FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * SHAY LAWRENCE F   2. Issuer Name and Ticker or Trading Symbol InterDigital, Inc. [IDCC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Exec. VP, IP & Chf. IP Counsel (Last) (First) (Middle) 781 THIRD AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 01/01/2009 (Street) KING OF PRUSSIA, PA 19406 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/01/2009   A   8,000 A (1) $ 0 36,636 D   Common Stock 01/01/2009   F(2)   954 D $ 27.5 35,682 D   Common Stock 01/01/2009   A   5,980 A (3) $ 0 41,662 D   Common Stock 01/01/2009   A   1,000 A (4) $ 0 42,662 D   Common Stock 01/01/2009   F(5)   358 D $ 27.5 42,304 D   Common Stock               2,532 (6) I By 401(k) Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SHAY LAWRENCE F 781 THIRD AVENUE KING OF PRUSSIA, PA 19406			Exec. VP, IP & Chf. IP Counsel

Signatures

/s/ Steven W. Sprecher, Attorney-In-Fact for Lawrence F. Shay		01/05/2009
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Restricted stock units granted pursuant to the company's 1999 Restricted Stock Plan.
(2)	The transaction reported reflects the withholding of restricted stock units in satisfaction of the reporting person's tax liability. The restricted stock units were part of an award granted to the reporting person on January 1, 2009 pursuant to the company's 1999 Restricted Stock Plan and also reported in this Form 4 and that vested, in part, immediately.
(3)	Restricted stock units granted pursuant to the company's 1999 Restricted Stock Plan in accordance with the company's Long Term Compensation Program.
(4)	Restricted stock granted pursuant to the company's 1999 Restricted Stock Plan in accordance with the company's supplemental payment program for executive officers.
(5)	The transaction reported reflects the withholding of shares of restricted stock in satisfaction of the reporting person's tax liability. The shares of restricted stock were part of an award granted to the reporting person on January 1, 2009 pursuant to the company's 1999 Restricted Stock Plan and also reported in this Form 4 and that vested immediately.
(6)	As of the most recently published account statement, the reporting person beneficially owned this number of whole shares of Common Stock pursuant to the InterDigital Savings and Protection Plan.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.