Understanding the Impact of IPR Estoppel and PTAB Discretionary Denials — Patents: Post-Grant Podcast
Estoppel Doctrine in China's Patent System
INGENICO INC. v. IOENGINE, LLC Before Dyk, Prost, and Hughes. Appeal from the United States District Court for the District of Delaware. IPR estoppel does not preclude reliance on public-use evidence that is substantively...more
In this episode of the Post-Grant Podcast, Andy Zappia, Nick Gallo, and Bryan Smith explore the evolving landscape of estoppel in inter partes review (IPR) and post-grant review (PGR) proceedings at the Patent Trial and...more
In a matter of first impression, the US Court of Appeals for the Federal Circuit found that inter partes review (IPR) estoppel does not preclude a petitioner from relying on the same patents and printed publications as...more
This LawFlash details strategic takeaways and practical lessons from the recent US Court of Appeals for the Federal Circuit case on IPR estoppel, evidence of public use, and jury instructions on specific issues....more
On May 7, 2025, the U.S. Court of Appeals for the Federal Circuit (“CAFC”) affirmed a decision by the U.S. District Court for the District of Delaware (“district court”) that found claims of two IOENGINE, LLC (“IOENGINE”)...more
This Federal Circuit Opinion analyzes statutory estoppel under 35 U.S.C. § 315(e)(1) and examines offensive and defensive arguments related to § 103 obviousness. Gesture Technology Partners, LLC is the owner of U.S....more
In an opinion related to its 2021 ruling that a decision in earlier inter partes reexaminations of related patents had a preclusive effect that collaterally estopped the Patent Trial & Appeal Board (Board) from making new...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
[co-author: Kathleen Wills] Last year, the global COVID-19 pandemic created unprecedented challenges for American courts. By making several changes, however, the U.S. Court of Appeals for the Federal Circuit was able to...more
PATENT CASE OF THE WEEK - Apple Inc. v. Voip-Pal.com, Inc., Appeal No. 2018-1456, -1457 (Fed. Cir. Sept. 25, 2020) - In our Case of the Week, the Federal Circuit addressed two novel issues following inter partes review...more
In the latest round of the Apple/VirnetX saga, the US Court of Appeals for the Federal Circuit held to its precedents in determining when 35 USC § 317(b) estoppel is triggered against inter partes re-examinations. VirnetX...more
In 2018, the U.S. Court of Appeals for the Federal Circuit docketed close to 600 appeals from the U.S. Patent and Trademark Office (USPTO). That is the second highest number since starting to hear post-American Invents Act...more
When an IPR petition results in a final written decision, the IPR petitioner (or the petitioner’s real party in interest or privy) is estopped from asserting in a civil litigation or an ITC action that “the claim is invalid...more
In an action by Apotex for compensation from Sanofi and Schering under the Ontario Statute of Monopolies, U.K. Statute of Monopolies and the Trade-marks Act, the Ontario Court of Appeal has overturned a motion judge’s...more
As the boundaries of estoppel post-SAS continue to unfold, one court has found that if a petitioner’s time for appealing a PTAB partial-institution decision had not yet run out at the time that SAS was handed down, then the...more
Federal Circuit Summary - Before Wallach, O’Malley, and Schall. Appeal from the Patent Trial and Appeal Board. Summary: PGR petitioner has standing to appeal PTAB decision, where petitioner intended to file an ANDA for...more
Our report includes discussions of six of the precedential cases decided in the past week and will include the other three cases in next week’s report. In Aylus v. Apple, the panel finds prosecution disclaimer in a...more
In Parallel Networks Licensing, LLC v. International Business Machines Corporation, No. 1:13-cv-02072, Dkt. No. 366 (D. Del. Feb. 22, 2017) (Slip Op.), the court held IBM was estopped from asserting obviousness under §103...more
Withdrawal of Claims During Prosecution Can Trigger Prosecution History Estoppel In UCB, Inc. v. Yeda Research and Development Co., Ltd., Appeal No. 2015-1957, the Federal Circuit held that prosecution estoppel can apply even...more