Estoppel

Written Decision Needed For IPR Estoppel

In Finjan, Inc. v. Cisco Systems, Inc. Case No. 17-cv-00072-BLF (N. D. Cal. Feb. 3, 2020) the Northern District of California denied Plaintiff Finjan’s motion for summary judgement of validity of a number of claims of various pa… Read More

Inter Partes Review Estoppel Extends to Non-Petitioned Grounds

Hewlett Packard Enterprises (“HP”), accused of infringing U.S. Patent No. 6,218,930 owned by Network-1 Technologies, Inc. (“Network-1”), was recently estopped from relying on certain references and combinations thereof to… Read More

Estoppel, or Lack Thereof, in Inter Partes Reexaminations

The Federal Circuit recently clarified the scope of estoppel for inter partes reexaminations, ruling in a pair of decisions that a district-court decision only estops arguments against individual claims of a patent and that a dism… Read More