NT Pharma shall, and shall cause each Subcontractor engaged pursuant to Section 3.2 to, maintain complete and accurate books and records, in sufficient detail (and in good scientific manner appropriate for patent and regulatory purposes, when applicable) and for purposes of demonstrating compliance with the terms hereof, that fully and properly reflect all work done and results achieved with respect to development of Product (the completion of which is evidenced by the obtaining of Regulatory Approval) and maintenance of Regulatory Approval in each country within the Territory (the “ Product Records ”). NT Pharma shall retain all Product Records that it possesses or obtains through any arrangement with Subcontractors for a period of at least three (3) years or for such longer period to the extent required by Applicable Law. During such period, upon the written request of Pfenex, the Product Records possessed by NT Pharma or obtained by NT Pharma through arrangements with Subcontractors shall be subject to inspection and audit by and at the expense of Pfenex no more than once in any Annual Period (or more frequently upon demonstration of reasonable cause). Such audits shall occur upon reasonable notice and during normal business hours by an independent auditor selected by Pfenex and confirmed by NT Pharma in advance, which confirmation shall not be unreasonably withheld or delayed. Pfenex shall treat all information received or subject to review under this Section 3.3 as Confidential Information of NT Pharma in accordance with the provisions of Article VIII. Pfenex shall cause its independent auditor to enter into, before the commencement of the audit, a confidentiality agreement, in form and substance reasonably acceptable to NT Pharma, to maintain such records and information of NT Pharma in confidence in accordance with Article VIII and not use such records or information except to the extent permitted by this Agreement, including any enforcement of the provisions hereof.