8-K

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

                                    FORM 8-K

                                 CURRENT REPORT

                        PURSUANT TO SECTION 13 OR 15 (d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

        DATE OF REPORT (Date of earliest event reported): April 20, 2005
                                                          --------------

                     InterDigital Communications Corporation
             (Exact name of registrant as specified in its charter)



         Pennsylvania                1-11152                      23-1882087
(State or other jurisdiction of   (Commission File Number)      (IRS Employer
        incorporation)                                       Identification No.)


781 Third Avenue, King of Prussia, Pennsylvania                   19406-1409
     (Address of Principal Executive Offices)                     (Zip Code)


        Registrant's telephone number, including area code: 610-878-7800


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_| Written communications pursuant to Rule 425 under the Securities Act
    (17 CFR 230.425)

|_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act
    (17 CFR 240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the
    Exchange Act (17 CFR 240.14d-2(b))

|_| Pre-commencement communications pursuant to Rule 13e-4(c) under the
    Exchange Act (17 CFR 240.13e-4(c))



Item 8.01.        Other Events.

Attached as an exhibit to this Current Report on Form 8-K is a press release
issued by InterDigital Communications Corporation (the "Company") on April 21,
2005, announcing that the Company has completed its current share repurchase
program. A copy of the press release is incorporated herein and is attached
hereto as Exhibit 99.1.

Item 9.01.        Financial Statements and Exhibits.

    (c)     Exhibits. The following exhibit is filed with this report:

            Exhibit 99.1 - Press release dated April 21, 2005.




                                   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 hereunto duly authorized.


                                        INTERDIGITAL COMMUNICATIONS CORPORATION


                                        By: /s/ R.J. Fagan
                                            ----------------------------
                                             Richard J. Fagan
                                             Chief Financial Officer


Date:    April 21, 2005





                                  EXHIBIT INDEX



Exhibit No.                                        Description
- -----------                                        -----------

   99.1                                 Press release dated April 21, 2005

EX-99.1

                                                                    Exhibit 99.1

         InterDigital Completes Two Million Share Repurchase;
       Five Million Shares Repurchased within a Two Year Period

    KING OF PRUSSIA, Pa.--(BUSINESS WIRE)--April 21,
2005--InterDigital Communications Corporation (Nasdaq:IDCC), a leading
architect, designer and provider of wireless technology and product
platforms, today announced that it has completed the repurchase of two
million shares of Common Stock. In October 2004, InterDigital's Board
of Directors authorized the repurchase of one million shares and, in
March 2005, expanded the authorization to a total of two million
shares.
    Since the beginning of 2003, InterDigital has repurchased 5
million shares, investing approximately $86 million. "Our pattern of
share repurchases in recent years reflects our strong commitment to
invest in the value of the Company for the benefit of our shareholders
and our confidence in the value we are creating for the future," said
Harry G. Campagna, Chairman of the Board of Directors.

    About InterDigital

    InterDigital architects, designs and provides advanced wireless
technologies and products that drive voice and data communications.
The Company offer technology and product solutions for mainstream
wireless applications that deliver time-to-market, performance, and
cost benefits, as well as product differentiation advantages, to its
commercial and government/military customers. InterDigital has a
strong portfolio of patented technologies covering 2G, 2.5G, 3G and
802 standards, which it licenses worldwide. For more information,
please visit InterDigital's web site: www.interdigital.com.
InterDigital is a registered trademark of InterDigital Communications
Corporation.

    CONTACT: InterDigital Communications Corporation
             Media:
             Dawn Goldstein, 610-878-7800
             dawn.goldstein@interdigital.com
              or
             Investor:
             Janet Point, 610-878-7800
             janet.point@interdigital.com