definiens: means any process, formula, method, chemical compound, biological or physical material(including ADC Product Candidates, and Unilateral Products ), invention, technology, know - how, trade secret or dataconceived or reduced to practice by either Party or jointly by both Parties in the conduct of the activities under theADC Research Program, or in the development or commercialization of Unilateral Products outside of theCollaboration Program and solely in accordance with the licenses and rights set forth under this Agreement and / orunder the Initial Agreement only ; provided, that Program Inventions shall not include Improvement Inventions toSeattle Genetics Material / Technology ( as defined in the Initial Agreement ) made pursuant to the Initial Agreement thatare not related to a Designated Antigen or an Exclusive Antigen, each of which shall remain governed by the terms ofthe Initial Agreement . Program Inventions shall not include Collaboration Inventions