As we previously reported (here), the U.S. District Court for the Northern District of Illinois in an August 2017 decision in Oil Dri Corp. v. Nestle Purina Petcare Co., No. 1-15-cv-01067 (N.D. Ill., Aug. 2, 2017) joined the seeming trend of courts interpreting estoppel against patent challengers in inter partes review (IPR) proceedings more broadly … Continue Reading
