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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_0437CF97088E0086039BBD712A12F330" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_C2CAD99F40A148E7C4AEBD712A12F5C3_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_C2CAD99F40A148E7C4AEBD712A12F5C3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash flows from investing activities:</link:label>
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    <link:label id="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1_terseLabel_en-US" xlink:label="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monthly payments under the lease</link:label>
    <link:label id="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1_label_en-US" xlink:label="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Periodic Payments, Amount</link:label>
    <link:label id="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1_documentation_en-US" xlink:label="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease, Periodic Payments, Amount</link:label>
    <link:loc xlink:href="ino-20170630.xsd#ino_LeasePeriodicPaymentsAmount" xlink:label="loc_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1" xlink:to="lab_ino_LeasePeriodicPaymentsAmount_4DD7503BF0CA34C9EFCDA90FDFC7FAD1" xlink:type="arc" />
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    <link:label id="lab_ino_LeaseAdjustableRentPeriod_CD78746C2D6011757B0BA90FDFC70BFE_label_en-US" xlink:label="lab_ino_LeaseAdjustableRentPeriod_CD78746C2D6011757B0BA90FDFC70BFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Adjustable Rent Period</link:label>
    <link:label id="lab_ino_LeaseAdjustableRentPeriod_CD78746C2D6011757B0BA90FDFC70BFE_documentation_en-US" xlink:label="lab_ino_LeaseAdjustableRentPeriod_CD78746C2D6011757B0BA90FDFC70BFE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease, Adjustable Rent Period</link:label>
    <link:loc xlink:href="ino-20170630.xsd#ino_LeaseAdjustableRentPeriod" xlink:label="loc_ino_LeaseAdjustableRentPeriod_CD78746C2D6011757B0BA90FDFC70BFE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SecurityDeposit_DC11EDC36414BF67B069A90FDFC734FC_terseLabel_en-US" xlink:label="lab_us-gaap_SecurityDeposit_DC11EDC36414BF67B069A90FDFC734FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Security deposit</link:label>
    <link:label id="lab_us-gaap_SecurityDeposit_DC11EDC36414BF67B069A90FDFC734FC_label_en-US" xlink:label="lab_us-gaap_SecurityDeposit_DC11EDC36414BF67B069A90FDFC734FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Security Deposit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SecurityDeposit" xlink:label="loc_us-gaap_SecurityDeposit_DC11EDC36414BF67B069A90FDFC734FC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16_terseLabel_en-US" xlink:label="lab_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collaborative Agreements</link:label>
    <link:label id="lab_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16_label_en-US" xlink:label="lab_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collaborative Arrangement Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CollaborativeArrangementDisclosureTextBlock" xlink:label="loc_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16" xlink:to="lab_us-gaap_CollaborativeArrangementDisclosureTextBlock_D3311CAD0948DAB1227A84F22D7BFD16" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principles of Consolidation</link:label>
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_D6770B0A866BFA11762C84F22ECABE23" xlink:type="arc" />
    <link:label id="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3_verboseLabel_en-US" xlink:label="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets (Textual) [Abstract]</link:label>
    <link:label id="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3_label_en-US" xlink:label="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets (Textual) [Abstract]</link:label>
    <link:label id="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3_documentation_en-US" xlink:label="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Goodwill and intangible assets.</link:label>
    <link:loc xlink:href="ino-20170630.xsd#ino_GoodwillAndIntangibleAssetsTextualAbstract" xlink:label="loc_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3" xlink:to="lab_ino_GoodwillAndIntangibleAssetsTextualAbstract_F21E03A27682EBD41EF984F22DE061A3" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_6F31C216A73D57456C2A84F22DE0A51E_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_6F31C216A73D57456C2A84F22DE0A51E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate amortization expense on intangible assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_6F31C216A73D57456C2A84F22DE0A51E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_6F31C216A73D57456C2A84F22DE0A51E" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_6F31C216A73D57456C2A84F22DE0A51E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated aggregate amortization expense for remainder of 2017</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_45501DECEB81535F4EA984F22DE0B107" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated aggregate amortization expense for 2018</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C8641984D11AF8C8A28984F22DE06FE3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated aggregate amortization expense for 2019</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_DD5FC768A87F9AF5EDEA84F22DE09FEE" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated aggregate amortization expense for 2020</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1800DC2DCCA559331D5584F22DE0EDE3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Estimated aggregate amortization expense for 2021</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_4AFDE1C7780141325EEF84F22DE03737" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated aggregate amortization expense for 2022 and the years after</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_E4069E55EFF9A41383C484F22DE030F3" xlink:type="arc" />
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