8-K

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                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 29, 2005
                                 ______________

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



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


781 Third Avenue, King of Prussia, PA                            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))

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Item 2.02. Results of Operations and Financial Condition.

(a) On April 29, 2005, InterDigital Communications Corporation issued a press
release updating previous guidance on its results of operations and financial
condition for the quarter ended March 31, 2005. A copy of the press release is
attached hereto as Exhibit 99.1.


Item 9.01. Financial Statements and Exhibits.

(c)  Exhibits.

     99.1 Press release dated April 29, 2005.




                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this Current Report on Form 8-K 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


Dated: April 29, 2005




                                  EXHIBIT INDEX



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

   99.1                           Press release dated April 29, 2005

EX-99.1

                                                                    Exhibit 99.1

InterDigital Updates Guidance for First Quarter 2005; First Quarter Revenue
Related to General Dynamics Agreement Higher Than Previous Estimate

     KING OF PRUSSIA, Pa.--(BUSINESS WIRE)--April 29, 2005--InterDigital
Communications Corporation (Nasdaq:IDCC), a leading architect, designer and
provider of wireless technology and product platforms, today announced that it
is updating its guidance for first quarter 2005.
     InterDigital now expects to report first quarter 2005 revenue in the range
of $35.3 million to $35.7 million. First quarter 2005 patent licensing royalty
revenue is expected to be approximately $30.8 million. In addition, the Company
anticipates that first quarter revenue associated with its agreement with
General Dynamics will be between $4.5 million and $4.9 million, an increase of
$2.0 million to $2.4 million over the upper end of previous revenue guidance for
this contract. The Company also indicated that deferred foreign source
withholding tax expense for first quarter 2005 will be approximately $0.8
million and reaffirmed the remaining elements of its previous guidance included
in its Form 10-K filing for the year ended December 31, 2004.
     Richard Fagan, InterDigital's Chief Financial Officer, stated, "We've made
excellent progress against an aggressive schedule in our work for General
Dynamics. As a result, we now expect to substantially exceed our previous first
quarter revenue guidance related to this agreement, which is being accounted for
on a percentage-of-completion basis."
     InterDigital will release its first quarter 2005 financial results before
the market opens on Friday, May 6, 2005.
     InterDigital will host a conference call on Friday, May 6, 2005 at 10:00
a.m. Eastern Daylight Time to discuss its first quarter 2005 financial and
operating results. For access to the conference call within the U.S. please dial
(800) 289-0572 by 9:50 a.m. Eastern Daylight Time on May 6 and ask the operator
for the InterDigital Financial Call. Participants calling from outside the U.S.
should dial (913) 981-5543.
     InterDigital also will provide live access to the call on its web site at:
www.interdigital.com. The Company encourages participants to take advantage of
the Internet option if possible. For the live Internet broadcast, click on link
to the Live Web Cast on the homepage.
     In addition, a replay of the call will be available from 2:00 p.m. EDT May
6 through 11:00 p.m. EDT May 8. To access the recorded replay, dial (888)
203-1112 and use the confirmation code 4061768. A replay of the conference call
will be available for 30 days on InterDigital's web site in the Investing
section.
     Due to the listen-only nature of the web cast, questions or comments should
be directed before the call to InterDigital's Investor Relations department via
e-mail at: investor.relations@interdigital.com. The Company will address e-mail
questions on the call as time permits.

     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.

     This press release contains forward-looking statements regarding our
current beliefs, plans, and expectations as to first quarter 2005 revenue
including revenues from patent licensing royalties and from the General Dynamics
agreement; deferred foreign source withholding tax expense for first quarter
2005 growth; and the remaining elements of its previous guidance included in our
Form 10-K for the year ended December 31, 2004. Forward-looking statements are
subject to risks and uncertainties, and actual outcomes could differ materially
from those expressed in any such forward looking statement due to a variety of
factors including but not limited to unanticipated changes or adjustments to
accruals and expenses and revisions to our estimate of our progress toward
completion on the General Dynamics contract.


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