IGT v. Zynga (Fed. Cir., July 22, 2025) 2023-2262
This decision from the United States Court of Appeals for the Federal Circuit concerns an appeal between IGT and Zynga Inc. stemming from a patent dispute. The core of the conflict revolves around IGT's patent, "Secured Virtual Network in a Gaming Environment," which Zynga challenged for obviousness in an inter partes review (IPR). The court evaluates whether an earlier interference proceeding should have prevented Zynga's IPR challenge due to interference estoppel, ultimately affirming the Patent Trial and Appeal Board's (PTAB) decision to allow the IPR and its finding that IGT's patent…
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