definiens: shall mean ~Y product in final form being commercialized by a Third Party ( other than a sublicensee ofNVS ) in any country, which product comprises a polypeptide having an interferon - alpha molecule ( or any variants, analogs, homologs, derivatives, modifications, mutants or fragments thereof, including species - specific modifications thereot ) genetically fused to recombinant human albumin ( or any variants, analogs, homologs, derivatives, modifications, mutants or fragments thereof, including sp ~ ies - sp ~ ific modifications thereot ) as ~ single polypeptide chai~ 1.19 shall mean those Commercialization activities undertaken by NVS and HGS ' to implement the marketing plans and strategies with respect to the Collaboration Products under a single trademark in the United States . When used as a verb, " Co - PromoteU shall mean to engage in such activities