Abbott and its Affiliates and Sublicensees shall keep and maintain for [*****] years from the date of each Royalty Payment, Operating Income Payment and Sublicense Income Payment complete and accurate records of gross sales and Net Sales by Abbott and its Affiliates and Sublicensees of each Product, in sufficient detail to allow Royalty Payments, Operating Income Payments and Sublicense Income Payments to be determined accurately. Enanta shall have the right for a period of [*****] years after receiving any such payment to inspect or audit, or to appoint at its expense an independent certified public accountant reasonably acceptable to Abbott to inspect or audit the relevant records of Abbott and its Affiliates and Sublicensees to verify that the amount of such payment was correctly determined. Abbott and its Affiliates and Sublicensees shall each make its records available for inspection or audit by such independent certified public accountant during regular business hours at such place or places where such records are customarily kept, upon reasonable notice from Enanta, solely to verify that Royalty Payments and Sublicense Income Payments were correctly accounted for or determined. Enanta shall not exercise such inspection or audit right [*****]. All records made available for inspection or audit shall be deemed to be Confidential Information of Abbott. The results of each inspection or audit, if any, shall be binding on both Parties. In the event there was an underpayment by Abbott, Abbott shall promptly (but in any event no later than [*****] days after Abbott’s receipt of the independent accountant’s report so concluding) make payment to Enanta of any shortfall, together with the interest payment as provided in Section 6.5.5. In the event that there was an overpayment by Abbott, Enanta shall promptly (but in any event no later than [*****] days after Enanta’s receipt of the independent accountant’s report so concluding) refund to Abbott the excess amount. Enanta shall bear the full cost of such audit unless such audit discloses an underreporting by Abbott of more than [*****] of the aggregate amount of Royalty Payment or Sublicense Income Payments payable in any Calendar Year, in which case Abbott shall reimburse Enanta for all costs incurred by Enanta in connection with such inspection or audit.