s wholly owned subsidiaries InterDigital Communications, LLC (now InterDigital Communications, Inc.), InterDigital Technology Corporation and IPR Licensing, Inc. filed a complaint with the USITC against Nokia Corporation and Nokia Inc., Huawei Technologies Co., Ltd. and FutureWei Technologies, Inc. d/b/a Huawei Technologies (USA) and ZTE Corporation and ZTE (USA) Inc. (collectively, the “337-TA-800 Respondents”), alleging violations of Section 337 of the Tariff Act of 1930 in that they engaged in unfair trade practices by selling for importation into the United States, importing into the United States and/or selling after importation into the United States certain 3G wireless devices (including WCDMA- and cdma2000-capable mobile phones, USB sticks, mobile hotspots and tablets and components of such devices) that infringe several of InterDigital’s U.S. patents. The action also extended to certain WCDMA and cdma2000 devices incorporating WiFi functionality. InterDigital’s complaint with the USITC sought an exclusion order that would bar from entry into the United States any infringing 3G wireless devices (and components) that are imported by or on behalf of the 337-TA-800 Respondents, and also sought a cease-and-desist order to bar further sales of infringing products that have already been imported into the United States. In May 2012, Huawei Device USA, Inc. was added as a 337-TA-800 Respondent.
The ALJ held an evidentiary hearing from February 12-21, 2013. The patents in issue as of the hearing were U.S. Patent Nos. 8,009,636 (the “’636 patent”), 7,706, 830 (the “’830 patent”), 7,502,406 (the “’406 patent”), 7,616,970 (the “’970 patent”), 7,706,332 (the “’332 patent”), 7,536,013 (the “’013 patent”) and 7,970,127 (the “’127 patent”). The ALJ’s Initial Determination (“ID”) issued on June 28, 2013, finding no violation because the asserted patents were not infringed and/or invalid. Among other determinations, with respect to the 337-TA-800 Respondents’ FRAND and other equitable defenses, the ALJ found that Respondents had failed to prove either that InterDigital violated any FRAND obligations, that InterDigital failed to negotiate in good faith, or that InterDigital’s licensing offers were discriminatory. The ALJ also found that InterDigital is not precluded from seeking injunctive relief based on any alleged FRAND commitments.
Petitions for review of the ID to the Commission were filed by InterDigital and the 337-TA-800 Respondents on July 15, 2013. On September 4, 2013, the Commission determined to review the ID in its entirety.
On December 19, 2013, the Commission issued its final determination. The Commission adopted, with some modification, the ALJ’s finding of no violation of Section 337 as to Nokia, Huawei, and ZTE. The Commission did not rule on any other issue, including FRAND and domestic industry, and stated that all other issues remain under review.
On December 20, 2013, InterDigital filed in the Federal Circuit a petition for review seeking reversal of the Commission’s final determination. On February 18, 2015, the Federal Circuit issued a decision affirming the USITC’s

determinations that the claims of the ’830, ’636, ’406 and ’332 patents were not infringed, that the claims of the ’970 patent are invalid, and that the Respondents did not violate Section 337. On April 6, 2015, InterDigital filed a combined petition for panel rehearing and rehearing en banc as to the ’830 and ’636 patents. The petition was denied on May 12, 2015, and the court’s mandate issued on May 19, 2015.
Related Delaware District Court Proceeding
On July 26, 2011, the same date that InterDigital filed USITC Proceeding (337-TA-800), it filed a parallel action in the United States District Court for the District of Delaware against the 337-TA-800 Respondents alleging infringement of the same asserted patents identified in USITC Proceeding (337-TA-800). The Delaware District Court complaint seeks a permanent injunction and compensatory damages in an amount to be determined, as well as enhanced damages based on willful infringement, and recovery of reasonable attorneys' fees and costs. On September 23, 2011, the defendants in the Delaware District Court complaint filed a motion to stay the Delaware District Court action pending the parallel proceedings in the USITC. Because the USITC has instituted USITC Proceeding (337-TA-800), the defendants have a statutory right to a mandatory stay of the Delaware District Court proceeding pending a final determination in the USITC. On October 3, 2011, InterDigital amended the Delaware District Court complaint, adding LG as a defendant and adding the same additional patent that InterDigital requested be added to USITC Proceeding (337-TA-800). On October 11, 2011, the Delaware District Court granted the defendants' motion to stay. The case is currently stayed through September 9, 2019.
On January 14, 2014, InterDigital and Huawei filed a stipulation of dismissal of their disputes in this action on account of the confidential settlement agreement mentioned above. On the same day, the Delaware District Court granted the stipulation of dismissal.
On May 15, 2017, InterDigital and Nokia filed a stipulation of dismissal of their dispute pursuant to the Microsoft Settlement Agreement discussed above. On May 16, 2017, the Delaware District Court granted the stipulation and dismissed the case with prejudice with respect to Nokia Corporation and Nokia Inc.
In December 2017, InterDigital entered into a patent license agreement with LG, pursuant to which the parties agreed to terms for dismissal by InterDigital of the outstanding litigation among the parties and their affiliates. Accordingly, on December 5, 2017, InterDigital and LG filed a stipulation of dismissal of the case against LG. On the same day, the Delaware District Court granted the stipulation and dismissed the case against LG with prejudice.
The case remains pending with respect to ZTE.Form 10-K.
OTHER
We are party to certain other disputes and legal actions in the ordinary course of business, including arbitrations and legal proceedings with licensees regarding the terms of their agreements and the negotiation thereof. We do not currently believe that these matters, even if adversely adjudicated or settled, would have a material adverse effect on our financial condition, results of operations or cash flows. None of the preceding matters have met the requirements for accrual or disclosure of a potential range as of June 30, 2019.March 31, 2020.
7.6. BUSINESS COMBINATIONS AND OTHER TRANSACTIONS
Acquisition of Technicolor's Patent Licensing Business
On July 30, 2018, we completed our acquisition of the patent licensing business of Technicolor, a worldwide technology leader in the media and entertainment sector (the "Technicolor Patent Acquisition"). The Technicolor Patent

Acquisition included the acquisition by InterDigitalthe Company of approximately 18,000 patents and applications, across a broad range of technologies, including approximately 3,000 worldwide video coding patents and applications. Refer to our 20182019 Form 10-K for further information on the Technicolor Patent Acquisition.
The Technicolor Patent Acquisition met the definition of a business combination, and, as such, was accounted for using the acquisition method of accounting. We allocated the fair value of consideration transferred to identifiable assets acquired and liabilities assumed based on their estimated fair values as of the acquisition date. We recorded the excess of the fair value of consideration transferred over the net values of these assets and liabilities as goodwill.
The amount of revenue and earnings that would have been included in the Company’s condensed consolidated statement of income for the three and six months ended June 30, 2018 had the acquisition date been January 1, 2017 are reflected in the table below. These amounts have been calculated after applying the Company's accounting policies and adjusting the results to reflect additional interest expense as well as amortization that would have been charged assuming the fair value adjustments to amortizable intangible assets had been recorded as of January 1, 2017. In addition, pro forma

adjustments have been made to reflect the impact of the transaction-related costs discussed below. These unaudited pro forma combined results of operations have been prepared for comparative purposes only, and they do not purport to be indicative of the results of operations that actually would have resulted had the acquisition occurred on the date indicated, or that may result in the future. The amounts in the table are unaudited (in thousands):
 Three Months Ended Six Months Ended
 June 30, June 30,
 2018 2018
Actual revenue$69,555
 $156,999
Supplemental pro forma revenue72,419
 162,727
Actual earnings10,966
 41,196
Supplemental pro forma earnings (loss)(426) 17,662
Actual diluted earnings per share0.31
 1.16
Supplemental pro forma diluted earnings (loss) per share(0.01) 0.50

Acquisition of Technicolor's Research & Innovation Unit
On May 31, 2019, we completed the acquisition of the Research & Innovation or R&I, unit of Technicolor SA.SA (the "R&I Acquisition"). The acquisition brings the Company’s research team to approximately 340 engineers in eight R&D offices worldwide, and expands&I Acquisition expanded the Company’s research capabilities in video coding, Internet of Things ("IoT") and smart home, imaging sciences, augmented reality and virtual reality, and artificial intelligence and machine learning technologies. The Technicolor R&I unit was the driving creative force behind the patent portfolio that was acquired in the Technicolor Patent Acquisition discussed above.
The acquisition of Refer to our 2019 Form 10-K for further information on the R&I unitAcquisition.
The R&I Acquisition met the definition of an asset acquisition and was accounted for using the cost accumulation and allocation model. There was no cash consideration for the acquisition.R&I Acquisition. As consideration for the acquisition,R&I Acquisition, the jointly funded R&D collaboration that was entered into as part of the Technicolor Patent Acquisition was terminated. Technicolor will continue to fund research to be performed by the R&I unit (which is now part of InterDigital R&I) for certain limited projects for a specified time period, subject to renewal. The Company also assumed certain employee-related liabilities, including obligations for certain defined benefit post-retirement plans for the acquired R&I unit employees, which are further discussed below. Additionally, Technicolor agreed to reduce its rights under the revenue-sharing arrangement entered into as part of the Technicolor Patent Acquisition, as further discussed below.
The acquisition of the R&I unit resulted in a net gain of approximately $14.2 million in second quarter 2019, inclusive of the $20.5 million gain from the derecognition of the contingent consideration liability described below, all of which is included within “Other Income (Net)” in the condensed consolidated statement of income.
Contingent Consideration
The original revenue-sharing arrangement between the Company and Technicolor created a contingent consideration liability upon closing of the Technicolor Patent Acquisition in third quarter 2018. Refer to our 20182019 Form 10-K for further information on the initial contingent consideration liability which was accounted for at fair value each reporting period.
Under the amended revenue-sharing arrangement described above, Technicolor will now receive 42.5% of future cash receipts from new licensing efforts from the Madison Arrangement (as defined below) only, subject to certain conditions and hurdles, but will no longer receive revenue-sharing from other licensing efforts in the consumer electronics field outside of the Madison Arrangement. We determined that the initial contingent consideration liability from the Technicolor Patent Acquisition was significantly modified in conjunction with the acquisition of the R&I unit,Acquisition, and, as such, the contingent consideration liability willis now be accounted for under ASC 450 - Contingencies under the asset acquisition framework when the liability is deemed probable and estimable. SinceAs of March 31, 2020, the contingent consideration liability arising from the amended revenue-sharing arrangement was deemed not probable and estimable as of the acquisition date, the carrying value of the previous contingent consideration liability was derecognized, which resulted in a $20.5 million gain and is includedtherefore not reflected within "Other Income (Net)” in the condensed consolidated statement of income.financial statements.
Defined Benefit Plans
In connection with the Technicolor Patent Acquisition and the acquisition of the R&I unit,Acquisition, we assumed certain defined benefit plans which are accounted for in accordance with ASC 715 - Compensation - Retirement Benefits. These plans include a retirement lump sum indemnity plan and jubilee plan, both of which provide benefit payments to employees based upon years of service and compensation levels. As of June 30, 2019,March 31, 2020, the combined accumulated projected benefit obligation related to

these plans totaled $6.7$6.2 million. Service cost and interest cost for the combined plans totaled $0.1 million for the sixthree months ended June 30, 2019.March 31, 2020. These plans are not required to be funded and were not funded as of June 30, 2019.March 31, 2020.
Madison Arrangement
In conjunction with the Technicolor Patent Acquisition, effective July 30, 2018, we assumed Technicolor’s rights and obligations under a joint licensing program with Sony Corporation (“Sony”("Sony") relating to digital televisions and standalone computer display monitors, which commenced in 2015 and is referred to as the "Madison Arrangement." We also assumed Technicolor's role as sole licensing agent for the Madison Arrangement. As licensing agent, we are responsible for making decisions regarding the prosecution and maintenance of the combined patent portfolio and the licensing and enforcement of the combined patent portfolio in the field of use of digital TVs and computer display monitors on an exclusive basis during the specified term in exchange for an agent fee. The Madison Arrangement falls under the scope of ASC 808, Collaborative Arrangements ("ASC 808”808"). Refer to our 20182019 Form 10-K for further information on the Madison Arrangement.
Long-term debt

