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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,
 EtUaG0w7ao3VOR34jCi/9Njl8IXB0sgGrnHLw/gy+S6YW/rZhr/dEBDFSRN8+kVO
 HqX42a5Ik9ldbA8mrpl2Gw==

<SEC-DOCUMENT>0001181431-09-052563.txt : 20091118
<SEC-HEADER>0001181431-09-052563.hdr.sgml : 20091118
<ACCEPTANCE-DATETIME>20091118161605
ACCESSION NUMBER:		0001181431-09-052563
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091116
FILED AS OF DATE:		20091118
DATE AS OF CHANGE:		20091118

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SILVERMAN HARRY
		CENTRAL INDEX KEY:			0001192730

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20190
		FILM NUMBER:		091193528

	MAIL ADDRESS:	
		STREET 1:		C/O ABLE LABORATORIES IN
		STREET 2:		8 HOLLYWOOD COURT
		CITY:			S PLAINFIELD
		STATE:			NJ
		ZIP:			07080

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AUTHENTIDATE HOLDING CORP
		CENTRAL INDEX KEY:			0000885074
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				141673067
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		CONNELL CORPORATE CENTER
		STREET 2:		300 CONNELL DRIVE, 5TH FLOOR
		CITY:			BERKELEY HEIGHTS
		STATE:			NJ
		ZIP:			07922
		BUSINESS PHONE:		9087871700

	MAIL ADDRESS:	
		STREET 1:		CONNELL CORPORATE CENTER
		STREET 2:		300 CONNELL DRIVE, 5TH FLOOR
		CITY:			BERKELEY HEIGHTS
		STATE:			NJ
		ZIP:			07922

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BITWISE DESIGNS INC
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rrd257666.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-11-16</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000885074</issuerCik>
        <issuerName>AUTHENTIDATE HOLDING CORP</issuerName>
        <issuerTradingSymbol>ADAT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192730</rptOwnerCik>
            <rptOwnerName>SILVERMAN HARRY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>AUTHENTIDATE HOLDING CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>300 CONNELL DRIVE, FIFTH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>BERKELEY HEIGHTS</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07922</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40100</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <remarks>No Securities Beneficially Owned.</remarks>

    <ownerSignature>
        <signatureName>/s/ Harry J. Silverman</signatureName>
        <signatureDate>2009-11-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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