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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1405495	Interdigital Inc.	IDCC	Patent Owners & Lessors (6794)	231882087

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1061410	T Steven Clontz	781 Third Avenue King Of Prussia PA 19406		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-11-04	8,000	$6.88	89,448	No	4	M	Direct
Common Stock	Disposition	2010-11-04	8,000	$35.00	81,448	No	4	S	Direct
Common Stock	Acquisiton	2010-11-04	12,000	$7.25	93,448	No	4	M	Direct
Common Stock	Disposition	2010-11-04	12,000	$35.00	81,448	No	4	S	Direct
Common Stock	Acquisiton	2010-11-04	19,200	$7.25	100,648	No	4	M	Direct
Common Stock	Disposition	2010-11-04	19,200	$35.00	81,448	No	4	S	Direct
Common Stock	Acquisiton	2010-11-04	8,800	$7.75	90,248	No	4	M	Direct
Common Stock	Disposition	2010-11-04	8,800	$35.00	81,448	No	4	S	Direct
Common Stock	Acquisiton	2010-11-04	10,000	$10.41	91,448	No	4	M	Direct
Common Stock	Disposition	2010-11-04	10,000	$35.00	81,448	No	4	S	Direct
Common Stock	Acquisiton	2010-11-04	28,000	$11.69	109,448	No	4	M	Direct
Common Stock	Disposition	2010-11-04	28,000	$35.00	81,448	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Options (Right-to-Buy)	Disposition	2010-11-04	8,000	$0.00	8,000	$6.88
Common Stock	Options (Right-to-Buy)	Disposition	2010-11-04	12,000	$0.00	12,000	$7.25
Common Stock	Options (Right-to-Buy	Disposition	2010-11-04	19,200	$0.00	19,200	$7.25
Common Stock	Options (Right-to-Buy)	Disposition	2010-11-04	8,800	$0.00	8,800	$7.75
Common Stock	Options (Right-to-Buy)	Disposition	2010-11-04	10,000	$0.00	10,000	$10.41
Common Stock	Options (Right-to-Buy)	Disposition	2010-11-04	28,000	$0.00	28,000	$11.69

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2001-01-08	2011-01-08	No	4	M	Direct
0	2001-01-05	2011-01-05	No	4	M	Direct
0	2001-01-09	2011-01-09	No	4	M	Direct
0	2001-01-10	2011-01-10	No	4	M	Direct
0	2002-01-04	2012-01-04	No	4	M	Direct
20,000	2003-06-15	2012-06-04	No	4	M	Direct

Footnotes

The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
A grant of 8,000 options that vested in full on the date specified, and that are set to expire on 01/08/2011.
A grant of 12,000 options that vested in full on the date specified, and that are set to expire on 01/05/2011.
A grant of 19,200 options that vested in full on the date specified, and that are set to expire on 01/09/2011.
A grant of 8,800 options that vested in full on the date specified, and that are set to expire on 01/10/2011.
A grant of 10,000 options that vested in full on the date specified, and that are set to expire on 01/04/2012.
A grant of 48,000 options that vested in equal installments of 16,000 on each of the following dates: 06/15/2003; 06/03/2004; and 06/02/2005, and that are set to expire on 06/04/2012.