An affiliate of CPPIB Credit Investments Inc. ("CPPIB Credit"), a wholly owned subsidiary of Canada Pension Plan Investment Board, is a third-party investor in the Madison Arrangement. CPPIB Credit has made certain payments to Technicolor and Sony and has agreed to contribute cash to fund certain capital reserve obligations under the arrangement in exchange for a percentage of future revenues, specifically through September 11, 2030 in regard to the Technicolor patents.
Upon our assumption of Technicolor’s rights and obligations under the Madison Arrangement, our relationship with CPPIB Credit meets the criteria in ASC 470-10-25 - Sales of Future Revenues or Various Other Measures of Income ("ASC 470”470"), which relates to cash received from an investor in exchange for a specified percentage or amount of revenue or other measure of income of a particular product line, business segment, trademark, patent, or contractual right for a defined period. Under this guidance, we recognized the fair value of our contingent obligation to CPPIB Credit, as of the acquisition date, as long-term debt in our condensed consolidated balance sheet. This initial fair value measurement was based on the perspective of a market participant and included significant unobservable inputs which are classified as Level 3 inputs within the fair value hierarchy. The fair value of the long-term debt as of June 30, 2019March 31, 2020 and December 31, 20182019 is disclosed within Note 8.9. Our repayment obligations are contingent upon future royalty revenues generated from the Madison Arrangement and there are no minimum or maximum payments under the arrangement.
Under ASC 470, amounts recorded as debt are amortized under the interest method. At each reporting period, we will review the discounted expected future cash flows over the life of the obligation. The Company made an accounting policy election to utilize the catch-up method when there is a change in the estimated future cash flows, whereby we will adjust the carrying amount of the debt to the present value of the revised estimated future cash flows, discounted at the original effective interest rate, with a corresponding adjustment recognized as interest expense within “Interest Expense” in the condensed consolidated statements of income. The effective interest rate as of the acquisition date was approximately 14.5%. This rate represents the discount rate that equates the estimated future cash flows with the fair value of the debt as of the acquisition date, and is used to compute the amount of interest to be recognized each period based on the estimated life of the future revenue streams. During the three and six months ended June 30,March 31, 2020 and 2019, we recognized $0.6$0.7 million and $1.3$0.6 million respectively, of interest expense related to this debt, which was included within “Interest Expense” in the condensed consolidated statements of income. Any future payments made to CPPIB Credit, or additional proceeds received from CPPIB Credit, will decrease or increase the long-term debt balance accordingly.
Restricted cash
Under the Madison Arrangement, the parties reserve cash in bank accounts to fund our activities to manage the portfolios. These accounts are custodial accounts for which the funds are restricted for this purpose. Refer to Note 87, "Cash, Concentration of Credit Risk and Fair Value of Financial Instruments," for a reconciliation of total cash, cash equivalents and restricted cash as of June 30, 2019March 31, 2020 and December 31, 20182019 to the captions within the condensed consolidated balance sheets.
Commitments
To receive consent from both Sony and CPPIB Credit to assume the rights and responsibilities of Technicolor under the Madison Arrangement, we committed to contributing cash to fund shortfalls in the Madison Arrangement, up to a maximum of $25.0 million, through 2020. A shortfall funding is only required in the scenario where the restricted cash is not sufficient to fund current obligations. In the event that we fund a shortfall, any surplus cash resulting from subsequent royalty receipts would be used to repay our shortfall funding plus 25% interest in advance of distributions of royalties to either Sony or CPPIB Credit, assuming they have not participated in the funding of the shortfall. As of June 30, 2019,March 31, 2020, we have not contributed any shortfall funding.
Transaction costs

Transaction and integration related costs related to the above transactions for the three months ended June 30,March 31, 2020 and 2019 and 2018 were $1.7$0.7 million and $2.3 million, respectively. Transaction and integration related costs related to the above transactions for the six months ended June 30, 2019 and 2018 were $4.8 million and $3.8$3.0 million, respectively. The majority of these costs were recorded within “PatentPatent administration and licensing”licensing and “Selling,Selling, general and administrative”administrative expenses in the condensed consolidated statements of income.
8.7. CASH, CONCENTRATION OF CREDIT RISK AND FAIR VALUE OF FINANCIAL INSTRUMENTS
Cash, Cash Equivalents and Restricted Cash
Cash, cash equivalents and restricted cash as of June 30, 2019 and December 31, 2018 consistedcurrently consists of money market and demand accounts. The following table provides a reconciliation of total cash, cash equivalents and restricted cash as of June 30,March 31, 2020, December 31, 2019 and DecemberMarch 31, 20182019 to the captions within the condensed consolidated balance sheets and condensed consolidated statements of cash flows (in thousands). The Company had no restricted cash balance prior to third quarter 2018.

 March 31, December 31, March 31,
 2020 2019 2019
Cash and cash equivalents$515,793
 $745,491
 $503,240
Restricted cash included within prepaid and other current assets12,851
 10,526
 13,372
Restricted cash included within other non-current assets1,081
 1,081
 
Total cash, cash equivalents and restricted cash$529,725
 $757,098
 $516,612
 June 30, December 31,
 2019 2018
Cash and cash equivalents$531,698
 $475,056
Restricted cash included within prepaid and other current assets11,465
 13,677
Total cash, cash equivalents and restricted cash$543,163
 $488,733

Concentration of Credit Risk and Fair Value of Financial Instruments
Financial instruments that potentially subject us to concentration of credit risk consist primarily of cash equivalents, short-term investments, and accounts receivable. We place our cash equivalents and short-term investments only in highly rated financial instruments and in United States government instruments.
Our accounts receivable and contract assets are derived principally from patent license and technology solutions agreements. As of June 30, 2019March 31, 2020 and December 31, 2018,2019, five and seven licensees, respectively, comprised 72%66% and 76%73% of our net accounts receivable balance, respectively. We perform ongoing credit evaluations of our licensees, who generally include large, multinational, wireless telecommunications equipment manufacturers. We believe that the book values of our financial instruments approximate their fair values.
Fair Value Measurements
We use various valuation techniques and assumptions when measuring the fair value of our assets and liabilities. We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. This guidance established a hierarchy that prioritizes fair value measurements based on the types of input used for the various valuation techniques (market approach, income approach and cost approach). The levels of the hierarchy are described below:
Level 1 Inputs — Level 1 includes financial instruments for which quoted market prices for identical instruments are available in active markets.
Level 2 Inputs — Level 2 includes financial instruments for which there are inputs other than quoted prices included within Level 1 that are observable for the instrument such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets with insufficient volume or infrequent transactions (less active markets) or model-driven valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data, including market interest rate curves, referenced credit spreads and pre-payment rates.
Level 3 Inputs — Level 3 includes financial instruments for which fair value is derived from valuation techniques including pricing models and discounted cash flow models in which one or more significant inputs are unobservable, including the Company’s own assumptions. The pricing models incorporate transaction details such as contractual terms, maturity and, in certain instances, timing and amount of future cash flows, as well as assumptions related to liquidity and credit valuation adjustments of marketplace participants.
Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of financial assets and financial liabilities and their placement within the fair value hierarchy. We use quoted market prices for similar assets to estimate the fair value of our Level 2 investments.
Recurring Fair Value Measurements

Our financial assets are generally included within short-term investments on our condensed consolidated balance sheets, unless otherwise indicated. Our financial assets and liabilities that are accounted for at fair value on a recurring basis are presented in the tables below as of June 30, 2019March 31, 2020 and December 31, 20182019 (in thousands):

Fair Value as of June 30, 2019Fair Value as of March 31, 2020
Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total
Assets:              
Money market and demand accounts (a)$543,163
 $
 $
 $543,163
$519,725
 $
 $
 $519,725
Commercial paper (b)
 
 
 

 88,125
 
 88,125
U.S. government securities
 167,236
 
 167,236

 86,189
 
 86,189
Corporate bonds, asset backed and other securities
 132,225
 
 132,225

 100,793
 
 100,793
Total$543,163
 $299,461
 $
 $842,624
$519,725
 $275,107
 $
 $794,832


Fair Value as of December 31, 2018Fair Value as of December 31, 2019
Level 1 Level 2 Level 3 TotalLevel 1 Level 2 Level 3 Total
Assets:              
Money market and demand accounts (a)$488,733
 $
 $
 $488,733
$757,098
 $
 $
 $757,098
Commercial paper (b)
 14,548
 
 14,548

 
 
 
U.S. government securities
 289,576
 
 289,576

 105,702
 
 105,702
Corporate bonds, asset backed and other securities
 166,600
 
 166,600

 73,502
 
 73,502
Total$488,733
 $470,724
 $
 $959,457
$757,098
 $179,204
 $
 $936,302
Liabilities:       
Contingent consideration resulting from the Technicolor Acquisition$
 $
 $19,800
 $19,800
Total$
 $
 $19,800
 $19,800

(a)Primarily included within cash and cash equivalents.
(b)As of June 30, 2019March 31, 2020 and December 31, 2018,2019, zero commercial paper was included within cash and cash equivalents.

Level 3 Fair Value Measurements
Contingent consideration
As discussed in Note 7,6, "Business Combinations and Other Transactions," we completed the Technicolor Patent Acquisition during third quarter 2018. In conjunction with the Technicolor Patent Acquisition, we initially recognized a contingent consideration liability which was measured at fair value on a recurring basis using significant unobservable inputs classified as Level 3 measurements within the fair value hierarchy. We utilized a Monte Carlo simulation model to determine the estimated fair value of the contingent consideration liability through first quarter 2019. A Monte Carlo simulation uses random numbers together with volatility assumptions to generate individual paths, or trials, for variables of interest governed by a Geometric Brownian Motion in a risk-neutral framework.
During second quarter 2019,As discussed in Note 6, "Business Combinations and Other Transactions," we completed the acquisition of the R&I unit of Technicolor SA.Acquisition during second quarter 2019. The transaction met the definition of an asset acquisition and was accounted for using the cost accumulation and allocation model. As discussed in Note 7, "Business Combinations and Other Transactions," as part of this acquisition,the R&I Acquisition, Technicolor reduced its rights to the revenue-sharing arrangement that created the initial contingent consideration liability from the Technicolor Patent Acquisition. We determined that the initial contingent consideration liability from the Technicolor Patent Acquisition was significantly modified in conjunction with the acquisition of the R&I unit,Acquisition, and, as such, the contingent consideration liability will now be accounted for under ASC 450 - Contingencies under the asset acquisition framework when the liability is deemed probable and estimable. Since the contingent consideration liability arising from the amended revenue-sharing arrangement was not probable and estimable as of the acquisition date, the carrying value of the previous contingent consideration liability was derecognized, which resulted in a $20.5 million gain which iswas included within "Other Income (Net)(Expense), Net” in the condensed consolidated statement of income for second quarter 2019. Therefore, effective as of the acquisition datecompletion of the R&I Acquisition on May 31, 2019, the contingent consideration liability iswas no longer a Level 3 fair value recurring measurement.
The following table providesNon-Recurring Fair Value Measurements
Investments in Other Entities
During first quarter 2020, we recognized a reconciliation$5.5 million unrealized gain resulting from observable price changes in orderly transactions of the beginning and ending balancesone of our Level 3 fair value measurements from December 31, 2018 to June 30, 2019,long-term strategic investments, which includes the contingent consideration liability resulting from

the Technicolor Acquisition discussed further above. The Level 3 contingent consideration liability was historically included within "Other long-term liabilitiesIncome (Expense), Net" in the condensed consolidated balance sheet priorstatement of income.

