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United States Patent and Trademark Office › Estoppel › Patent Litigation

The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.... more +
The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.    less -
Jones Day

Federal Circuit Clarifies Scope of Patent Owner Estoppel

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The Federal Circuit recently issued a decision in SoftView LLC v. Apple Inc. clarifying the scope of patent owner estoppel set forth in 37 C.F.R. § 42.73(d)(3)(i). 2024 WL 3543902 (Fed. Cir. July 26, 2024). The regulation...more

Dinsmore & Shohl LLP

Estoppel Principles in Patent Office Proceedings

Dinsmore & Shohl LLP on

On July 26, 2024, in a precedential decision, the U.S. Court of Appeals for the Federal Circuit (CAFC) upheld and expounded on the estoppel provision set forth in 37 C.F.R. § 42.73(d)(3)(i). The CAFC confirmed that the Patent...more

WilmerHale

Federal Circuit Patent Watch: Ordering In-Person Appearance to Testify Regarding Potential Fraud on the Court is within Court's...

WilmerHale on

Precedential and Key Federal Circuit Opinions - 1.  BACKERTOP LICENSING LLC [OPINION] (23-2367, 23-2368, 24-1016, 24-1017 Prost, Hughes, and Stoll) - Hughes, J. The Court affirmed the District Court’s orders (1)...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2023 PTAB Year in Review: Editors’ Introduction

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

A review of 2023 reveals it was an active and impactful year in shaping the policy and practice before the Patent Trial and Appeal Board (PTAB or Board) at the U.S. Patent and Trademark Office (USPTO). In fact, all three...more

Fish & Richardson

2023 Post-Grant Annual Report

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2023 was a busy year at the Patent Trial and Appeal Board, as post-grant practice continued to evolve at a rapid pace. At the United States Patent and Trademark Office, there were big developments in Director Review and...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

[Webinar] Developments in IPR Estoppel - December 5th, 1:00 pm - 2:00 pm EST

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Director Jason A. Fitzsimmons and Counsel Richard A. Crudo will present the “Developments in IPR Estoppel” webinar on Tuesday, December 5, 2023, at 1:00 PM ET. The possibility of being estopped from asserting prior art in...more

Jones Day

PTAB Doubles Down on Interference Estoppel Issue

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The Patent Trial and Appeal Board held all challenged claims of IGT’s patent unpatentable as obvious over two prior art patents. Zynga Inc. v. IGT, IPR2022-00199-32. In doing so, the PTAB further held that, contrary to...more

Haug Partners LLP

The Many Flavors of Inter Partes Review Estoppel: A Review and Update

Haug Partners LLP on

I. Introduction - The Leahy-Smith America Invents Act (“AIA”) was years in the making.  From the first patent reform bill introduced by Representative Lamar Smith in June 20052 until the final House and Senate debates in...more

Rothwell, Figg, Ernst & Manbeck, P.C.

The PREVAIL Act – Does it Unfairly Hinder Patent Challengers’ Possibility of Prevailing at the PTAB?

Rothwell, Figg, Ernst & Manbeck, P.C. on

The Promoting and Respecting Economically Vital American Innovation Leadership (PREVAIL) Act was introduced on June 22, 2023, with the aim to reform the U.S. Patent Trial and Appeal Board (PTAB). The PREVAIL Act serves as a...more

Fish & Richardson

Texas Patent Litigation Monthly Wrap-Up: April 2023

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Four subjects stood out in patent litigation in Texas in April 2023: (1) applicability of the customer-suit exception to the first-to-file rule; (2) the level of ties a reasonable royalty methodology must have to the facts of...more

Locke Lord LLP

The Party Seeking IPR Estoppel Bears ‎the Burden to Prove Non-Petitioned Invalidity Grounds ‎‎Reasonably Could Have Been Raised

Locke Lord LLP on

In the April 3, 2023 decision in Ironburg Inventions Ltd. v. Valve Corporation, 21-2296, Doc. 66, the Federal Circuit provides crucial guidance regarding inter partes review (IPR) estoppel under 35 U.S.C. § 315(e)(2). In...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions

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As part of the recovery from the global COVID-19 pandemic, the U.S. Court of Appeals for the Federal Circuit took steps to return to normal operations. It began requiring live oral arguments in August 2022 and, by November,...more

McDermott Will & Emery

[Ongoing Program] PTAB Session: Strategic Considerations Before Filing IPR Petitions - April 21st, 10:00 am - 11:00 am JST

McDermott Will & Emery on

We are committed to providing insightful commentary on IP developments from around the world to our Japanese clients. In light of that effort, we are continuing our free monthly webinar series, McDermott IP Focus. During...more

McDermott Will & Emery

No Mulligans Here: PTO Rewinds Reexamination Based on Estoppel

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The US Patent & Trademark Office (PTO) terminated a pending ex parte reexamination after finding that the challenger was estopped because the prior art references could have been raised in a prior inter partes review (IPR)....more

Jones Day

Director Reviews Institution Decision Involving Interference Estoppel

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In Zynga Inc. v. IGT, IPR2022-00199, the USPTO Director, Kathi Vidal, sua sponte granted review and affirmed the decision instituting trial over patent owner’s argument that the Board erred in its application of interference...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends: The Resurgence and Perils of Ex Parte Reexaminations

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Ex parte reexaminations have re-emerged as an increasingly important component of patent litigation and licensing negotiations. With the passage of the America Invents Act (“AIA”) and the advent of inter partes reviews...more

McDermott Will & Emery

What Preclusion? Post-IPR Reexam Moves Forward

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The US Court of Appeals for the Federal Circuit revived a petitioner’s validity challenge seeking ex parte review at the US Patent & Trademark Office (PTO), reversing a district court decision dismissing its complaint seeking...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends: Editors' Introduction

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

Love it or hate it, ignore the USPTO Patent Trial and Appeal Board (PTAB) at your peril. The introduction of the PTAB as part of the America Invents Act over ten years ago has forever changed patent litigation. In its first...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2021 PTAB Year in Review: Analysis & Trends

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

[co-author: Jamie Dohopolski] Love it or hate it, ignore the USPTO Patent Trial and Appeal Board (PTAB) at your peril. The introduction of the PTAB as part of the America Invents Act over ten years ago has forever changed...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Case - February 2022 #3

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Alarm.com Inc. v. Hirshfeld, Appeal No. 2020-2102 (Fed. Cir. Feb. 24, 2022)- In an appeal from the U.S. District Court for the Eastern District of Virginia, the Federal Circuit addressed whether the ex parte reexamination...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions: Introduction

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

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 exception. It briefly returned to live...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

[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

American Conference Institute (ACI)

[Virtual Conference] PTAB Practice Briefing - December 2nd, 10:00 am - 6:00 pm EST

American Conference Institute (ACI) on

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

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Strategies and Insights Newsletter - June 2021

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[co-authors: Patrick Murray, Risa Rahman, and Jae Bandeh] The PTAB Strategies and Insights newsletter provides timely updates and insights into how best to handle proceedings at the USPTO. It is designed to increase return...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Strategies and Insights - May 2021

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The PTAB Strategies and Insights newsletter provides timely updates and insights into how best to handle proceedings at the USPTO. It is designed to increase return on investment for all stakeholders looking at the entire...more

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