-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 O/4aPY2T9/h8kXigts+fsGM+XLVHTUlLyVNSQ7xEmcK2gLGnkTjZdwSFGe7VMk1T
 cf6Y3qGCEYvYnTah2hu6Hw==

<SEC-DOCUMENT>0001140361-03-003555.txt : 20030930
<SEC-HEADER>0001140361-03-003555.hdr.sgml : 20030930
<ACCEPTANCE-DATETIME>20030930180943
ACCESSION NUMBER:		0001140361-03-003555
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20020123
FILED AS OF DATE:		20030930

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROTEIN DESIGN LABS INC/DE
		CENTRAL INDEX KEY:			0000882104
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				943023969
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		34801 CAMPUS DR
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94555
		BUSINESS PHONE:		5105741400

	MAIL ADDRESS:	
		STREET 1:		34801 CAMPUS DR
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94555

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LINK MAX
		CENTRAL INDEX KEY:			0001050944

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19756
		FILM NUMBER:		03918617

	BUSINESS ADDRESS:	
		STREET 1:		DISCOVERY LABORATORIES INC
		STREET 2:		509 MADISON AVE 14TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		2122234504

	MAIL ADDRESS:	
		STREET 2:		509 MADISON AVE 14TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4/A</documentType>
<periodOfReport>2002-01-23</periodOfReport>
<dateOfOriginalSubmission>2002-02-11</dateOfOriginalSubmission>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000882104</issuerCik>
        <issuerName>PROTEIN DESIGN LABS INC/DE</issuerName>
        <issuerTradingSymbol>PDLI</issuerTradingSymbol>
</issuer>
<reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001050944</rptOwnerCik>
            <rptOwnerName>LINK MAX</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PROTEIN DESIGN LABS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>34801 CAMPUS DRIVE</rptOwnerStreet2>
            <rptOwnerCity>FREMONT</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94555</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector>
<isOfficer>0</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle></officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeTable>
<nonDerivativeTransaction>
<securityTitle>
<value>Common Stock</value>
</securityTitle>
<transactionDate>
<value>2002-01-23</value>
</transactionDate>
<deemedExecutionDate>
</deemedExecutionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>M</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>20000</value>
</transactionShares>
<transactionPricePerShare>
<value>5.56</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>46000</value>
<footnoteId id="F1"/>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>D</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value></value>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeTransaction>
</nonDerivativeTable>
<footnotes>
<footnote id="F1">The amount of securities beneficially owned was amended to correct the number of shares held after the transaction to reflect a 2-for-1 split of PDLI common stock, effective October 10, 2001.</footnote>
</footnotes>
<remarks></remarks>
<ownerSignature>
<signatureName>/s/ Max Link</signatureName>
<signatureDate>2003-09-30</signatureDate>
</ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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