definiens: shall mean gross service revenues and fees billed by Company, AFFILIATED COMPANIES and SUBLICENSEES for the performance of LICENSED SERVICES less trade discountsor rebates allowed ; refunds ; and sales and/or use taxes imposed upon and with specific reference to the LICENSEDSERVICE . NET SERVICE REVENUES of a COMBINATION SERVICE sold by Company, its SUBLICENSEE(S)and / or its AFFILIATED COMPANIES consisting of one or more services and one or more bacteria - based therapeuticsor prophylactics shall be calculated by : ( i ) subtracting the separately available price of such non - licensed service(s)and such bacteria - based therapeutic(s ) and/or prophylactic(s ) in the COMBINATION SERVICE from the NETSERVICE REVENUES ; or ( ii ) if any component is not sold separately the parties agree to negotiate a reduction in theroyalty rate to reflect the fair value that the LICENSED SERVICE contributes to the overall COMBINATION SERVICEsold based on the fraction of the fair value of all LICENSED PRODUCTS and SERVICES divided by the fair value ofall products and services in the COMBINATION SERVICE . In the event that any bacteria - based therapeutic and / orprophylactic is a LICENSED PRODUCT, the NET SERVICE REVENUES for purposes of royalty payments shall bebased on the sales revenues and fees received from sale of the entire COMBINATION SERVICE, provided however, that the running royalty hereunder shall be imposed only once with respect to the sale of a single unit of a LICENSEDPRODUCT