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In IOENGINE, LLC v. Ingenico Inc. (Fed. Cir. 2025), the Federal Circuit narrowed the scope of IPR estoppel under 35 U.S.C. § 315(e)(2), which precludes an IPR petitioner from asserting in court that a patent claim “is invalid...more
In a significant development for patent litigants, the Federal Circuit in Ingenico Inc. v. IOENGINE, LLC, affirmed an important limitation on the scope of IPR estoppel under 35 U.S.C. § 315(e)(2). Specifically, the court held...more
On May 7, 2025, the Federal Circuit issued a precedential decision in Ingenico Inc. v. IOENGINE, LLC that narrows the scope of inter partes review (IPR) estoppel under 35 U.S.C. § 315(e)(2), resolving a longstanding district...more
Federal Circuit Judge William Bryson, sitting by designation in the District of Delaware, ruled on summary judgment that inter partes review (IPR) estoppel does not apply to device art, even if the device is cumulative of...more
[co-author: Jamie Dohopolski] Last year, the continued global COVID-19 pandemic forced American courts to largely continue the procedures set in place in 2020. The U.S. Court of Appeals for the Federal Circuit was no...more
A Central District of California judge recently granted summary judgment of no obviousness based on inter partes review (IPR) estoppel because the only prior art references used to challenge patent validity could have been...more
Last week, in Novartis Pharmaceuticals Corp. v. Par Pharmaceutical Inc., District Judge Richard G. Andrews of the U.S. District Court for the District of Delaware granted a Motion for Estoppel under 35 U.S.C. § 315(e)(2)...more
Assignor estoppel is an equitable doctrine that prevents a party who assigns a patent to another from later challenging the validity of the assigned patent. As reported in a prior post, the Federal Circuit recently stated...more
The Supreme Court has issued two important decisions affecting Inter Partes Review (“IPR”) and other post-grant patent challenges conducted by the Patent Trial and Appeal Board (“PTAB”)....more
The court in Koninklijke Philips N.V. v. Wangs All. Corp., No. 14:cv-12298, 2018 WL 283893 (D. Mass. Jan. 2, 2018) denied summary judgement of no invalidity, finding that the Federal Circuit’s holding in Shaw forecloses a...more
Core Wireless v. LG affirms the denial of summary judgment as to unpatentable subject matter, ruling that the asserted claims are directed to an improved user interface for computing devices, not to the abstract idea of an...more
With institution rates of IPR petitions continuing to slide, and with district courts determining (depending on narrow or broad readings of the Shaw case) how estoppel may or may not apply in district court to noninstituted...more
In an opinion dated October 12, 2017, the U.S. District Court for the Eastern District of Wisconsin granted a motion in limine to exclude evidence that a challenged patent had survived twenty post-issuance proceedings,...more
While the House Judiciary Committee conducts hearings today on "The Impact of Bad Patents on American Businesses," a movement is afoot in the Senate to revitalize the U.S. patent system. On June 21, 2017, a bipartisan group...more
In a Final Written Decision in Johns Manville Corp. v. Knauf Insulation, Inc., IPR2016-00130, Paper 35 (P.T.A.B. May 8, 2017), the PTAB found that petitioner Johns Manville (JM) was not estopped from raising its own company...more
The Patent Trial and Appeal Board issued concurrent final written decisions upholding the validity of all challenged claims of U.S. Patent No. 8,141,154 in Palo Alto Networks, Inc. v. Finjan. Inc. IPR2015-01979, Paper 62...more
In 2011, the Leahy-Smith America Invents Act (“AIA”) established new post-issuance procedures for challenging the validity of a granted patent before the Patent Trials and Appeal Board (“PTAB” or “Board”). Inter partes...more