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
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1. Name and Address of Reporting Person *
MILLER WILLIAM C 2. Issuer Name and Ticker or Trading Symbol
INTERDIGITAL COMMUNICATIONS CORP (IDCC) 5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give _____ Other (specify
title below) below)
Sr. Programs & Eng. Officer /
(Last) (First) (Middle)
781 THIRD AVENUE
3. Date of Earliest Transaction (Month/Day/Year)
09/19/2006
(Street)
KING OF PRUSSIA, PA 19406-1409 4. If Amendment, Date Original Filed (Month/Day/Year)
6. Individual or Join/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 09/19/2006 S 3,716 D $ 33.73 10,329 D
Common Stock 09/19/2006 S 300 D $ 33.72 10,329 D
Common Stock 09/19/2006 S 332 D $ 33.71 10,329 D
Common Stock 09/19/2006 S 2,652 D $ 33.7 10,329 D
Common Stock 09/19/2006 S 200 D $ 33.67 10,329 D
Common Stock 09/19/2006 S 1,317 D $ 33.66 10,329 D
Common Stock 09/19/2006 S 1,000 D $ 33.65 10,329 D
Common Stock 09/19/2006 S 200 D $ 33.64 10,329 D
Common Stock 09/19/2006 S 283 D $ 33.63 10,329 D
Common Stock 1,870 (1) 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 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
Option (Right to Buy) $ 13.19 09/19/2006 M 10,000 (2) 01/29/2011 Common Stock 10,000 (3) 0 D
Explanation of Responses:
1. As of the most recently published account statement dated September 19, 2006, the Reporting Person beneficially owned 1,870 shares of Common Stock pursuant to the InterDigital Communications Corporation Savings and Protection Plan.
2. A grant of 10,000 options which vested as follows: 1,666 on each of 06/30/01 and 12/31/01; 1,667 on each of 06/30/02; 12/31/02; 06/30/03, and 12/31/03.
3. Granted pursuant to the InterDigital Communications Corporation 2000 Stock Award and Incentive Plan.
/s/ Rebecca Bridgeford Opher, Attorney-In-Fact for William C. Miller 09/21/2006
** 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.
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