<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2023-07-31</periodOfReport>

    <dateOfOriginalSubmission>2023-08-02</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001832483</issuerCik>
        <issuerName>Serve Robotics Inc. /DE/</issuerName>
        <issuerTradingSymbol>NONE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001983489</rptOwnerCik>
            <rptOwnerName>Kashani Ali</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SERVE ROBOTICS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>730 BROADWAY</rptOwnerStreet2>
            <rptOwnerCity>REDWOOD CITY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94063</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-07-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>16070</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16070</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Received in connection with the Issuer's merger (the &quot;Merger&quot;) with Serve Robotics Inc. (&quot;Legacy Serve&quot;) in accordance with the terms of the Agreement and Plan of Merger and Reorganization dated as of July 31, 2023 (the &quot;Merger Agreement&quot;), by and among the Issuer (f/k/a Patricia Acquisition Corp.), Serve Acquisition Corp. and Legacy Serve. Pursuant to the terms of the Merger Agreement, each outstanding share of Legacy Serve capital stock was entitled to receive 0.80350 shares of Common Stock. The Merger closed on July 31, 2023.</footnote>
    </footnotes>

    <remarks>The Reporting Person filed a Form 4 on August 2, 2023 (the &quot;Original Form 4&quot;) which inadvertently omitted the shares reported herein as indirectly owned. This amendment is being filed to correct the Original Form 4 to add the omitted shares.</remarks>

    <ownerSignature>
        <signatureName>/s/ Ali Kashani</signatureName>
        <signatureDate>2023-08-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