Lease Assets
During first quarter 2020, we recognized a $1.1 million impairment, comprised of $0.8 million of Property, Plant, and Equipment, and $0.3 million of Right of Use Asset related to its derecognitionthe abandonment of 1 of our leased properties, which was included within “Operating Expense in second quarter 2019.the condensed consolidated statement of income.
Level 3 Fair Value Measurements

 Contingent Consideration Liability
Balance as of December 31, 2018 $19,800
Changes in fair value recognized in the condensed consolidated statements of income  710
Derecognition of contingent consideration liability as a Level 3 fair value measurement  (20,510)
Balance as of June 30, 2019 $

Fair Value of Long-Term Debt
2024 and 2020 Senior Convertible Notes
The principal amount, carrying value and related estimated fair value of the Company's senior convertible debt reported in the condensed consolidated balance sheets as of June 30, 2019March 31, 2020 and December 31, 20182019 was as follows (in thousands). The aggregate fair value of the principal amount of the senior convertible long-term debt is a Level 2 fair value measurement.
 March 31, 2020 December 31, 2019
 
Principal
Amount
 
Carrying
Value
 
Fair
Value
 
Principal
Amount
 Carrying
Value
 
Fair
Value
Senior Convertible Long-Term Debt$400,000
 $332,997
 $366,760
 $494,909
 $423,657
 $492,969
 June 30, 2019 December 31, 2018
 
Principal
Amount
 
Carrying
Value
 
Fair
Value
 
Principal
Amount
 Carrying
Value
 
Fair
Value
Senior Convertible Long-Term Debt$494,909
 $414,663
 $505,101
 $316,000
 $298,951
 $331,595

Technicolor Patent Acquisition Long-term Debt
As more fully disclosed in Note 7,6, "Business Combinations and Other Transactions," we recognized long-term debt in conjunction with the Technicolor Patent Acquisition. The carrying value and related estimated fair value of the Technicolor Patent Acquisition long-term debt reported in the condensed consolidated balance sheets as of June 30, 2019March 31, 2020 and December 31, 20182019 was as follows (in thousands). The aggregate fair value of the Technicolor Patent Acquisition long-term debt is a Level 3 fair value measurement.
 June 30, 2019 December 31, 2018
 
Carrying
Value
 
Fair
Value
 Carrying
Value
 
Fair
Value
Technicolor Acquisition Long-Term Debt$19,708
 $21,730
 $18,428
 $19,100
 March 31, 2020 December 31, 2019
 
Carrying
Value
 
Fair
Value
 Carrying
Value
 
Fair
Value
Technicolor Patent Acquisition Long-Term Debt$21,826
 $24,261
 $21,101
 $23,305

9.8. LONG-TERM DEBT
Technicolor Patent Acquisition Long-Term Debt
Refer to Note 7,6, "Business Combinations and Other Transactions," and Note 8,7, "Cash, Concentration of Credit Risk and Fair Value of Financial Instruments," for information regarding the long-term debt recognized in conjunction with the Technicolor Patent Acquisition.
2024 Senior Convertible Notes, and Related Note Hedge and Warrant Transactions
On June 3, 2019 we issued $400.0 million in aggregate principal amount of 2.00% Senior Convertible Notes due 2024 (the "2024 Notes"). The net proceeds from the issuance of the 2024 Notes, after deducting the initial purchasers' transaction fees and offering expenses, were approximately $391.6 million. The 2024 Notes bear interest at a rate of 2.00% per year, payable in cash on June 1 and December 1 of each year, commencing on December 1, 2019, and mature on June 1, 2024, unless earlier converted or repurchased.
The 2024 Notes will be convertible into cash, shares of our common stock or a combination thereof, at our election, at an initial conversion rate of 12.3018 shares of common stock per $1,000 principal amount of 2024 Notes (which is equivalent

to an initial conversion price of approximately $81.29 per share), as adjusted pursuant to the terms of the indenture governing the 2024 Notes (the "Indenture"). The conversion rate of the 2024 Notes, and thus the conversion price, may be adjusted in certain circumstances, including in connection with a conversion of the 2024 Notes made following certain fundamental changes and under other circumstances set forth in the Indenture. It is our current intent and policy to settle all conversions of the 2024 Notes through combination settlements of cash and shares of common stock, with a specified dollar amount of $1,000 per $1,000 principal amount of 2024 Notes and any remaining amounts in shares of common stock.
Prior to 5:00 p.m., New York City time, on the business day immediately preceding March 1, 2024, the 2024 Notes will be convertible only under certain circumstances as set forth in the Indenture, including on any date during any calendar quarter (and only during such calendar quarter) beginning after September 30, 2019 if the closing sale price of the common stock was more than 130% of the applicable conversion price (approximately $105.68 based on the current conversion price of the 2024 Notes) on each applicable trading day for at least 20 trading days (whether or not consecutive) in the period of the 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter.
Commencing on March 1, 2024, the 2024 Notes will be convertible at any time prior to 5:00 p.m., New York City time, on the second scheduled trading day immediately preceding the maturity date of the 2024 Notes.
The Company may not redeem the 2024 Notes prior to their maturity date.
If a fundamental change (as defined in the Indenture) occurs, holders may require the Company to purchase all or a portion of their 2024 Notes for cash at a repurchase price equal to 100% of the principal amount of the 2024 Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. The 2024 Notes are our senior unsecured obligations and rank equally in right of payment with any of our current and any future senior unsecured indebtedness, including our 1.50% senior convertible notes due 2020 (the “2020 Notes”) discussed below.indebtedness. The 2024 Notes are effectively subordinated to all of our future secured indebtedness to the extent of the value of the related collateral, and the 2024 Notes are structurally subordinated to indebtedness and other liabilities, including trade payables, of our subsidiaries.

On May 29 and May 31, 2019, in connection with the offering of the 2024 Notes, we entered into convertible note hedge transactions (collectively, the “2024 Note Hedge Transactions”) that cover, subject to customary anti-dilution adjustments, approximately 4.9 million shares of common stock, in the aggregate, at a strike price that initially corresponds to the initial conversion price of the 2024 Notes, subject to adjustment, and are exercisable upon any conversion of the 2024 Notes. The aggregate cost of the 2024 Note Hedge Transactions was $72.0 million.
On May 29 and May 31, 2019, we also entered into privately negotiated warrant transactions (collectively, the “2024 Warrant Transactions” and, together with the 2024 Note Hedge Transactions, the “2024 Call Spread Transactions”), whereby we sold warrants to acquire, subject to customary anti-dilution adjustments, approximately 4.9 million shares of common stock at an initial strike price of approximately $109.43 per share, subject to adjustment. As consideration
Refer to Note 10, "Obligations" within the Notes to the Consolidated Financial Statements included in Part II, Item 8 of the 2019 Form 10-K for further information regarding the 2024 Warrant Transactions, we received aggregate proceeds of $47.6 million. The net cost of theNotes and 2024 Call Spread Transactions, was $24.4 million.
The net proceeds fromincluding the issuanceaccounting treatment of the 2024 Notes, after deducting fees and offering expenses, were used for the following: (i) $232.7 million was used to repurchase $221.1 million in aggregate principal amount of the 2020 Notes (as defined below) in privately negotiated transactions concurrently with the offering of the 2024 Notes (ii) $19.6 million was used to repurchase shares of common stock at $62.53 per share, the closing price of the stock on May 29, 2019; and (iii) $24.4 million, in addition to the proceeds from the 2024 Warrant Transactions discussed above, was used to fund the cost of the 2024 Call Spread Transactions. We expect to use the remaining net proceeds for general corporate purposes, which may include, among other things, the redemption, repurchase or other retirement of any remaining 2020 Notes.
Accounting Treatment of the 2024 Notes and Related Convertible Note Hedge and Warrant Transactions
The 2024 Call Spread Transactions were classified as equity. The Company bifurcated the proceeds from the offering of the 2024 Notes between liability and equity components. On the date of issuance, the liability and equity components were calculated to be approximately $328.0 million and $72.0 million, respectively. The initial $328.0 million liability component was determined based on the fair value of similar debt instruments excluding the conversion feature. The initial $72.0 million ($56.9 million net of tax) equity component represents the difference between the fair value of the initial $328.0 million in debt and the $400.0 million gross proceeds. The related initial debt discount of $72.0 million is being amortized over the life of the 2024 Notes using the effective interest method. An effective interest rate of 6.25% was used to calculate the debt discount on the 2024 Notes.
In connection with the above-noted transactions, the Company incurred approximately $8.4 million of directly related costs. The initial purchasers' transaction fees and related offering expenses were allocated to the liability and equity components in proportion to the allocation of proceeds and accounted for as debt and equity issuance costs, respectively. We allocated $6.4 million of debt issuance costs to the liability component, which were capitalized as deferred financing costs.

These costs are being amortized as interest expense over the term of the debt using the effective interest method. The remaining $1.9 million of costs ($1.6 million net of tax) allocated to the equity component were recorded as a reduction of the equity component.these transactions.
2020 Senior Convertible Notes, and Related Note Hedge and Warrant Transactions
On March 11, 2015, we issued $316.0 million in aggregate principal amount of 1.50% Senior Convertible Notes due 2020, (the “2020 Notes”).referred to as the 2020 Notes. The 2020 Notes bearbore interest at a rate of 1.50% per year, payable in cash on March 1 and September 1 of each year, which commenced September 1, 2015, and maturematured on March 1, 2020, unless earlier converted or repurchased.2020. In connection with the initial offering of the 2020 Notes, on March 5 and March 9, 2015, we entered into convertible note hedge transactions (the “2020 Note Hedge Transactions”) that initially covered approximately 4.4 million shares of common stock at a strike price that initially corresponded to the initial conversion price of the 2020 Notes and are exercisable upon any conversion of the 2020 Notes. On March 5 and March 9, 2015, we also entered into warrant transactions (collectively, the "2020 Warrant Transactions" and, together with the 2020 Note Hedge Transactions, the "2020 Call Spread Transactions") to initially acquire, subject to customary anti-dilution adjustments, approximately 4.4 million shares of common stock. The warrants become exercisable and expire in daily tranches over a three and a half month period starting in June 2020. Refer to the 2018 Form 10-K for further details on this transaction.
As noted above, duringDuring second quarter 2019, the Company used $232.7 million from the offering of the 2024 Notes to repurchase $221.1 million in aggregate principal amount of the 2020 Notes in privately negotiated transactions concurrently with the offering of the 2024 Notes. As a result of the partial repurchase of the 2020 Notes, $94.9 million in aggregate principal amount of the 2020 Notes remained outstanding as of June 30, 2019. Additionally, on May 29, 2019, in connection with the partial repurchase of the 2020 Notes, the Company entered into partial unwind agreements that amend the terms of the 2020 Note Hedge Transactions to reduce the number of options corresponding to the principal amount of the repurchased 2020 Notes. The unwind agreements also reduce the number of warrants exercisable under the 2020 Warrant Transactions. As a result of the partial unwind transactions, approximately 1.3 million shares of common stock in the aggregate were covered under each of the 2020 Note Hedge Transactions and the 2020 Warrant Transactions as of June 30, 2019.March 31, 2020. As of June 30, 2019,March 31, 2020, the warrants under the 2020 Warrant Transactions had a strike price of approximately $86.79$86.10 per share, as adjusted. Proceeds received fromRefer to Note 10, "Obligations" within the unwindNotes to the Consolidated Financial Statements included in Part II, Item 8 of the 2020 Note Hedge Transactions were $9.0 million, and consideration paid2019 Form 10-K for the unwind offurther information regarding the 2020 Warrant Transactions was $4.2Notes and 2020 Call Spread Transactions.
As described above, the 2020 Notes matured on March 1, 2020. On the maturity date, the outstanding balance of $94.9 million resulting in net proceeds received of $4.9 million for the combined unwind transactions which was recorded to equity in second quarter 2019.
We recognized a $5.5 million loss on extinguishment of debt during second quarter 2019 in connection with this repurchase, which is included within "Other Income (Net)" in the condensed consolidated statement of income for the period. The loss on extinguishment represents the difference between the calculated fair value of the debt immediately prior to its derecognition and the carrying amount of the debt component, including any unamortized debt discount and issuance costs. The remaining consideration paid for the partial repurchase ofunder the 2020 Notes was allocated to the reacquisition of the equity component, which equaled $13.0 million ($10.6 million net of tax) and was recorded as a reduction of equityrepaid in second quarter 2019. The remaining unamortized debt discount and issuance costs of $3.3 million will continue to be amortized throughout the remaining life of the 2020 Notes, which are set to mature in March 2020.
The remaining 2020 Notes will be convertible into cash, shares of our common stock or a combination thereof, at our election, at a current conversion rate of 14.0823 shares of common stock per $1,000 principal amount of 2020 Notes (which is equivalent to a conversion price of approximately $71.01 per share), as adjusted pursuant to the terms of the indenture governing the 2020 Notes (the "2020 Notes Indenture"). The conversion rate of the 2020 Notes, and thus the conversion price, may be adjusted in certain circumstances, including in connection with a conversion of the 2020 Notes made following certain fundamental changes and under other circumstances set forth in the 2020 Notes Indenture. It is our current intent and policy to settle all conversions of the 2020 Notes through combination settlements of cash and shares of common stock, with a specified dollar amount of $1,000 per $1,000 principal amount of 2020 Notes and any remaining amounts in shares of common stock.
Prior to 5:00 p.m., New York City time, on the business day immediately preceding December 1, 2019, the 2020 Notes will be convertible only under certain circumstances as set forth in the 2020 Notes Indenture, including on any date during any calendar quarter (and only during such calendar quarter) if the closing sale price of our common stock was more than 130% of the applicable conversion price (approximately $92.31 based on the current conversion price of the 2020 Notes) on each applicable trading day for at least 20 trading days in the period of the 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter.
Commencing on December 1, 2019, the 2020 Notes will be convertible at any time prior to 5:00 p.m., New York City time, on the second scheduled trading day immediately preceding the maturity date of the 2020 Notes.
The Company may not redeem the 2020 Notes prior to their maturity date.

