definiens: shall mean, with respect to Product in each country in the Bago Territory and subject to the provisions of Article V of this Agreement, the longer of ( a ) if the manufacture, use, offer for sale, sale or import of such Product in such country at the time of the First Commercial Sale of Product as a Mucoregulator infringes a Valid Patent Claim but for the license granted by [COMPANY] by this Agreement, the royalty period continues for as long as such Valid Patent Claim remains in effect and is infringed thereby but for the license granted by this Agreement, or ( b ) ten ( 10 ) years from the date Bago begins marketing the Product as a Mucoregulator in such country . shall mean, with respect to Reformulated Product, in each country in the Bago Territory and subject to Article V of this Agreement, ten ( 10 ) years from the date of the First Commercial Sale of such Reformulated Product by Bago, its Affiliates, or sublicensees ; provided, however, that Reformulated Product shall only refer to Reformulated Product developed by Bago