SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

1. Name and Address of Reporting Person^*

KIERNAN BRIAN G

(Last)

(First)

(Middle)

781 THIRD AVENUE

(Street)

KING OF PRUSSIA

19406

(City)

(State)

(Zip)

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)
	Executive VP, Standards

3. Date of Earliest Transaction (Month/Day/Year)
08/03/2009

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/03/2009		M⁽¹⁾		13,681	A	$9.6	54,206	D
Common Stock	08/03/2009		S⁽¹⁾		13,681	D	$30	40,525	D
Common Stock	08/03/2009		M⁽¹⁾		11,702	A	$13.19	52,227	D
Common Stock	08/03/2009		S⁽¹⁾		11,702	D	$30	40,525	D
Common Stock	08/03/2009		M⁽¹⁾		1,604	A	$9.98	42,129	D
Common Stock	08/03/2009		S⁽¹⁾		1,604	D	$30	40,525	D
Common Stock	08/03/2009		M⁽¹⁾		1,603	A	$10.63	42,128	D
Common Stock	08/03/2009		S⁽¹⁾		1,603	D	$30	40,525	D
Common Stock								2,837⁽²⁾	I	By 401(k) Plan

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Options (Right-to-Buy)	$9.6	08/03/2009		M⁽¹⁾			13,681	12/31/2001⁽³⁾	12/20/2011	Common Stock	13,681	$0.00	0	D
Options (Right-to-Buy)	$13.19	08/03/2009		M⁽¹⁾			11,702	06/30/2001⁽⁴⁾	01/29/2011	Common Stock	11,702	$0.00	0	D
Options (Right-to-Buy)	$9.98	08/03/2009		M⁽¹⁾			1,604	12/27/2001⁽⁵⁾	12/27/2011	Common Stock	1,604	$0.00	0	D
Options (Right-to-Buy)	$10.63	08/03/2009		M⁽¹⁾			1,603	12/18/2001⁽⁶⁾	12/18/2011	Common Stock	1,603	$0.00	0	D

Explanation of Responses:

1. The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

2. 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.

3. A grant of 13,681 options that vested as follows: 1,666 on 12/31/2001; 2,186 on 06/30/2002; 2,368 on 12/31/2002; 2,443 on 06/30/2003; 2,491 on 12/31/2003; and 2,527 on 06/30/2004.

4. A grant of 11,702 options that vested as follows: 1,666 on 06/30/2001; 1,667 on 12/31/2001; 1,869 on 06/30/2002; 2,059 on 12/31/2002; 2,178 on 06/30/2003; and 2,263 on 12/31/2003.

5. A grant of 1,604 options that vested as follows: 375 on 12/27/2001 and 1,229 on 12/22/2005.

6. A grant of 1,603 options that vested as follows: 375 on 12/18/2001 and 1,228 on 12/22/2005.

Remarks:

	Jannie K. Lau, Attorney-in-Fact for Brian G. Kiernan	08/05/2009
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 Number.