News & Analysis as of

Obviousness Estoppel Inter Partes Review (IPR) Proceeding

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

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

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions: California Institute of Technology v. Broadcom...

Caltech sued Broadcom and Apple for infringement, asserting three of its data transmission patents against Broadcom’s WiFi chips and certain Apple products that incorporate those chips. Apple then filed IPR petitions...more

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

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

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

Akin Gump Strauss Hauer & Feld LLP

D. Del.: Plaintiff’s Seeking Broader Construction in District Court Rather Than in Reexamination Does Not Preclude Reexamination...

In Victaulic Company v. ASC Engineered Sols., LLC, the District of Delaware ruled on summary judgment that ASC is estopped from asserting two obviousness grounds against a patent claim because it raised the same grounds...more

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

[Webinar] Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions - February 2nd, 1:00 pm - 2:00 pm EST

In conjunction with the release of the firm's year-in-review report, speakers will offer case summaries and analysis of the significant 2022 appellate rulings discussed in the report. Topics of the featured intellectual...more

WilmerHale

Federal Circuit Patent Watch: Assignor estoppel applies to claims that are not "materially broader" than the originally assigned...

WilmerHale on

Precedential Federal Circuit Opinions - In Re MCDONALD [OPINION] (2021-1697, 8/10/2022) (Newman, Stoll, and Cunningham) - Cunningham, J. The Court affirmed a PTAB decision rejecting reissue claims under 35 U.S.C. §...more

McDermott Will & Emery

Since Vacatur Seeks Equitable Relief, Clean Hands Matter

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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

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

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

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

[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

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

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

[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

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

PTAB Strategies and Insights - May 2021

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

Jones Day

Reminder: Estoppel May Not Preclude Prior-Art Systems

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The estoppel statute precludes a defendant who has challenged a claim in an IPR reaching final written decision from later challenging that claim on any ground that it raised or reasonably could have raised during the IPR...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - September 2020 #2

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

Knobbe Martens

Joining an IPR Triggers IPR Estoppel Only for Instituted Grounds

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NETWORK-1 TECHNOLOGIES, INC. v. HEWLETT-PACKARD COMPANY, HEWLETT PACKARD ENTERPRISE COMPANY - Before Prost, Newman, and Bryson. Appeal from the United States District Court for the Eastern District of Texas. Summary: A...more

Goodwin

Issue Twenty-Nine: PTAB Trial Tracker

Goodwin on

The availability of post-grant proceedings at the Patent Trial and Appeal Board (PTAB) has changed the face of patent litigation. This monthly digest is designed to keep you up-to-date by highlighting interesting PTAB,...more

Akin Gump Strauss Hauer & Feld LLP

No IPR Estoppel Despite Purportedly “Gratuitous” Inclusion of Physical Device in Invalidity Defenses

A district court has ruled that the statutory estoppel arising from an inter partes review (IPR) proceeding does not apply to anticipation and obviousness defenses that rely significantly on a physical device. The court also...more

Akin Gump Strauss Hauer & Feld LLP

Far-Reaching Effect of IPR Estoppel Dooms Invalidity Defense Based on Prior Art Product

Chief Judge Stark granted a patent owner’s motion for summary judgment of inter partes review (IPR) estoppel, holding that obviousness defenses based on a prior art product could not be asserted because a prior art...more

Akin Gump Strauss Hauer & Feld LLP

Calling a Printed Publication a “System” is Not Enough to Avoid IPR Estoppel

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

Foley & Lardner LLP

District Court Sheds Light on Scope of IPR Estoppel

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One area of estoppel arising from an unsuccessful AIA petition that remains poorly understood relates to prior art that is described both in a printed publication or patent and also was in use by others, such as to create...more

Knobbe Martens

Discretionary Denial as a Case Management Tool: PTAB Requires Petitioner to Rank its Six IPR Petitions by Merit and then...

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Following the Supreme Court’s decision in SAS v. Iancu, which held that an IPR institution is an “all-or-nothing” proposition, the PTAB lost its ability to rely on “partial institutions” as a case management tool (e.g., by...more

Jones Day

IPR Estoppel Applies Even After A Bench Trial On Validity

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In a recent decision, a district court in the District of Delaware applied estoppel under 35 U.S.C. § 315(e)(2) to a defendant in Hatch-Waxman litigation, two and half years after the court conducted a bench trial on...more

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

2019 Report: Federal Circuit Appeals from the PTAB - Summaries of Key 2018 Decisions

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

Jones Day

Update: Does § 315(e)(2) Say What It Means and Mean What It Says?

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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

Akin Gump Strauss Hauer & Feld LLP

Estoppel Applies to “Known or Used” Prior Art if PTAB Considered Corresponding Written References

A district court in California has granted-in-part a Plaintiff’s motion for summary judgment of no invalidity under 35 U.S.C. § 103 due to inter partes review (IPR) estoppel. During the pendency of the litigation, Defendants...more

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