News & Analysis as of

Post-Grant Review Patent-Eligible Subject Matter Patent Invalidity

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

U.S. IP Update – August 2025

Sterne Kessler’s U.S. IP Update is a newsletter delivering the latest developments in U.S. intellectual property law, tailored for companies and legal counsel in Korea. Stay informed on key court decisions, policy changes,...more

Farella Braun + Martel LLP

What Patent Bills Would Mean for Infringement Litigation

Two bills recently introduced in Congress could significantly affect the current patent litigation landscape. The bipartisan bills are titled the Patent Eligibility Restoration Act of 2023 and the Promoting and Respecting...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

Jones Day

PGRs Still Rare – Is Estoppel The Reason?

Jones Day on

A Post-Grant Review can be used to challenge newly-issued patents on wide-ranging grounds, but PGRs remain relatively unpopular: statutory estoppel may be a reason why....more

Jones Day

PGR Estoppel Applies to Unasserted Art

Jones Day on

Due to the relatively low number of post-grant reviews (“PGR”) filed to date, not many district courts have spoken on the scope of PGR estoppel. In GREE, Inc. v. Supercell Oy, No. 2:19-cv-00071 (E.D. Texas), Magistrate Judge...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

McDonnell Boehnen Hulbert & Berghoff LLP

Supreme Court Takes Pass on Considering IPR Constitutionality

There is little rhyme nor reason in the cases the Supreme Court decides to review. But the Court has patterns in its case selection that do (to some degree) probe what the Justices think are important questions. One pattern...more

Knobbe Martens

Federal Circuit Review - October 2019

Knobbe Martens on

The PTAB Cannot Approve or Deny Certificates of Correction - In Honeywell International, Inc. v. Arkema Inc., Arkema France, Appeal Nos. 2018-1151, -1153, the Patent Trial and Appeal Board (“Board”) does not have the...more

Akin Gump Strauss Hauer & Feld LLP

Invalidity Defenses Will Not Be Stricken at Pleading Stage Despite Defendant’s Earlier PGR Petition

A district court has denied a patent owner’s motion to strike wholesale a defendant’s affirmative defense of invalidity. The key issue in the motion to strike was the application of the estoppel provision of 35 U.S.C. §...more

McDermott Will & Schulte

Post-Grant Review May Be Used to Invalidate Patents Directed to Patent-Ineligible Subject Matter

Addressing patent-eligible subject matter issues, the Patent Trial and Appeal Board (PTAB or Board) issued a final written decision in a post-grant review (PGR) finding all claims of a newly issued patent unpatentable under...more

McDonnell Boehnen Hulbert & Berghoff LLP

Netsirv v. Boxbee, Inc. (PTAB 2016)

A post grant review (PGR) is an administrative reconsideration of a recent-granted U.S. patent. The proceeding is held in the USPTO, before that body's Patent Trial and Appeal Board. A petition for PGR is timely if it is...more

Troutman Pepper

Federal Circuit Affirms Invalidity Of A Merck Patent Based On Substantial Evidence Standard

Troutman Pepper on

In a recent case, the Court of Appeals for the Federal Circuit affirmed the PTAB’s decision that certain claims of Merck’s U.S. Patent No. 6,011,040, which were challenged by Gnosis, were invalid as anticipated or obvious....more

McDermott Will & Emery

PTAB Institutes Very First Post-Grant Review (PGR) - American Simmental Association v. Leachman Cattle of Colorado, LLC

Representing the first decision of its kind, the Patent Trial and Appeal Board (PTAB or Board) instituted the first post-grant review (PGR) under the American Invents Act (AIA). American Simmental Association v. Leachman...more

McDonnell Boehnen Hulbert & Berghoff LLP

Versata Development Group, Inc. v. SAP America, Inc. (Fed. Cir. 2015)

Section 18 of the Leahy-Smith America Invents Act (AIA) established a transitional program through which the USPTO conducts post-grant reviews of covered business method (CBM) patents. For the most part, § 18 incorporates...more

Foley & Lardner LLP

Federal Circuit Reverses Unreasonable PTAB Claim Construction, Upholds Idle Free Standard for Motions to Amend

Foley & Lardner LLP on

The Federal Circuit decision in Microsoft Corp. v. Proxyconn, Inc., addressed several important issues relating to post-grant patent trials conducted by the USPTO Patent Trial and Appeal Board (PTAB), including the PTAB’s...more

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