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<title>Inogen, Inc. Quarterly report pursuant to Section 13 or 15(d)</title>
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    <h3>Quarterly report pursuant to Section 13 or 15(d)</h3>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/56">Cover</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/56">Document and Entity Information</a></li>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/57">Financial Statements</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/57">Balance Sheets</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/58">Balance sheets (Parenthetical)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/59">Statements of Operations</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/60">Statements of operations (Parenthetical)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/61">Statements of Redeemable Convertible Preferred Stock</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/62">Statements of Stockholders' Equity (Deficit)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/63">Statements of Cash Flows</a></li>
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                        <a class="menu-item current" href="/sec-filings/all-sec-filings/xbrl_doc_only/64">Notes to Financial Statements</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/64">General</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/65">Summary of Significant Accounting Policies</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/66">Intangible Assets</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/67">Long-Term Debt</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/68">Commitments and Contingencies</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/69">Income Taxes</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/70">Convertible Preferred Stock</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/71">Stock Incentive Plans</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/72">Warrants</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/73">Subsequent events</a></li>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/74">Accounting Policies</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/74">General (Policies)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/75">Summary of Significant Accounting Policies (Policies)</a></li>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/76">Notes Tables</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/76">Summary of Significant Accounting Policies (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/77">Intangible Assets (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/78">Long-Term Debt (Tables)</a></li>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/80">Convertible Preferred Stock (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/81">Stock Incentive Plans (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/82">Warrants (Tables)</a></li>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/83">Notes Details</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/83">Summary of Significant Accounting Policies - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/84">General - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/85">Summary of Significant Accounting Policies - Summary of Fair Value Liabilities Measured on Recurring Basis (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/86">Summary of Significant Accounting Policies - Summary of Fair Value Measurements using Significant Level 3 Inputs (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/87">Summary of Significant Accounting Policies - Breakdown of the Company Revenue (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/88">Summary of Significant Accounting Policies - Schedule of Inventories (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/89">Summary of Significant Accounting Policies - Computation of Depreciation and Amortization Using Straight Line Method Over Estimated Useful Lives of Assets (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/90">Summary of Significant Accounting Policies - Summary of Depreciation and Amortization Expense of Property and Equipment and Rental Equipment (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/91">Summary of Significant Accounting Policies - Summary of Property Plant and Equipment and Rental Equipment with Related Accumulated Depreciation (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/92">Summary of Significant Accounting Policies - Computation of Earnings Per Share (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/93">Intangible Assets - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/94">Intangible Assets - Summary of Intangible Assets (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/95">Long-Term Debt - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/96">Long-Term Debt - Schedule of Long-Term Debt (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/97">Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/98">Long-Term Debt - Schedule of Minimum Aggregate Payments due under Non-Cancelable Debt (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/99">Commitments and Contingencies - Minimum Aggregate Payments Due under Non-Cancelable Leases (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/100">Commitments and Contingencies - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/101">Commitments and Contingencies - Schedule of Changes in Aggregate Product Warranty Liabilities (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/102">Income Taxes - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/103">Convertible Preferred Stock - Summary of Redeemable Convertible Preferred Stock (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/104">Convertible Preferred Stock - Summary of Non-Redeemable Convertible Preferred Stock (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/105">Convertible Preferred Stock - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/106">Stock Incentive Plans - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/107">Stock Incentive Plans - Summary of Stock Options Activity (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/108">Warrants - Summary of Outstanding Warrants (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/109">Warrants - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/110">Subsequent events - Additional Information (Detail)</a></li>
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        <h4>Warrants</h4>
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