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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 VELpymuexyjV5SWrbNyTTNg+w9XOcEQClzFthV66z3F1zwzo/8Oh4I7CZpOUfnXY
 iCPxhiwSJFKNz/7eIN8c5w==

<SEC-DOCUMENT>0000354913-03-000102.txt : 20031006
<SEC-HEADER>0000354913-03-000102.hdr.sgml : 20031006
<ACCEPTANCE-DATETIME>20031006160453
ACCESSION NUMBER:		0000354913-03-000102
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031002
FILED AS OF DATE:		20031006

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TILDEN CHARLES R
		CENTRAL INDEX KEY:			0001193101

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11152
		FILM NUMBER:		03929835

	BUSINESS ADDRESS:	
		STREET 1:		781 THIRD AVENUE
		CITY:			KING OF PRUSSIA
		STATE:			PA
		ZIP:			194061409

	MAIL ADDRESS:	
		STREET 1:		781 THIRD AVENUE
		CITY:			KING OF PRUSSIA
		STATE:			PA
		ZIP:			194061409

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERDIGITAL COMMUNICATIONS CORP
		CENTRAL INDEX KEY:			0000354913
		STANDARD INDUSTRIAL CLASSIFICATION:	PATENT OWNERS & LESSORS [6794]
		IRS NUMBER:				231882087
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		781 THIRD AVE
		CITY:			KING OF PRUSSIA
		STATE:			PA
		ZIP:			19406-1409
		BUSINESS PHONE:		6102787800

	MAIL ADDRESS:	
		STREET 1:		781 THIRD AVE
		STREET 2:		2200 RENAISANCE BLVD STE 105
		CITY:			KING OF PRUSSIA
		STATE:			PA
		ZIP:			19406-1409

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNATIONAL MOBILE MACHINES CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-10-02</periodOfReport>
    <issuer>
        <issuerCik>0000354913</issuerCik>
        <issuerName>INTERDIGITAL COMMUNICATIONS CORP</issuerName>
        <issuerTradingSymbol>IDCC</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001193101</rptOwnerCik>
            <rptOwnerName>TILDEN CHARLES R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>781 THIRD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>KING OF PRUSSIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19406-1409</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>E.V.P. &amp; COO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-10-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>26000</value></transactionShares><transactionPricePerShare><value>5.625</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>58192</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnershi
p><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHolding><securityTitle><value>Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>505</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By 401(k) Plan</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Option (Right-to-buy)</value></securityTitle><conversionOrExercisePrice><value>5.625</value></conversionOrExercisePrice><transactionDate><value>2003-10-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>26000</value></transactionShares><transactionP
ricePerShare><footnoteId id="F3"/></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F2"/></exerciseDate><expirationDate><value>2006-11-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>26000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>27331</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Between July 1, 2001 and June 30, 2003, the Reporting Person acquired 505 shares of Common Stock pursuant to the InterDigital Communications Corporation Savings and Protection Plan.  This informatio
n is based on the most recently published account statement dated June 30, 2003.</footnote><footnote id="F2">Part of a grant of options which vested as follows:  15,000 on 05/30/1997, 2,777 on 11/30/1997, 15,000 on 05/30/1998, 2,777 on 11/30/1998, 15,000 on 05/30/1999 and 2,777 on 11/30/1999.</footnote><footnote id="F3">Granted pursuant to the InterDigital Communications Corporation 1995 Stock Option Plan for Employees and Outside Directors.</footnote></footnotes><remarks/><ownerSignature><signatureName>Lisa Axt Alexander, Attorney-In-Fact for Charles R. Tilden</signatureName><signatureDate>2003-10-06</signatureDate></ownerSignature></ownershipDocument>

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