-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IIcEqWQNAm3GG9JCBJaB7lVZcofmfFMWYIqH0E6d9o8eHTtVH8i8oegOOkNhBqU/
 8+XQTESsUDteiDpINjCO0g==

<SEC-DOCUMENT>0000897101-03-001008.txt : 20030820
<SEC-HEADER>0000897101-03-001008.hdr.sgml : 20030820
<ACCEPTANCE-DATETIME>20030820073945
ACCESSION NUMBER:		0000897101-03-001008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030814
FILED AS OF DATE:		20030820

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MENDOCINO BREWING CO INC
		CENTRAL INDEX KEY:			0000919134
		STANDARD INDUSTRIAL CLASSIFICATION:	MALT BEVERAGES [2082]
		IRS NUMBER:				680318293
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		13351 S HWY 101
		CITY:			HOPLAND
		STATE:			CA
		ZIP:			95449
		BUSINESS PHONE:		7077441015

	MAIL ADDRESS:	
		STREET 1:		13351 S HWY 101
		CITY:			HOPLAND
		STATE:			CA
		ZIP:			95449

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			UNITED BREWERIES OF AMERICA INC
		CENTRAL INDEX KEY:			0001048728
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13636
		FILM NUMBER:		03857057

	BUSINESS ADDRESS:	
		STREET 1:		THREE HARBOR DRIVE, SUITE 115
		CITY:			SAUSALITO
		STATE:			CA
		ZIP:			94965
		BUSINESS PHONE:		4152891400

	MAIL ADDRESS:	
		STREET 1:		THREE HARBOR DRIVE
		STREET 2:		SUITE 115
		CITY:			SAUSALITO
		STATE:			CA
		ZIP:			94965
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>uba033528_4ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
   <periodOfReport>2003-08-14</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000919134</issuerCik>
        <issuerName>MENDOCINO BREWING CO INC</issuerName>
        <issuerTradingSymbol>MBR</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001048728</rptOwnerCik>
            <rptOwnerName>UNITED BREWERIES OF AMERICA INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>THREE HARBOR DRIVE, SUITE 115</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAUSALITO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94965</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>0</isDirector>
         <isOfficer>0</isOfficer>
         <isTenPercentOwner>1</isTenPercentOwner>
         <isOther>0</isOther>
      </reportingOwnerRelationship>
   </reportingOwner>
 <derivativeTable>
   <derivativeTransaction>
      <securityTitle>
         <value>Convertible Note</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>1.50</value>
      </conversionOrExercisePrice>
      <transactionDate>
         <value>2003-08-14</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>J</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
            <footnoteId id="F1"/>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>0</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>0</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <exerciseDate>
         <value>2003-08-14</value>
      </exerciseDate>
      <expirationDate>
            <footnoteId id="F2"/>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>0</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <valueOwnedFollowingTransaction>
           <value>1515371</value>
         </valueOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeTransaction>
 </derivativeTable>
   <footnotes>
      <footnote id="F1"> Pursuant to a Third Amendment to Extension of Term of Notes
Under Master Line of Credit Agreement dated August 14, 2003 (the &quot;Amendment&quot;),
between the Issuer and the Reporting Person, the terms of all of the promissory notes
(the &quot;Notes&quot;) issued pursuant to the Master Loan Agreement, as amended,
between the Issuer and the Reporting Person have been extended until August 14, 2004.
Unless the Notes are repaid prior to August 14, 2004, they will continue to earn interest
until that date. This increase in the period of time during which the Notes will earn interest
may cause an increase in the number of shares of the Issuer's Common Stock which may be
purchased upon the Reporting Person's conversion of the Notes. As of June 30, 2003, the
outstanding principal on the Notes was $1,515,371, which corresponds to the right to purchase
1,010,247 shares of Common Stock, and the outstanding interest was $364,200, which corresponds
to the right to purchase</footnote>
      <footnote id="F2"> N/A</footnote>
   </footnotes>
   <ownerSignature>
      <signatureName>Dr. Vijay Mallya, Chairman and CEO</signatureName>
      <signatureDate>2003-08-14</signatureDate>
   </ownerSignature>
</ownershipDocument>

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