In Finjan v. Blue Coat Systems, LLC, No. 15-cv-03295-BLF, (N.D. Cal. July 28, 2017), the court took the majority view on the scope of Inter Partes review estoppel, finding no estoppel for grounds of invalidity not included in a petition and for groun…

Knowledge of a person of skill in the art was recently used to revive claims that had earlier been found indefinite under 35 U.S.C. § 112.  Delaware District Court Judge Leonard P. Stark granted a motion for reargument on the issue of indefinitenes…

Here is a case illustrating the general rule that the preamble of a patent claim is rarely construed as a substantive claim limitation. In Georgetown Rail Equipment Co. v. Holland L.P.¸ No. 2016-2297 (Fed. Cir. Aug. 1, 2017), the Federal Circuit aff…