Brief of Patent Law Professors as Amici Curiae in Support of Petitioners

This Court should reverse the Federal Circuit and hold that IPR estoppel extends only to grounds that were raised or could have been raised during the IPR proceeding. Estoppel would therefore extend to instituted grounds, whether raised during the proceeding or not. Estoppel would not extend to uninstituted grounds, such as grounds which might have been challenged in the petition for review but were not