EDTX judge rules that IPR estoppel applies to all grounds included in the petition, except those that are denied for purely procedural reasons By Tom Owens (US) on May 24, 2017 In Biscotti Inc. v. Microsoft Corp., Magistrate Judge Roy S. Payne of the Eastern District of Texas recommended finding that the IPR estoppel statute, 35 U.S.C. § 315(e), applies to all grounds included in an IPR petition except those…