You may be right, but also, if you review the partnership and commercialization agreements, I'm not sure they reference TPL as the owner or co-owner. They state the following, from the "Master Agreement":

a) TPL has a valid and subsisting license to the MSD Patents from
Moore. Except as disclosed on Schedule 4.6(a), TPL has not received any notice
or claim challenging TPL's rights with respect to the MSD Patents or suggesting
that any Person, other than Patriot and Moore, has any claim of legal or
beneficial ownership with respect thereto, nor, to TPL's knowledge, is there a
reasonable basis for any such claim.