EXHIBIT 23.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

         We have  issued  our  report  dated  July  8,  2004,  accompanying  the
financial  statements and schedules of InterDigital  Communications  Corporation
Savings and  Protection  Plan on Form 11-K for the year ended December 31, 2003.
We hereby  consent  to the  incorporation  of said  report  in the  Registration
Statement  of  InterDigital  Communications  Corporation  on Form S-8  (File No.
333-66626, effective August 2, 2001)

/s/ Grant Thornton LLP
Philadelphia, Pennsylvania
July 8, 2004


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