The Federal Circuit has issued an opinion on the burden of proof for establishing estoppel in a case involving an inter partes review (IPR) petition. The case is.
Under 35 U.S.C. § 315(e)(2), a patent challenger in an inter partes review (IPR) that reaches a final written decision is estopped from arguing in a district court or the ITC that the challenged patent is invalid.
Under 35 U.S.C. § 315(e)(2), a patent challenger in an inter partes review (IPR) that reaches a final written decision is estopped from arguing in a district court or the ITC that the.
On April 3, 2023, the Federal Circuit issued an opinion in Ironburg Inventions Ltd. v. Valve Corp., addressing the scope of what invalidity grounds are subject to estoppel pursuant to 35 U.S.C. § 315(e)(2).
On April 3, 2023, the Federal Circuit issued an opinion in Ironburg Inventions Ltd. v. Valve Corp., addressing the scope of what invalidity grounds are subject to estoppel pursuant to.