full.
The following table reflects the carrying value of the 2024 Notes and 2020 Notes as of June 30, 2019March 31, 2020 and December 31, 20182019 (in thousands):
 March 31, 2020 December 31, 2019
 2024 Notes 2024 Notes2020 NotesTotal
Principal$400,000
 $400,000
$94,909
$494,909
Less:    

Unamortized interest discount(61,502) (64,724)(669)$(65,393)
Deferred financing costs(5,501) (5,789)(70)$(5,859)
Net carrying amount of 2024 and 2020 Notes$332,997
 $329,487
$94,170
$423,657

 June 30, 2019 December 31, 2018
 2024 Notes2020 NotesTotal 2020 Notes
Principal$400,000
$94,909
$494,909
 $316,000
Less:     
Unamortized interest discount(70,945)(2,677)(73,622) (15,428)
Deferred financing costs(6,346)(278)(6,624) (1,621)
Net carrying amount of 2024 and 2020 Notes$322,709
$91,954
$414,663
 $298,951

The following table presents the amount of interest cost recognized, which is included within "Interest Expense" in our condensed consolidated statements of income, for the three and six months ended June 30, 2019March 31, 2020 and June 30, 2018March 31, 2019 relating to the contractual interest coupon, accretion of the debt discount, and the amortization of deferred financing costs (in thousands):
Three months ended June 30,Three months ended March 31,
2019 20182020 2019
2024 Notes 2020 Notes Total 2024 Notes 2020 Notes Total2024 Notes 2020 Notes Total 2020 Notes
Contractual coupon interest$600
 $927
 $1,527
 $
 $1,185
 $1,185
$2,000
 $237
 $2,237
 $1,185
Accretion of debt discount1,101
 2,520
 3,621
 
 3,094
 3,094
3,222
 669
 3,891
 3,215
Amortization of deferred financing costs98
 266
 364
 
 347
 347
288
 70
 358
 347
Total$1,799
 $3,713
 $5,512
 $
 $4,626
 $4,626
$5,510
 $976
 $6,486
 $4,747

 Six months ended June 30,
 2019 2018
 2024 Notes 2020 Notes Total 2024 Notes 2020 Notes Total
Contractual coupon interest$600
 $2,112
 $2,712
 $
 $2,370
 $2,370
Accretion of debt discount1,101
 5,735
 6,836
 
 6,126
 6,126
Amortization of deferred financing costs98
 613
 711
 
 695
 695
Total$1,799
 $8,460
 $10,259
 $
 $9,191
 $9,191

10.9. VARIABLE INTEREST ENTITIES
As further discussed below, we are the primary beneficiary of three3 variable interest entities. As of June 30,March 31, 2020, the combined book values of the assets and liabilities associated with these variable interest entities included in our condensed consolidated balance sheet were $65.3 million and $3.9 million, respectively. Assets included $23.8 million of cash and cash equivalents, $3.2 million of accounts receivable and prepaid assets, and $38.3 million of patents, net. As of December 31, 2019, the combined book values of the assets and liabilities associated with these variable interest entities included in our condensed consolidated balance sheet were $48.1$60.6 million and $7.2$5.4 million, respectively. Assets included $28.3$18.5 million of cash and cash equivalents, $1.5$1.7 million of accounts receivable, and prepaid assets, $17.2$39.3 million of patents, net, and $1.3 million of other non-current assets. As of December 31, 2018, the combined book values of the assets and liabilities associated with these variable interest entities included in our condensed consolidated balance sheet were $29.9 million and $6.1 million, respectively. Assets included $11.7 million of cash and cash equivalents, $1.3 million of accounts receivable, $14.4 million of patents, net, and $2.5 million of other non-current assets.
Chordant
On January 31, 2019, we launched the Company’s Chordant™ business as a standalone company. The spinout of the unit, which now includes an affiliate of Sony as an investor along with the Company, gives Chordant added independence and flexibility in driving into its core operator and smart city markets. Chordant is a variable interest entity and we have determined that we are the primary beneficiary for accounting purposes and will consolidate Chordant.  For the three and six months ended June 30,March 31, 2020 and 2019, we have allocated approximately $0.4$0.3 million and $0.7$0.3 million, respectively, of Chordant's net loss to noncontrolling interests held by other parties.

Convida Wireless
Convida Wireless was launched in 2013 and most recently renewed in 2018 to combine Sony's consumer electronics expertise with our pioneering IoT expertise to drive IoT communications and connectivity.  Based on the terms of the agreement, the parties will contribute funding and resources for additional research and platform development, which we will perform.  SCP IP Investment LLC, an affiliate of Stephens Inc., is a minority investor in Convida Wireless.
Convida Wireless is a variable interest entity. Based on our provision of research and platform development services to Convida Wireless, we have determined that we remain the primary beneficiary for accounting purposes and will continue to consolidate Convida Wireless.  For the three and six months ended June 30,March 31, 2020 and 2019, and 2018, we have allocated approximately $1.0$1.5 million and $2.1$1.1 million, respectively, of Convida Wireless's net loss to noncontrolling interests held by other parties.
Signal Trust for Wireless Innovation
During 2013, we announced the establishment of the Signal Trust for Wireless Innovation (the “Signal Trust”), the goal of which is to monetize a large InterDigital patent portfolio related to cellular infrastructure.
The more than 500 patents and patent applications transferred from InterDigital to the Signal Trust focus primarily on 3G and LTE technologies, and were developed by InterDigital's engineers and researchers over more than a decade, with a number of the innovations contributing to the worldwide standards process.
InterDigital is the primary beneficiary of the Signal Trust. The distributions from the Signal Trust will support continued research related to cellular wireless technologies.  A small portion of the proceeds from the Signal Trust will be used to fund, through the Signal Foundation for Wireless Innovation, scholarly analysis of intellectual property rights and the technological, commercial and creative innovations they facilitate.
The Signal Trust is a variable interest entity. Based on the terms of the trust agreement, we have determined that we are the primary beneficiary for accounting purposes and must consolidate the Signal Trust.

11.10. OTHER INCOME (NET)(EXPENSE), NET
The amounts included in "Other Income (Net)(Expense), Net" in the condensed consolidated statements of income for the three and six months ended June 30,March 31, 2020 and 2019 and 2018 were as follows (in thousands):
 
Three months ended
June 30,
 Six months ended June 30,
 2019 2018 2019 2018
Interest and investment income3,592

4,350
 7,488

7,273
Gain on asset acquisition14,175


 14,175


Loss on extinguishment of long-term debt(5,488)

 (5,488)

Other75

(237) (206)
(253)
Other income (net)$12,354
 $4,113
 $15,969
 $7,020
Refer to Note 7, "Business Combinations and Other Transactions," and Note 9, "Long-term Debt," for further information regarding the gain on asset acquisition and loss on extinguishment of long-term debt recognized during the three and six months ended June 30, 2019.

12. REVISION TO NONCONTROLLING INTEREST
As discussed in Note 1, "Basis of Presentation," we revised our prior period presentation of noncontrolling interest. The following tables present the effect of the revision on the consolidated statements of income, statements of comprehensive income, balance sheets and statements of shareholders' equity (in thousands, except per share data). The correction of this error has no impact to the previously reported consolidated statements of cash flows for any periods.


 Statements of Income and Statements of Comprehensive Income Impact
 Year Ended
 December 31,December 31,December 31,
 201620172018
Net loss attributable to noncontrolling interest - As Reported$3,521$3,579$4,393
Net loss attributable to noncontrolling interest - As Revised$5,261$5,506$5,556
    
Net income attributable to InterDigital, Inc. - As Reported$309,001$174,293$63,868
Net income attributable to InterDigital, Inc. - As Revised$310,741$176,220$65,031
    
Net income per common share, Basic - As Reported$8.95$5.04$1.85
Net income per common share, Basic - As Revised$9.00$5.09$1.89
    
Net income per common share, Diluted - As Reported$8.78$4.87$1.81
Net income per common share, Diluted - As Revised$8.83$4.93$1.84
    
Total comprehensive income attributable to InterDigital, Inc. - As Reported$308,665$172,724$63,929
Total comprehensive income attributable to InterDigital, Inc. - As Revised$310,405$174,651$65,092

 Statements of Income and Statements of Comprehensive Income Impact
 Three Months EndedSix Months EndedNine Months Ended
 March 31,June 30,September 30,December 31,June 30,September 30,
 201720172017201720172017
Net loss attributable to noncontrolling interest - As Reported$978$955$811$835$1,933$2,744
Net loss attributable to noncontrolling interest - As Revised$1,483$1,427$1,226$1,370$2,910$4,136
       
Net income attributable to InterDigital, Inc. - As Reported$33,756$52,499$35,536$52,502$86,255$121,791
Net income attributable to InterDigital, Inc. - As Revised$34,261$52,971$35,951$53,037$87,232$123,183
       
Net income per common share, Basic - As Reported$0.98$1.51$1.02$1.52$2.50$3.52
Net income per common share, Basic - As Revised$1.00$1.53$1.04$1.53$2.53$3.56
       
Net income per common share, Diluted - As Reported$0.93$1.46$1.00$1.48$2.39$3.40
Net income per common share, Diluted - As Revised$0.95$1.48$1.02$1.49$2.42$3.43
       
Total comprehensive income attributable to InterDigital, Inc. - As Reported$33,711$52,457$35,442$51,114$86,168$121,610
Total comprehensive income attributable to InterDigital, Inc. - As Revised$34,216$52,929$35,857$51,649$87,145$123,002

 Statements of Income and Statements of Comprehensive Income Impact
 Three Months EndedSix Months EndedNine Months Ended
 March 31,June 30,September 30,December 31,June 30,September 30,
 201820182018201820182018
Net loss attributable to noncontrolling interest - As Reported$1,196$930$1,297$970$2,126$3,423
Net loss attributable to noncontrolling interest - As Revised$1,501$1,190$1,642$1,223$2,691$4,333
       
Net income attributable to InterDigital, Inc. - As Reported$29,925$10,706$21,407$1,830$40,631$62,038
Net income attributable to InterDigital, Inc. - As Revised$30,230$10,966$21,752$2,083$41,196$62,948
       
Net income per common share, Basic - As Reported$0.86$0.31$0.62$0.05$1.17$1.79
Net income per common share, Basic - As Revised$0.87$0.32$0.63$0.06$1.19$1.81
       
Net income per common share, Diluted - As Reported$0.84$0.30$0.60$0.05$1.14$1.74
Net income per common share, Diluted - As Revised$0.85$0.31$0.61$0.06$1.16$1.77
       
Total comprehensive income attributable to InterDigital, Inc. - As Reported$28,178$11,082$21,874$2,795$39,260$61,134
Total comprehensive income attributable to InterDigital, Inc. - As Revised$28,483$11,342$22,219$3,048$39,825$62,044

 Balance Sheets and Statements of Shareholders' Equity Impact
 December 31,December 31,March 31,June 30,September 30,December 31,
 201620172018201820182018
Retained earnings - As Reported$1,120,766$1,249,091$1,428,437$1,426,888$1,436,171$1,426,266
Retained earnings - As Revised$1,127,380$1,257,632$1,437,283$1,435,994$1,445,622$1,435,970
       
Total InterDigital, Inc. shareholders’ equity - As Reported$739,709$855,267$1,019,047$1,020,469$1,000,591$927,025
Total InterDigital, Inc. shareholders’ equity - As Revised$746,323$863,808$1,027,893$1,029,575$1,010,042$936,729
       
Noncontrolling interest - As Reported$14,659$17,881$16,685$15,755$14,458$10,988
Noncontrolling interest - As Revised$8,045$9,340$7,839$6,649$5,007$1,284
       
Total equity - As Reported$754,368$873,148$1,035,732$1,036,224$1,015,049$938,013
Total equity - As Revised$754,368$873,148$1,035,732$1,036,224$1,015,049$938,013
 Three months ended March 31,
 2020 2019
Interest and investment income$2,877

