For the avoidance of doubt, Blueprint shall be solely responsible, at its own expense, for obtaining and maintaining any licenses or other rights to access or use any Third Party Intellectual Property (other than as described in Section 4.2 and Section 4.4) that is necessary for the development, manufacture, use or Commercialization of any Blueprint Product.  Each Party agrees to cooperate reasonably with the other Party to assist the other Party’s acquisition of any licenses that it is obligated to obtain pursuant to this Section 4.5; provided ,   however , that such cooperation shall not (except as set forth in Section 4.4) include the undertaking of any financial obligations such as the payment of royalties, milestones or the like.