definiens: shall mean any Development Activities with respect to a TerritoryCombination Product ( including any Combination Product Clinical Trials ) that are necessary or reasonably expected to be necessary toobtain or maintain Regulatory Approval(s ) for such Territory Combination Product in the Field in any or all countries in the Territory, except the term shall exclude ( a ) any Combination Product Clinical Trials conducted by oron behalf of [COMPANY] or its Affiliates or any Combination Product Clinical Trials conducted by or on behalf of [COMPANY], its Affiliates or itsSublicensees, in each case other than those necessary or reasonably expected to be necessary to obtain or maintain RegulatoryApproval(s ) for such Territory Combination Product in the Field in any or all countries in the Territory, ( b ) any Development Activitiesrelating specifically to RPV ( or one or more of the RPV Products ) and ( c ) any Development Activities relating specifically to TDF, TAF orFTC ( or one or more of the [COMPANY] Compound Products )