$3,152
Other3,146

463
Other income (expense), net$6,023
 $3,615




13. SUBSEQUENT EVENTS
On July 19, 2019, we completed the saleThe change in other income (expense) between periods was primarily driven by a net $4.4 million gain, primarily resulting from observable price changes in orderly transactions of one of our Hillcrest Laboratories, Inc. business to a subsidiary of CEVA, Inc. As part of the transaction, we retained substantially all of the patent assets that we acquired in 2016. Certain assets held for sale in the amount of $3.1 million as of June 30, 2019 were comprised of intangible assets, inventory, a limited number of patents, right-of-use operating lease assets, and property and equipment. Certain liabilities held for sale in the amount of $0.7 million as of June 30, 2019 were comprised of operating lease liabilities. These assets and liabilities were reflected as current assets and current liabilities within "Prepaid and other current assets" and "Other accrued expenses," respectively, in the condensed consolidated balance sheet. The Company expects to record a gain on the sale of the Hillcrest Laboratories, Inc. business in third quarter 2019.long-term strategic investments.
Item 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.
OVERVIEW
The following discussion should be read in conjunction with the unaudited, condensed consolidated financial statements and notes thereto contained in Part I, Item 1 of this Quarterly Report on Form 10-Q, in addition to our 20182019 Form 10-K, other reports filed with the SEC and the Statement Pursuant to the Private Securities Litigation Reform Act of 1995 — Forward-Looking Statements below.
Throughout the following discussion and elsewhere in this Form 10-Q, we refer to “recurring revenues” and “non-recurring revenues.”  Recurring revenues are comprised of “current patent royalties” and “current technology solutions revenue.”  Non-recurring revenues are comprised of “non-current patent royalties,” which primarily include past patent royalties and royalties from static agreements, as well as “patent sales.”
Acquisition of Technicolor's Research & Innovation UnitNew Agreements
On May 31, 2019,During first quarter 2020, we completedsigned two new patent license agreements which impacted revenue in our mobile and video technologies portfolios.
Subsequent to the acquisitionend of the R&Ifirst quarter 2020, we signed a multi-year, worldwide, non-exclusive, fixed-fee patent license agreement with Huawei Investment & Holding Co., Ltd. ("Huawei”), one of the world’s leaders in the information and communications technology industry. The Agreement covers the sale of certain of Huawei's 3G, 4G and 5G terminal unit products, including the use of Technicolor SA. R&I is a premier research lab that conducts fundamental research into video coding, IoTWi-Fi and smart home, imaging sciences, augmented realityHEVC in those products, and virtual reality,extends through December 31, 2023. InterDigital and artificial intelligence and machine learning technologies.
As consideration for the acquisition, the partiesHuawei have also agreed to terminatedismiss all pending litigation between the jointly funded R&D collaboration that was entered intocompanies as part of the Technicolor Acquisition. In addition, InterDigital has assumed certain employment related obligationsmore fully discussed in Note 5, "Litigation and Technicolor has agreed to reduce its rights to a revenue-sharing arrangement announced as part of the Technicolor Acquisition. There is no cash consideration. Refer to Note 7, "Legal ProceedingsBusiness Combinations and Other Transactions" in the Notes to the Consolidated Financial Statements included in Part I, Item 1" of this Quarterly Report on Form 10-Q for further discussion on10-Q.
Impact of COVID-19 Pandemic
In March 2020, the acquisition.

2024 Senior Convertible Notes

On June 3, 2019, we issuedWorld Health Organization categorized the $400.0 million aggregate principal 2024 Notes. The net proceeds fromnovel coronavirus ("COVID-19") as a pandemic, and it continues to significantly impact the offeringUnited States and the rest of the 2024 Notes were approximately $391.6 million after deductingworld. Though the initial purchasers' feesCOVID-19 pandemic and estimated offering expenses. Additionally, on May 29the measures taken to reduce its transmission, such as the imposition of social distancing and May 31, 2019,orders to work-from-home and shelter-in-place, have altered our business environment and overall working conditions, we continue to believe that our strategic strengths, including talent, our strong balance sheet, stable revenue base, and the strength of our patent portfolio, will allow us to weather a rapidly changing marketplace.
While the environment in connection with the offeringwhich we conduct our business and our overall working conditions have changed as a result of the 2024 Notes,COVID-19 pandemic, we entered into the 2024 Call Spread Transactions.
The net proceeds from the issuance of the 2024 Notes, after deducting feesexperienced a limited impact on our operations and offering expenses, were usedfinancial position during first quarter 2020. As discussed in our 2019 Form 10-K, fixed-fee royalties accounted for the following: (i) $232.7 million was used to repurchase $221.1 million in aggregate principal amount of the 2020 Notes in privately negotiated transactions concurrently with the offering of the 2024 Notes (ii) $19.6 million was used to repurchase shares of common stock at $62.53 per share, the closing price of the stock on May 29, 2019; and (iii) $24.4 million, in addition to the proceeds from the 2024 Warrant Transactions, was used to fund the cost of the 2024 Call Spread Transactions.

The 2024 Notes will be convertible into cash, sharesnearly 90% of our common stock or a combination thereof, atrevenues in 2019. These fixed-fee revenues are not directly affected by our election, at an initial conversion rate of 12.3018 shares of common stock per $1,000 principal amount of 2024 Notes (which is equivalent to an initial conversion price of approximately $81.29 per share), as adjusted pursuant to the terms of the Indenture.

Refer to Note 9, “Long-Term Debtrelated licensees’ success in the Notesmarket or the general economic climate. To that end, in first quarter 2020, we did not experience a significant impact on our revenue due to Condensed Consolidated Financial Statements includedCOVID-19. Meanwhile, we have taken steps to protect the health and safety of our employees and their families, with our entire worldwide workforce now working remotely. Despite these remote working conditions, our business activities have continued to operate with minimal interruption, and we expect them to continue to operate efficiently. All work-related travel has been suspended, and we have conducted our licensing negotiations, investor presentations and participation in standards organizations and industry events virtually. Our

financial position remains strong, we have sufficient access to capital if needed, and we remain committed to our efforts around cost discipline.
Despite our success thus far in navigating the challenging environment that COVID-19 has presented, as more fully discussed in Part I,II, Item 1 of1A "Risk Factors" in this Quarterly Report on Form 10-Q, for further discussionthe extent to which COVID-19 will adversely impact our business, financial condition and results of operations is dependent upon numerous factors resulting therefrom, many of which are highly uncertain, rapidly changing and uncontrollable. However, with a strong balance sheet and the 2024 Notesvast majority of our current revenue coming from fixed price agreements, we believe that we are well-positioned to continue to overcome and related 2024 Call Spread Transactions.adapt to the challenges that we have been presented with thus far.

Recurring Revenue
SecondFirst quarter 20192020 recurring revenue was $74.4$75.5 million compared to $67.5$74.2 million in secondfirst quarter 2018,2019, with the increase primarily driven by an increase in fixed-fee royalty revenues as a result of new license agreements signed in 2018 andincreases from the inclusion of engineering services revenue from the Technicolor Acquisition.related to our on-going relationship with Technicolor. Refer to "Results"Results of Operations -- SecondFirst Quarter 20192020 Compared to SecondFirst Quarter 2018"2019" for further discussion of our 20192020 revenue.
New Accounting Guidance
In February 2016, the FASB issued ASC 842, which outlines a comprehensive change to the lease accounting model and supersedes prior lease guidance (ASC 840). The new guidance requires lessees to recognize lease liabilities and corresponding right-of-use assets for all leases with lease terms of greater than 12 months, and also changes the definition of a lease and expands the disclosure requirements of lease arrangements. The Company adopted this guidance on January 1, 2019 using the modified retrospective transition effective date method, and upon adoption reflected $13.6 million of right-of-use assets and $17.2 million of lease liabilities within the condensed consolidated balance sheet. The adoption did not have a material impact on the Company's condensed consolidated statements of income or cash flows.
Share Repurchase Program
During the six months ended June 30, 2019, we repurchased 2.5 million shares of our common stock for $171.3 million under our existing share repurchase program (the “2014 Repurchase Program”). On May 29, 2019, we announced that our Board of Directors authorized a $100 million increase to the 2014 Repurchase Program. The Board authorized a $300 million stock repurchase program in June 2014, which was increased to $400 million in June 2015, to $500 million in September 2017, and then to $600 million in December 2018.  This latest increase brings the total authorization to $700 million. As of June 30, 2019, there was approximately $96.8 million remaining under the 2014 Repurchase Program.
Comparability of Financial Results
When comparing secondfirst quarter 20192020 financial results against other periods, the following items should be taken into consideration:
the acquisition of the R&I unit of Technicolor SA resulted in a net gain of approximately $14.2 million, inclusive of a $20.5 million gain from the derecognition of a contingent consideration liability, all of which is included within “Other Income (Net)” within our condensed consolidated statement of income;
the Technicolor Patent Acquisition and the acquisition of the R&I unit of Technicolor SA,Acquisition, which closed on July 30, 2018 and May 31, 2019, respectively, contributed $3.6$5.2 million to our secondfirst quarter 20192020 revenue and $13.2$15.4 million to our secondfirst quarter 20192020 operating expenses. The $15.4 million of operating expenses including $1.7is comprised of $14.7 million of recurring costs, of which $4.2 million relates to patent amortization, and the remaining $0.7 million relates to transaction-related and integration costs;
a net $4.4 million gain, primarily resulting from observable price changes in orderly transactions of one of our long-term strategic investments, is recorded within the Other Income (Expense), net; and
in connection with the offering of the 2024 Notes, we repurchased approximately $221.1 million in aggregate principal amount of our 2020 Notes, which resulted in the recognition of a $5.5 million loss on extinguishment of debt that is included in "Other Income (Net)" within our condensed consolidated statement of income.
a $1.1 million impairment charge related to shutting down our San Diego office is recorded within our operating expenses.
CRITICAL ACCOUNTING POLICIES AND ESTIMATES
Our significant accounting policies are described in Note 2 of the Notes to Consolidated Financial Statements included in our 20182019 Form 10-K. A discussion of our critical accounting policies, and the estimates related to them, are included in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our 20182019 Form 10-K. There have been no material changes to our existing critical accounting policies from the disclosures included in our 20182019 Form 10-K. Refer to Note 1, “Basis of Presentation,” in the Notes to Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q for updates related to new accounting pronouncements and changes in accounting policies.
FINANCIAL POSITION, LIQUIDITY AND CAPITAL RESOURCES
Our primary sources of liquidity are cash, cash equivalents and short-term investments, as well as cash generated from operations. We believe we have the ability to obtain additional liquidity through debt and equity financings. Based on our past performance and current expectations, we believe our available sources of funds, including cash, cash equivalents and short-term investments and cash generated from our operations, will be sufficient to finance our operations, capital requirements, debt obligations, (including the repayment of the remaining $94.9 million of our 2020 Notes), existing stock repurchase program and dividend program for the next twelve months.


