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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001380444-07-000040.txt : 20070919
<SEC-HEADER>0001380444-07-000040.hdr.sgml : 20070919
<ACCEPTANCE-DATETIME>20070919192146
ACCESSION NUMBER:		0001380444-07-000040
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070918
FILED AS OF DATE:		20070919
DATE AS OF CHANGE:		20070919

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HALOZYME THERAPEUTICS INC
		CENTRAL INDEX KEY:			0001159036
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				880488686
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11588 SORRENTO VALLEY ROAD
		STREET 2:		SUITE 17
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		(858) 794-8889

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GLOBAL YACHT SERVICES INC
		DATE OF NAME CHANGE:	20010912

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PATTON JOHN STUART
		CENTRAL INDEX KEY:			0001247653

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32335
		FILM NUMBER:		071125607

	MAIL ADDRESS:	
		STREET 1:		150 INDUSTRIAL ROAD
		STREET 2:		C/O NEKTAR THERAPEUTICS
		CITY:			SAN CARLOS
		STATE:			CA
		ZIP:			94070
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
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<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-09-18</periodOfReport>

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        <issuerName>HALOZYME THERAPEUTICS INC</issuerName>
        <issuerTradingSymbol>HALO</issuerTradingSymbol>
    </issuer>

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            <rptOwnerCity>SAN DIEGO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
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            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <postTransactionAmounts>
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                    <value>84871</value>
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            <ownershipNature>
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        <nonDerivativeTransaction>
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                <transactionShares>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>83971</value>
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                    <value></value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionPricePerShare>
                    <value>9.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                    <value>D</value>
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            <transactionAmounts>
                <transactionShares>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>75771</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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                <natureOfOwnership>
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        <nonDerivativeTransaction>
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                <value>Common Stock</value>
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                <transactionCode>S</transactionCode>
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                <transactionShares>
                    <value>71</value>
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                <transactionPricePerShare>
                    <value>9.04</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>75700</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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                <natureOfOwnership>
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        <nonDerivativeTransaction>
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                <value>Common Stock</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
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            <transactionAmounts>
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                    <value>9.05</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>75000</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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                <natureOfOwnership>
                    <value></value>
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            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares purchased and sold, as applicable, pursuant to 10b5-1 Plan.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ John S. Patton</signatureName>
        <signatureDate>2007-09-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----