Case: Patents/Procedure (Fed. Cir.)

The Federal Circuit dismissed as moot Seagen Inc.'s appeal of the decision of the Patent Trial and Appeal Board holding invalid claims of a patent that discloses monomethylvaline compounds capable of conjugation to ligands, in a post-grant review proceeding by Daiichi Sankyo Inc. The court noted that in a companion case, it held the same patent claims invalid for lack of adequate written description and enablement.