Cash, cash equivalents, restricted cash and short-term investments
As of June 30, 2019March 31, 2020, and December 31, 20182019, we had the following amounts of cash, cash equivalents, restricted cash and short-term investments (in thousands):
June 30, 2019 December 31, 2018 
Increase /
(Decrease)
March 31, 2020 December 31, 2019 
Increase /
(Decrease)
Cash and cash equivalents$531,698
 $475,056
 $56,642
$515,793
 $745,491
 $(229,698)
Restricted cash included within prepaid and other current assets11,465
 13,677
 (2,212)12,851
 10,526
 2,325
Restricted cash included within other non-current assets1,081
 1,081
 
Short-term investments299,461
 470,724
 (171,263)265,107
 179,204
 85,903
Total cash, cash equivalents, restricted cash and short-term investments$842,624
 $959,457
 $(116,833)$794,832
 $936,302
 $(141,470)
The net decrease in cash, cash equivalents, restricted cash and short-term investments was attributable to cash used in financing activities of $46.6$106.0 million, primarily related to share repurchases,the repayment of our 2020 Notes and dividend payments, and cash payments for payroll taxes upon vesting of restricted stock units, partially offset by net proceeds from the debt refinancing and related expenses in second quarter 2019 and proceeds received from non-controlling interests.payments. Cash used in investing activities of $20.7$7.9 million, excluding sales and purchases of short-term investments, primarily related to capital investments for patents and fixed assets. Cashassets and cash used in operating activities of $53.5$26.9 million further contributed to the decrease. Refer to the sections below for further discussion of these items.
Cash flows from operations
We generated (used) the following cash flows in our operating activities in first half 2019quarter 2020 and 20182019 (in thousands):
 Six months ended June 30,
 2019
2018
Increase /
(Decrease)
Net cash provided by (used in) operating activities$(53,523) $6,232
 $(59,755)
 Three months ended March 31,
 2020
2019
Increase /
(Decrease)
Net cash used in operating activities$(26,885) $(30,781) $3,896
Our cash flows provided by (used in)used in operating activities are principally derived from cash receipts from patent license and technology solutions agreements, offset by cash operating expenses and income tax payments. The $59.8$3.9 million increasechange in net cash used in operating activities was primarily driven by lower cash receipts in first half 2019 as compared to first half 2018 related to timing of cash receipts from our dynamic fixed-fee royalty agreements.differences associated with working capital. The table below sets forth the significant items comprising our cash flows provided by (used in) operating activities during the sixthree months June 30,ended March 31, 2020 and 2019 and 2018 (in thousands).
Six months ended June 30,Three months ended March 31,
2019 2018 Increase / (Decrease)2020 2019 Increase / (Decrease)
Cash Receipts:          
Patent royalties$59,769
 $90,696
 $(30,927)$33,464
 $34,363
 $(899)
Technology solutions1,431
 8,439
 (7,008)973
 639
 334
Total cash receipts61,200
 99,135
 (37,935)34,437
 35,002
 (565)
          
Cash Outflows:          
Cash operating expenses a
92,911
 79,194
 13,717
49,264
 47,461
 1,803
Income taxes paid b
9,770
 10,799
 (1,029)2,228
 3,196
 (968)
Total cash outflows102,681
 89,993
 12,688
51,492
 50,657
 835
          
Other working capital adjustments(12,042) (2,910) (9,132)(9,830) (15,126) 5,296
          
Cash flows provided by (used in) operating activities$(53,523) $6,232
 $(59,755)
Cash flows used in operating activities$(26,885) $(30,781) $3,896
                                   
(a) Cash operating expenses include operating expenses include operating expenses less depreciation of fixed assets, amortization of patents, non-cash compensation and non-cash changes in fair value.
(b) Income taxes paid include foreign withholding taxes.

Working capital
We believe that working capital adjusted to exclude cash, cash equivalents, restricted cash and short-term investments and to include current deferred revenue provides additional information about non-cash assets and liabilities that might affect our near-term liquidity. While we believe cash and short-term investments are important measures of our liquidity, the remaining components of our current assets and current liabilities, with the exception of deferred revenue, could affect our near-term liquidity and/or cash flow. We have no material obligations associated with our deferred revenue, and the amortization of deferred revenue has no impact on our future liquidity and/or cash flow. Our adjusted working capital, a non-GAAP financial measure, reconciles to working capital, the most directly comparable GAAP financial measure, as of June 30, 2019 and December 31, 2018 (in thousands), as follows:
 June 30,
2019
 December 31, 2018 Increase / (Decrease)
Current assets$940,998
 $1,024,250
 $(83,252)
Less: current liabilities
242,898
 179,395
 63,503
Working capital698,100
 844,855
 (146,755)
Subtract:     
Cash and cash equivalents531,698
 475,056
 56,642
Restricted cash11,465
 13,677
 (2,212)
Short-term investments299,461
 470,724
 (171,263)
Add:     
Current deferred revenue82,575
 111,672
 (29,097)
Adjusted working capital$(61,949) $(2,930) $(59,019)

The $59.0 million increase in negative adjusted working capital is primarily attributable to the classification of our remaining outstanding 2020 Notes, which are due March 2020, as a current liability within the June 30, 2019 condensed consolidated balance sheet, which was partially offset by an increase in accounts receivable due to payments contractually due to us under certain of our dynamic fixed-fee royalty agreements.

Cash flows from investing and financing activities
Net cash provided byused in investing activities in first half 2019quarter 2020 was $154.5$94.5 million, a $32.0 million increase($267.6 million) change from $122.5 million($173.0 million) net cash provided by investing activities in first half 2018. We sold $175.2quarter 2019. During first quarter 2020, we purchased $86.7 million of short-term marketable securities, net of purchases, insales. During first halfquarter 2019, as compared to sales,we sold $183.1 million of short-term marketable securities, net of purchases, of $147.0 million in first half 2018.purchases.
Net cash used in financing activities for first half 2019quarter 2020 was $46.6$106.0 million, an $8.6a decrease of $8.4 million increase from $37.9net cash used in financing activities of $114.4 million infor first half 2018.quarter 2019. This change was primarily attributable to a $162.1$108.6 million increasedecrease in repurchases of common stock, and a $3.9 million decrease in proceeds received from the exercise of stock options, which were partially offset by net proceeds of $141.3 million from the debt refinancing (net of related expenses) in second quarter 2019. Additionally, first half 2019 included a $10.3 million increase in proceeds received from noncontrolling interests, as well as a $4.3$3.4 million decrease in payroll taxes paid upon the vesting of restricted stock units. TheThese and other increases in cash were offset by a $94.9 million payment on long-term debt related to the repayment of our 2020 Notes and a $10.3 million decrease in payroll taxes was driven by both a lower share price upon vesting date as well as a lower number of restricted stock units vested in first six months 2019 as compared to the number of restricted stock units that vested in the first six months 2018.proceeds from noncontrolling interests.
Other
Our combined short-term and long-term deferred revenue balance as of June 30, 2019March 31, 2020 was approximately $204.1$230.8 million, a net decrease of $65.3$39.5 million from December 31, 2018.2019. This decrease in deferred revenue was primarily comprisedattributable to amortization of deferred revenue recognizedand timing of cash receipts from amortizedour dynamic fixed-fee royalty payments.agreements.
Based on current license agreements, we expect the amortization of dynamic fixed-fee royalty payments to reduce the June 30, 2019March 31, 2020 deferred revenue balance of $204.1$230.8 million by $82.6$126.3 million over the next twelve months.
Convertible Notes
See Note 8, “Long-Term Debt” to the Notes to Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q for definitions of capitalized terms below.
Our 2024 Notes and 2020 Notes, which for purposes of this discussion we referare also referred to as the combined "Convertible Notes", are included in the dilutive earnings per share calculation using the treasury stock method. Under the treasury stock method, we must calculate the number of shares of common stock issuable under the terms of the Convertible Notes based on

the average market price of our common stock during the applicable reporting period and include that number in the total diluted shares figure for the period. At the time we issued the Convertible Notes, we entered into the 2024 Call Spread Transactions and 2020 Call Spread Transactions that together were designed to have the economic effect of reducing the net number of shares that will be issued in the event of conversion of the Convertible Notes by, in effect, increasing the conversion price of the Convertible Notes from our economic standpoint. However, under GAAP, since the impact of the 2024 Note Hedge Transactions and 2020 Note Hedge Transactions (together, the "Note Hedge Transactions") is anti-dilutive, we exclude from the calculation of fully diluted shares the number of shares of our common stock that we would receive from the counterparties to these agreements upon settlement.
During periods in which the average market price of the Company'sour common stock is above the applicable conversion price of the Convertible Notes ($81.29 per share for the 2024 Notes and $71.01 per share for the 2020 Notes as of June 30, 2019)March 31, 2020) or above the strike price of the warrants ($109.43 per share for the 2024 Warrant Transactions and $86.79 per share for the 2020 Warrant Transactions as of June 30, 2019)March 31, 2020), the impact of conversion or exercise, as applicable, would be dilutive and such dilutive effect is reflected in diluted earnings per share. As a result, in periods where the average market price of the Company'sour common stock is above the conversion price or strike price, as applicable, under the treasury stock method, the Company calculateswe calculate the number of shares issuable under the terms of the Convertible Notes and the warrants based on the average market price of the stock during the period, and includes that number in the total diluted shares outstanding for the period.
Under the treasury stock method, changes in the price per share of our common stock can have a significant impact on the number of shares that we must include in the fully diluted earnings per share calculation. As described in Note 9,8, "Long-Term Debt," it is our current intent and policy to settle all conversions of the Convertible Notes through a combination settlement of cash and shares of common stock, with a specified dollar amount of $1,000 per $1,000 principal amount of the Convertible Notes and any remaining amounts in shares ("net share settlement"). Assuming net share settlement upon conversion, the following table illustrates how, based on the $400.0 million aggregate principal amount of the 2024 Notes and the $94.9 million remaining aggregate principal amount of the 2020 Notes as of June 30, 2019,March 31, 2020, and the approximately 4.9 million warrants related to the 2024 Notes and the 1.3 million remaining warrants related to the 2020 Notes outstanding as of the same date, changes in our stock price would affect (i) the number of shares issuable upon conversion of the Convertible Notes, (ii) the number of shares issuable upon exercise of the warrants subject to the 2024 Warrant Transactions, and 2020 Warrant Transactions (together, the "Warrant Transactions"), (iii) the number of additional shares deemed outstanding with respect to the Convertible Notes, after applying the treasury stock method, for purposes of calculating diluted earnings per share ("Total Treasury Stock Method Incremental Shares"), (iv) the number of shares of common stock deliverable to us upon settlement of the 2024 Note Hedge Transactions and (v) the number of shares issuable upon concurrent conversion of the Convertible Notes, exercise of the warrants subject to the 2024 Warrant Transactions, and settlement of the 2024 Note Hedge Transactions:
2024 Notes
Market Price Per ShareShares Issuable Upon Conversion of the 2024 NotesShares Issuable Upon Exercise of the 2024 Warrant TransactionsTotal Treasury Stock Method Incremental SharesShares Deliverable to InterDigital upon Settlement of the 2024 Note Hedge Transactions
Incremental Shares Issuable (a) 
 (Shares in thousands)
$85215215(215)
$90476476(476)
$95710710(710)
$100921921(921)
$1051,1111,111(1,111)
$1101,284251,309(1,284)25
$1151,4422381,680(1,442)238
$1201,5874332,020(1,587)433
$1251,7216132,334(1,721)613
$1301,8447792,623(1,844)779

2020 Notes
2024 Notes2024 Notes
Market Price Per ShareShares Issuable Upon Conversion of the 2020 NotesShares Issuable Upon Exercise of the 2020 Warrant TransactionsTotal Treasury Stock Method Incremental SharesShares Deliverable to InterDigital upon Settlement of the 2020 Note Hedge Transactions
Incremental Shares Issuable (a) 
Shares Issuable Upon Conversion of the 2024 NotesShares Issuable Upon Exercise of the 2024 Warrant TransactionsTotal Treasury Stock Method Incremental SharesShares Deliverable to InterDigital upon Settlement of the 2024 Note Hedge Transactions
Incremental Shares Issuable (a) 
(Shares in thousands)(Shares in thousands)
$757171(71)
$80150150(150)
$85220220(220)215215(215)
$9028248330(282)48476476(476)
$95337115452(337)115710710(710)
$100387177564(387)177921921(921)
$105433232665(433)2321,1111,111(1,111)
$110474282756(474)2821,284251,309(1,284)25
$115511328839(511)3281,4422381,680(1,442)238
$120546370916(546)3701,5874332,020(1,587)433
$1251,7216132,334(1,721)613
$1301,8447792,623(1,844)779
(a) Represents incremental shares issuable upon concurrent conversion of convertible notes, exercise of warrants and settlement of the hedge agreements.
RESULTS OF OPERATIONS
SecondFirst Quarter 20192020 Compared to SecondFirst Quarter 20182019
Revenues
The following table compares secondfirst quarter 20192020 revenues to secondfirst quarter 20182019 revenues (in thousands):
        
Three months ended June 30,    Three months ended March 31,    
2019 2018  Total Increase/(Decrease)2020 2019  Total Increase/(Decrease)
Variable patent royalty revenue$8,594
 $6,594
 $2,000
 30 %$5,946
 $9,280
 $(3,334) (36)%
Fixed-fee royalty revenue63,736
 60,264
 3,472
 6 %66,347
 62,873
 3,474
 6 %
Current patent royalties a
72,330
 66,858
 5,472
 8 %72,293
 72,153
 140
  %
Non-current patent royalties b
1,237
 2,017
 (780) (39)%705
 (5,775) 6,480
 112 %
Total patent royalties73,567
 68,875
 4,692
 7 %72,998
 66,378
 6,620
 10 %
Current technology solutions revenue a
2,042
 680
 1,362
 200 %3,212
 2,028
 1,184
 58 %
Patent sales b

 
 
  %
 225
 (225) (100)%
Total revenue$75,609
 $69,555
 $6,054
 9 %$76,210
 $68,631
 $7,579
 11 %
                                   
a.Recurring revenues are comprised of current patent royalties, inclusive of Dynamic Fixed-Fee Agreement royalties, and current technology solutions revenue.
b.Non-recurring revenues are comprised of non-current patent royalties, which primarily include past patent royalties and royalties from static agreements, as well as patent sales.
The $6.1$7.6 million increase in total revenue was driven by a increase in fixed-fee royalties, primarily resulting from new agreements signed in second half 2018. The increase in variable patent royalties was primarily driven by the inclusion of a $5.5 million net charge recorded as contra non-recurring revenue from agreements assumedduring first quarter 2019 related to a restructured licensing arrangement with a long-term customer. First quarter 2020 recurring revenue of $75.5 million increased $1.3 million as part of the Technicolor Acquisition. Currentcompared to $74.2 million in first quarter 2019, and was driven by increases in current technology solutions related inclusion of engineering services revenue related to our on-going relationship with Technicolor. Fixed-fee royalty revenue increased $1.4 million due to the renewal of a license agreement with an existing customer. The decrease in non-current patent royalties was primarily due to new Dynamic Fixed-Fee Agreementsagreements signed during secondin fourth quarter 2018.2019. These increases were partially offset by a decrease in variable patent royalty revenue of $3.3 million which was attributable to anticipated volume decreases related to the COVID-19 pandemic and the transition of certain patent agreements from variable to fixed fee, among other drivers.

