What Happens When IPR Cancellations and Ex Parte Reexam Amendments Collide?

  • November 9, 2019
  • Category: Patent Litigation Feature
    Market Sector: Networking

Apple (4:19-cv-06769) and Samsung (4:19-cv-06773) have each filed an analogous complaint in the Northern District of California seeking declaratory judgments of claim preclusion, noninfringement, and invalidity of claims added by IXI IP, LLC and IXI Mobile (R&D) Ltd. (collectively, IXI) to a patent already held invalid. The Patent Trial and Appeal Board (PTAB) cancelled the patent’s claims through a final written decision in an inter partes review (IPR), a decision later affirmed by the Federal Circuit. Litigation over that particular patent nevertheless persisted. Why?

View full article with free 30-day trial
($79/month thereafter)

  • Over 7,000 news articles covering new patent cases, key policy decisions, and USPTO assignments
  • Advanced custom alerts for campaigns and entities
  • Proprietary litigation timelines
  • Full access to Federal Circuit, PTAB, and ITC dockets
  • Judge, venue, and law firm analytics


Thank you for your feedback