Understanding the Impact of IPR Estoppel and PTAB Discretionary Denials — Patents: Post-Grant Podcast
Navigating PTAB’s New Approach to IPR and PGR Discretionary Denial - Patents: Post-Grant Podcast
4 Key Takeaways | Updates in Standard Essential Patent Licensing and Litigation
Behaving Badly: OpenSky v. VLSI and Sanctions at the PTAB — Patents: Post-Grant Podcast
Scott McKeown Discusses PTAB Trends and Growth of Wolf Greenfield’s Washington, DC Office
USPTO Director Review — Patents: Post-Grant Podcast
The Briefing: Failure to Disclose Relationship with Real Party in Interest Results in Serious Sanctions
Podcast: The Briefing - Failure to Disclose Relationship with Real Party in Interest Results in Serious Sanctions
Disputing Patent-Eligible Subject Matter in PGRs and IPRs - Patents: Post-Grant Podcast
Reexamination in IPR and PGR Practice – Patents: Post-Grant Podcast
Reissue in IPR and PGR Practice – Patents: Post-Grant Podcast
3 Key Takeaways | Third party Prior Art Submissions at USPTO
Discretionary Denials at the PTAB: What to Expect? - Patents: Post-Grant Podcast
Motions to Amend: PTO Pilot Program Extended - Patents: Post-Grant Podcast
Drilling Down: Real Parties in Interest and Time Bars - Patents: Post-Grant Podcast
JONES DAY TALKS®: Supreme Court Rules on Constitutionality of Administrative Patent Judges
IPR Institution and Early Intervention - Patents: Post-Grant Podcast
Jones Day Talks®: Patent Litigation, PTAB, Iancu's Legacy, and Institution Discretion
[IP Hot Topics Podcast] Innovation Conversations: Andrei Iancu
Nota Bene Episode 99: Unpacking the Pendulum of American Patent Policy Then, Now, and Forward with Rob Masters
A set of recently issued memoranda by United States Patent and Trademark Office (“USPTO”) officials has re-energized the debate around discretionary denials in post-grant trials at the Patent Trial and Appeal Board (“PTAB”)....more
On June 9, 2025, the Patent Trial and Appeal Board (“Board”) issued a Final Written Decision (“FWD”) in Merck’s IPR2024-00240 against The Johns Hopkins University’s (“JHU”) U.S. Patent No. 11,591,393 (“the ’393 patent”),...more
The Federal Circuit recently resolved a split among the district courts whether patent infringement defendants who bring inter partes review (IPR) challenges are estopped from raising new prior art challenges in a co-pending...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
The USPTO Director vacated the board’s decision to institute inter partes review based on an erroneous application of the Fintiv factors. Specifically, the Director found that the board placed too much emphasis on...more
In what is certain to become a landmark decision, the Federal Circuit has resolved a long-standing question that divided patent litigators and judges alike: does IPR estoppel apply to physical systems (“system art”) described...more
Hosted by ACI, 18th Annual Paragraph IV Disputes Conference returns to New York City for another exciting year with curated programming that not only addresses the hot topics, but also puts them within the context of pre-suit...more
Recently, Cloudflare Inc. succeeded in convincing the PTAB to institute in IPR2021-00969 against a Sable Network, Inc.’s patent directed toward data flow. While the institution itself is not out of the ordinary—the...more
Year-End Analysis and Future Forecasts on the Most Significant Developments Impacting Post-Grant Proceedings. Attend ACI’s inaugural PTAB Practice Briefing virtually on December 2nd for in-depth discussions and year-end...more
The authors have recently proposed alternative analyses for the discretionary denial of IPR and PGR petitions involved in parallel district court litigation, as well as for the discretionary denial of serial petitions filed...more
In 2012, Congress enacted the American Invents Act (“AIA”) for the purpose of “establish[ing] a more efficient and streamlined patent system that will improve patent quality and limit unnecessary and counterproductive...more
We’ve previously written that the best defense to an IPR challenge is avoiding IPR institution altogether. In addition to the other tips discussed in this series of posts, another strategy for avoiding institution is focusing...more
This month we first refresh our readers on Shaw and SAS, and then we will look at two recent exemplary cases that we feel are illustrative of the current trends for petitioner estoppel. We will show that the trend in the...more
As we demonstrated in our own successful appeal, Arendi S.A.R.L. v. Apple Inc. (Fed. Cir. 2016), a petition for inter partes review (“IPR”) may fail when an expert declaration lacks detailed explanation. An expert’s...more
On April 7, 2020, the Patent Trial and Appeal Board (PTAB) clarified what evidence can demonstrate that an asserted reference qualifies as a printed publication. This two-section article will first address four decisions...more
A petition to institute an inter partes review (IPR) can only be filed on the basis of prior art consisting of patents and printed publications. But what makes a reference a “printed publication”? On December 20, 2019, the...more
On December 20, 2019, the Precedential Opinion Panel (POP) of the Patent Trial and Appeal Board (PTAB) issued its decision in IPR2018-01039, addressing “What is required for a petitioner to establish that an asserted...more
When faced with allegations of patent infringement at the International Trade Commission (ITC), a respondent must quickly evaluate whether or not to request an AIA review (hereinafter, inter partes review for convenience) at...more
There is no doubt that “the potential for estoppel is one of the important considerations for defendants in deciding whether or not to file an [inter partes review (“IPR”)] petition.” Shaw Indus. Grp., Inc. v. Automated Creel...more
The PTAB denied Apple’s motion to withdraw both its IPR petition and concurrent motion for joinder to prevent Apple from circumventing potential estoppel ramifications in Apple Inc. v. Papst Licensing GmbH & Co. KG,...more
When a patent is challenged in an inter partes review and a final written decision has been issued, a statutory estoppel will prevent certain subsequent proceedings. The scope of the estoppel, which applies to both Patent and...more