In secondfirst quarter 2020 and first quarter 2019, 73% and second quarter 2018, 75% and 79%83% of our total revenue, respectively, was attributable to companies that individually accounted for 10% or more of our total revenue. In secondfirst quarter 20192020 and secondfirst quarter 2018,2019, the following companies accounted for 10% or more of our total revenue:
Three months ended June 30,Three months ended March 31,
2019 20182020 2019
Apple37% 40%37% 41%
Samsung26% 28%26% 29%
LG12% 11%10% 13%
Operating Expenses
The following table summarizes the changes in operating expenses between secondfirst quarter 20192020 and secondfirst quarter 20182019 by category (in thousands):
Three months ended June 30,    Three months ended March 31,    
2019 2018 Increase/(Decrease)2020 2019 Increase/(Decrease)
Patent administration and licensing$37,353
 $26,487
 $10,866
 41%$40,108
 $36,071
 $4,037
 11 %
Development17,027
 15,829
 1,198
 8%18,818
 18,495
 323
 2 %
Selling, general and administrative12,314
 11,559
 755
 7%12,603
 14,215
 (1,612) (11)%
Total operating expenses$66,694
 $53,875
 $12,819
 24%$71,529
 $68,781
 $2,748
 4 %
Operating expenses increased to $66.7$71.5 million in secondfirst quarter 20192020 from $53.9$68.8 million in secondfirst quarter 2018.2019. The $12.8$2.7 million increase in total operating expenses was primarily due to changes in the following items (in thousands):
 
Increase/
(Decrease)

Technicolor Acquisitions: Recurring costs$11,481
Personnel-related costs1,104
Other1,435
Intellectual property enforcement and non-patent litigation(1,201)
Total increase in operating expenses$12,819

 Increase/(Decrease)
Recurring operations of the Technicolor Acquisitions$5,591
One-time costs related to the Technicolor Acquisitions(2,337)
Personnel-related costs, including performance-based compensation(3,052)
Corporate Initiatives1,952
Other594
Total increase in operating expenses$2,748
The $12.8$2.7 million increase in operating expenses was primarily driven by the Technicolor Patent Acquisition, which closed in July 2018 and was integrated throughout 2019, and the acquisition of the R&I unit of Technicolor SAAcquisition, which closed May 2019 (together, the "Technicolor Acquisitions"), whichand contributed $13.2$15.4 million to our secondfirst quarter 20192020 operating expenses. The $13.2$15.4 million of operating expenses is comprised of $11.5$14.7 million of recurring costs, as noted above, of which $4.2 million and $1.7 million relaterelates to patent amortization, and the remaining $0.7 million relates to transaction and integration costs, respectively.costs. This compares to $3.9$12.1 million of operating expenses in first quarter 2019, which was comprised of $9.1 million of recurring costs, and the remaining $3.0 million related to transaction and integration costs in secondcosts.
During first quarter 2018.

The increase in personnel-related costs was primarily related2020 the company incurred a $2.0 million charge attributable to severance and related expenses associated withcorporate initiatives as part of its ongoing efforts to optimize our cost structure. The $1.2 million decreasestructure, including the closing of our San Diego office. This and other increases were offset by savings in intellectual property enforcement and non-patent litigation was primarily due to decreased activity related to existing licensee disputes. personnel-related costs resulting from such efforts.
Patent Administration and Licensing Expense: The increase in patent administration and licensing expense primarily resulted from the above-noted increases related to the Technicolor Acquisitions. These increases were partially offset by decreased intellectual property enforcement and non-patent litigationPatent Acquisition and patent amortization expense.maintenance.
Development Expense: The increase in development expense primarily related to costs associated with the jointly funded R&D collaboration with Technicolorabove-noted increases resulting from the R&I Acquisition and increased personnel-related expenses, as discussed above.was mostly offset by second quarter 2019 sale of the Hillcrest product business and reductions in other non-cellular research areas.
Selling, General and Administrative Expense: The slight increasedecrease in selling, general and administrative expense was primarily resulted from the above-noted increases relateddue to the Technicolor Acquisitions and increasedlower personnel-related costs, as well as increased consulting services primarily related to spending on corporate initiatives.partially offset by one-time charges in the period.


Non-Operating Income (Expense)
The following table compares secondfirst quarter 20192020 non-operating income (expense) to secondfirst quarter 20182019 non-operating income (expense) (in thousands):
Three months ended
June 30,
    Three months ended March 31,    
2019 2018 Change2020 2019 Change
Interest expense$(9,907) $(8,960) $(947) (11)%$(10,545) $(9,478) $(1,067) (11)%
Interest and investment income3,592
 4,350
 (758) (17)%2,877
 3,152
 (275) (9)%
Gain on asset acquisition14,175
 
 14,175
  %
Loss on extinguishment of long-term debt(5,488) 
 (5,488)  %
Other income (expense)75
 (237) 312
 132 %
Other income (expense), net3,146
 463
 2,683
 (579)%
Total non-operating income (expense)$2,447
 $(4,847) $7,294
 150 %$(4,522) $(5,863) $1,341
 23 %
The change in non-operating income (expense) between periods was primarily driven by the recognition of a net $4.4 million unrealized gain, primarily resulting from observable price changes in orderly transactions of $14.2 million related to the Technicolor R&I acquisition in second quarter 2019. This gain wasone of our long-term strategic investments, partially offset by the recognition of a $5.5 million loss on extinguishment of debt recognized in connection with the settlement of a portion of our 2020 Notes in second quarter 2019, higher interest expense related to the 2024 Notes, and interest incurred on long-term debt resulting from the Technicolor Acquisition.

Income taxes
In2024 Notes. We realized nearly one-half of that gain when we sold nearly on-half of our investment in early second quarter 2019, based on the statutory federal tax rate net of discrete federal and state taxes, we had an effective tax rate of 43.9%. The second quarter 2019 rate was impacted by losses in certain jurisdictions where the Company presently has recorded a valuation allowance against the related tax benefit. In second quarter 2019, the Company recorded a net discrete tax expense of $3.4 million related to both the acquisition of the R&I unit of Technicolor SA and the extinguishment of long-term debt recognized during second quarter 2019. This is compared to an effective tax rate of 9.8% based on the statutory federal tax rate net of discrete federal and state taxes during second quarter 2018.
On December 22, 2017, the Tax Reform Act was signed into law. The Tax Reform Act imposes a 13.125% tax rate on income that qualifies as FDII. The reduction in benefit is primarily related to the differences in our FDII deduction between the periods. The difference in the FDII deduction between the periods was driven by the timing of income between book and tax mostly related to revenue recognition. On March 6, 2019, the IRS issued proposed regulations for FDII. The Company is currently evaluating the impact of the proposed regulations and will record the impact, if any, as applicable. 
First Half 2019 Compared to First Half 2018
Revenues
The following table compares first half 2019 revenues to first half 2018 revenues (in thousands):
 For the Six Months Ended June 30,    
 2019 2018  Total Increase/(Decrease)
Variable patent royalty revenue$17,874
 $12,677
 $5,197
 41 %
Fixed-fee royalty revenue126,609
 117,935
 8,674
 7 %
Current patent royalties (a)144,483
 130,612
 13,871
 11 %
Non-current patent royalties (b)(4,538) 25,361
 (29,899) (118)%
Total patent royalties139,945
 155,973
 (16,028) (10)%
Current technology solutions revenue (a)4,070
 1,026
 3,044
 297 %
Patent Sales225
 
 225
  %
Total revenue$144,240
 $156,999
 $(12,984) (8)%

(a)Recurring revenues consist of current patent royalties, inclusive of Dynamic Fixed-Fee Agreement royalties, and current technology solutions revenue.
(b)Non-current patent royalties for the six months ended June 30, 2019 consist of past patent royalties and royalties from static agreements. For the six months ended June 30, 2018, non-current patent royalties consist of past patent royalties.
The $13.0 million decrease in total revenue was driven by a decrease in non-current patent royalties, primarily resulting from new agreements signed in the first half 2018, as well as $5.5 million net charge recorded as contra non-recurring revenue during first quarter 2019 related to a restructured licensing arrangement with a long-term customer. The decrease in non-current patent royalties was partially offset by a $8.7 million increase in fixed fee royalties resulting primarily from new dynamic fixed-fee agreements during 2018. The increase in variable patent royalties was primarily driven by inclusion of revenue from agreements assumed as part of the Technicolor Acquisition. Current technology solutions revenue increased $3.0 million due to the renewal of a license agreement with an existing customer.
In first half 2019 and first half 2018, 79% and 71% of our total revenue, respectively, was attributable to companies that individually accounted for 10% or more of our total revenue. In first half 2019 and first half 2018, the following companies accounted for 10% or more of our total revenue:
 Six months ended June 30,
 2019 2018
Apple39% 36%
Samsung27% 25%
LG13% 10%

Operating Expenses
The following table summarizes the changes in operating expenses between first half 2019 and first half 2018 by category (in thousands):
 Six months ended June 30,  
 2019 2018 Increase/(Decrease)
Patent administration and licensing$73,424
 $53,403
 $20,021
 37%
Development35,522
 32,003
 3,519
 11%
Selling, general and administrative26,529
 25,763
 766
 3%
Total operating expenses$135,475
 $111,169
 $24,306
 22%
Operating expenses increased 22% to $135.5 million in first half 2019 from $111.2 million in first half 2018. The $24.3 million increase in total operating expenses was primarily due to changes in the following items (in thousands):
 Increase/(Decrease)
Technicolor Acquisitions: Recurring costs$20,591
Personnel-related costs4,679
Technicolor Acquisitions: Transaction and integration costs960
Intellectual property enforcement and non-patent litigation(1,721)
Other(203)
Total increase in operating expenses$24,306
The $24.3 million increase in operating expenses was primarily driven by the Technicolor Acquisitions, which contributed $25.4 million to our first half 2019 operating expenses. The $25.4 million of operating expenses is comprised of $20.6 million of recurring costs, as noted above, of which $8.3 million relates to patent amortization. We incurred an additional $4.8 million of one-time transaction and integration costs during first half 2019 which was an increase of $1.0 million over such costs incurred in first half 2018.


The increase in personnel-related costs was primarily related to severance and related expenses associated with ongoing efforts to optimize our cost structure. The $1.7 million decrease in intellectual property enforcement and non-patent litigation was primarily due to decreased activity related to existing licensee disputes. 

