definiens: shall mean, for any period of calculation, the aggregate gross amount invoiced by [COMPANY] to its customers during that period for commercial sales of the Product, less : ( a ) Discounts, rebates, chargebacks, adjustments ( including retroactive or shelf stock adjustments ), cash incentive payments or any other discounts as may be accrued or actually paid, credited or given by [COMPANY] to customers in connection with the sale of Product ; ( b ) Excise, sales and other taxes imposed upon the sale of Product ( but not taxes imposed on the income generated from such sales ) ; ( c ) Amounts repaid or credited by reason of rejection or returns ( including by reason of customer disputed quantities, shortages, damaged Product, or unsold or expired Product three ( 3 ) months beyond its date ) ; ( d ) All discounts, rebates, or other payments required by Law to be made under U.S. Medicaid, Medicare or any other governmental sp ecial medical assistance program ; and ( e ) Appropriate deductions for bad debts and uncollectible accounts for the applicable accounting Period