Patent Administration and Licensing Expense: The increase in patent administration and licensing expense primarily resulted from the above-noted increases related to the Technicolor Acquisitions. These increases were partially offset by a decrease in intellectual property enforcement costs and patent amortization expense.
Development Expense: The increase in development expense primarily related to costs associated with the jointly funded R&D collaboration with Technicolor R&I, which terminated on May 31, 2019, and increased personnel-related expenses, as discussed above. These increases were partially offset by reduced spending on the development of commercial solutions in an ongoing effort to optimize our cost structure.
Selling, General and Administrative Expense: The increase in selling, general and administrative expense primarily resulted from the above-noted increases related to the Technicolor Acquisitions and increased personnel-related costs, discussed above.
Non-Operating Income (Expense)
The following table compares first half 2019 non-operating income (expense) to first half 2018 non-operating income (expense) (in thousands):
 Six months ended June 30,    
 2019 2018 Change
Interest expense$(19,385) $(18,203) $(1,182) (6)%
Interest and investment income7,488
 7,273
 215
 3 %
Gain on asset acquisition14,175
 
 14,175
  %
Loss on extinguishment of long-term debt(5,488) 
 (5,488)  %
Other income (expense)(206) (253) 47
 19 %
Total non-operating income (expense)$(3,416) $(11,183) $7,767
 69 %
The change in non-operating income (expense) between periods was primarily driven by the recognition of a net gain of $14.2 million related to the Technicolor R&I acquisition in second quarter 2019. This gain was partially offset by the recognition of a $5.5 million loss on extinguishment of debt recognized in connection with the settlement of a portion of our 2020 Notes in second quarter 2019, higher interest expense related to the 2024 Notes, and interest incurred on long-term debt resulting from the Technicolor Acquisition.2020.
Income taxes
In first half 2019, based on the statutory federal tax rate net of discrete federal and state taxes,quarter 2020, we had an income tax expense of $1.8 million. The effective tax rate of 59.5%. Thefor first half 2019 ratequarter 2020 was impacted by losses in certain jurisdictions where the Company presently has recorded a valuation allowance against the related tax benefit. Excluding this valuation allowance, our first half 2019quarter 2020 effective tax rate would have been 20.4%65.51%. In first half 2019, the Company recorded a net discrete tax expense of $3.4 million related to both the acquisition of the R&I unit of Technicolor SA and the extinguishment of long-term debt recognized during second quarter 2019. This is compared to an effectivefirst quarter 2019 tax rate benefit of 11.1% based on$1.8 million, including a discrete net benefit of $0.5 million primarily related to stock compensation. The Company believes that outcomes which are reasonably possible within the statutory federalnext 12 months may result in the reduction in the liability for unrecognized tax rate net of discrete federal and state taxes during first half 2018. During first half 2018, we recorded discrete benefits of $3.7$1.8 million, related to excess tax benefits related to share-based compensationexcluding interest and our sale of a commercial initiative.  The effective tax rate would have been a benefit of 0.6% not including these discrete benefits.penalties.
As noted above,On March 27, 2020, the CARES Act was signed into law. We are currently evaluating its impact, if any, on us.
On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the "Tax Reform ActAct") was signed into law. The Tax Reform Act imposes a 13.125% tax rate on income that qualifies as FDII. The reduction in benefit is primarily related to the differences in our FDII deduction between the periods. The difference in the FDII deduction between the periods was driven by the timing of income between book and tax mostly related to revenue recognition.Foreign Derived Intangible Income ("FDII"). On March 6, 2019, the IRS issued proposed regulations for FDII. The Company isWe are currently evaluating the impact of the proposedwaiting for final regulations and will record the impact, if any, as applicable.
STATEMENT PURSUANT TO THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 — FORWARD-LOOKING STATEMENTS
This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. Such statements include certain information under the heading “Item 2.

Management’s Discussion and Analysis of Financial Condition and Results of Operations” and other information regarding our current beliefs, plans and expectations, including without limitation the matters set forth below. Words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “forecast,” “goal,” variations of any such words or similar expressions are intended to identify such forward-looking statements. Forward-looking statements in this Quarterly Report on Form 10-Q include, without limitation, statements regarding:

Our expectations regarding the potential effects of new accounting standards including the new revenue recognition guidance, on our financial position, results of operations or cash flows;
Our expectation that the amortization of dynamic fixed-fee royalty payments will reduce our June 30, 2019
Our expectation that the amortization of dynamic fixed-fee royalty payments will reduce our March 31, 2020 deferred revenue balance over the next twelve months;
Our expectations with respect to revenue to be recognized based on contracts signed and committed Dynamic Fixed-Fee Agreement payments as of June 30, 2019;March 31, 2020;
Our expectations and estimations regarding the income tax effects, and the impact on the Company, of the Tax Reform Act, including our forecasted net benefit related to our income qualifying as FDII;
Our expectations with respect to anticipated tax refunds to be received from amending certain tax returns;
The timing, outcome and impact of, and plans, expectations and beliefs with respect to, our various litigation, arbitration, regulatory and administrative matters;
Our belief that we have the ability to obtain additional liquidity through debt and equity financings;

Our expectations with respect to the impact of the Technicolor Acquisitions on our financial statements and our business;
Our belief that our available sources of funds will be sufficient to finance our operations, capital requirements, debt obligations, existing stock repurchase program and dividend program for the next twelve months;
Our expectation that we will continue to pay dividends comparable to our quarterly $0.35 per share cash dividend in the future;
Our expectations regarding our customers’ ability to continue to pay fixed fee payments owed to us despite the ongoing COVID-19 pandemic; and
Our expectation that we will record a gain onexpectations regarding the salepotential effects of the Hillcrest Laboratories, Inc. business.ongoing COVID-19 pandemic on our financial position, results of operations and cash flows.
Forward-looking statements concerning our business, results of operations and financial condition are inherently subject to risks and uncertainties that could cause actual results, and actual events that occur, to differ materially from results contemplated by the forward-looking statements. These risks and uncertainties include, but are not limited to, the risks and uncertainties outlined in greater detail in Part I, Item 1A of our 20182019 Form 10-K and Part II, Item 1A "Risk Factors" in this Quarterly Report on Form 10-Q. We undertake no obligation to revise or update publicly any forward-looking statement for any reason, except as otherwise required by law.

Item 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.
There have been no material changes in quantitative and qualitative market risk from the disclosures included in our 20182019 Form 10-K.

Item 4. CONTROLS AND PROCEDURES.
The Company’s principal executive officer and principal financial officer, with the assistance of other members of management, have evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended) as of the end of the period covered by this report. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective to ensure that the information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and to ensure that the information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934, as amended, is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. There were no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2019,March 31, 2020, that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II — OTHER INFORMATION

Item 1. LEGAL PROCEEDINGS.

See Note 6,5,Litigation and Legal Proceedings,” to the Notes to Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q for a description of legal proceedings, which is incorporated herein by reference.

Item 1A. RISK FACTORS.

Reference is made to Part I, Item 1A, “Risk Factors” included in our 20182019 Form 10-K for information concerning risk factors, which should be read in conjunction with the factors set forth in the Statement Pursuant to the Private Securities Litigation Reform Act of 1995 -- Forward-Looking Statements in Part I, Item 2 of this Quarterly Report on Form 10-Q. Except as set forth below, there have been no material changes with respect to the risk factors disclosed in our 2019 Form 10-K. The risk factor set forth below updates, and should be read together with, the risk factors in our 2019 Form 10-K. You should carefully consider such factors, which could materially affect our business, financial condition or future results. The risks described in this Quarterly Report on Form 10-Q and in the 20182019 Form 10-K are not the only risks facing our company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition and/or operating results.

The extent to which the COVID-19 pandemic or any other potential future public health crises, pandemics or similar events will adversely impact our business, financial condition and results of operations is highly uncertain and cannot be predicted.

The COVID-19 pandemic has created significant worldwide uncertainty, volatility and economic disruption. The extent to which COVID-19 and any other potential future public health crises, pandemics or similar events will adversely impact our business, financial condition and results of operations is dependent upon numerous factors, many of which are highly uncertain, rapidly changing and uncontrollable. These factors include, but are not limited to: (i) the duration and scope of the pandemic or other event; (ii) governmental, business and individual actions that have been and continue to be taken in response to the pandemic or other event, including travel restrictions, quarantines, social distancing, work-from-home and shelter-in-place orders and shut-downs; (iii) the impact on our customers, including those that are presently unlicensed, and other business partners; (iv) the impact on U.S. and global economies and the timing and rate of economic recovery; (v) potential adverse effects on the financial markets and access to capital; (vi) potential goodwill or other impairment charges; (vii) increased cybersecurity risks as a result of pervasive remote working conditions; (viii) our ability to effectively carry out our operations due to any adverse impacts on the health and safety of our employees and their families; (ix) the ability of our customers to timely satisfy their payment obligations to us; and (x) fluctuations in global shipments of handsets and consumer electronics devices. Furthermore, as a result of the COVID-19 pandemic, our employees have been required to work from home and our office locations have remain closed. The significant increase in remote working, particularly for an extended period of time, could exacerbate certain risks to our business, including an increased risk of cybersecurity events, improper dissemination of personal or confidential information and breakdowns in internal controls and processes.

Any of the foregoing factors could amplify the other risks and uncertainties described in our 2019 Form 10-K and could materially adversely affect our business, financial condition, and results of operations. Because the COVID-19 pandemic is unprecedented and continuously evolving, the other potential impacts to our risk factors described in our 2019 Form 10-K are uncertain.



Item 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.

Issuer Purchases of Equity Securities
The following table provides information regarding the Company’s purchase of its common stock during the first half 2019.quarter 2020.
PeriodTotal Number of Shares Purchased (1) Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2) Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs (3)
April 1, 2019 - April 30, 2019322,037
 $67.44
 322,037
 $37,371,305
May 1, 2019 - May 31, 2019307,764
 $68.02
 307,764
 $116,430,445
June 1, 2019 - June 30, 2019313,720
 $62.53
 313,720
 $96,813,533
Total943,521
 $66.00
 943,521
 $96,813,533
PeriodTotal Number of Shares Purchased (1) Average Price Paid Per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (3) Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs (4)
January 1, 2020 - January 31, 2020 (2)6,070
 $57.50
 6,070
 $71,464,670
February 1, 2020 - February 29, 2020
 $
 
 $71,464,670
March 1, 2020 - March 31, 2020
 $
 
 $71,464,670
Total6,070
 $57.50
 6,070
 $71,464,670
                                 
(1) Total number of shares purchased during each period reflects share purchase transactions that were completed (i.e., settled) during the period indicated.
(2) SharesThe shares were purchased pursuant torepurchased in connection with the 2014 Repurchase Program, $300 millionliquidation of which was authorized by the Company’s Board of Directors in June 2014, with an additional $100 million authorized byInterDigital, Inc. stock fund within the Company’s Board of Directors in each of June 2015, September 2017, December 2018, and May 2019, respectively. The 2014 Repurchase Program has no expiration date. The Company may repurchase shares under the 2014 Repurchase Program through open market purchases, pre-arranged trading plans, or privately negotiated purchases.InterDigital, Inc. nonqualified deferred compensation plan.
(3)Shares were purchased pursuant to the 2014 Repurchase Program, $300 million of which was authorized by the Company’s Board of Directors in June 2014, with an additional $100 million authorized by the Company’s Board of Directors in each of June 2015, September 2017, December 2018, and May 2019, respectively. The 2014 Repurchase Program has no expiration date. The Company may repurchase shares under the 2014 Repurchase Program through open market purchases, pre-arranged trading plans, or privately negotiated purchases.
(3)(4) Amounts shown in this column reflect the amounts remaining under the 2014 Repurchase Program.    
Item 4. MINE SAFETY DISCLOSURES.
Not applicable.


Item 6. EXHIBITS.
The following is a list of exhibits filed with this Quarterly Report on Form 10-Q:

Exhibit
Number
 Exhibit Description
4.1*
4.2*
10.1*
10.2*
10.3*
10.4*
   
31.1 
   
31.2 
   
32.1 
   
32.2 
   
101.INS Inline Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
   
101.SCH Inline Schema Document
   
101.CAL Inline Calculation Linkbase Document
   
101.DEF Inline Definition Linkbase Document
   
101.LAB��Inline Labels Linkbase Document
   
101.PRE Inline Presentation Linkbase Document
104Inline Cover Page Interactive Data File (formatted as Inline XBRL with applicable taxonomy extension information contained in Exhibits 101)

*
Incorporated by reference to the previous filing indicated.

+ 
This exhibit will not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such exhibit will not be deemed to be incorporated by reference into any filing under the Securities Act or Securities Exchange Act, except to the extent that InterDigital, Inc. specifically incorporates it by reference.



SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
 INTERDIGITAL, INC. 
   
Date: August 1, 2019May 7, 2020/s/ WILLIAM J. MERRITT   
 
William J. Merritt 
 
 
President and Chief Executive Officer 
 
   
   
Date: August 1, 2019May 7, 2020/s/ RICHARD J. BREZSKI   
 
Richard J. Brezski 
 
 Chief Financial Officer 


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