News & Analysis as of

Patent Invalidity United States Patent and Trademark Office Patent Validity

Mintz - Intellectual Property Viewpoints

The PTAB Pendulum Swings: How IPR Denials are Reshaping Patent Owner and Challenger Strategies

Post-grant proceedings at the Patent Trial and Appeal Board (PTAB) are undergoing sweeping transformation. Over the past year, as other federal agencies have grown cautious to avoid further budget constraints and downsizing,...more

McCarter & English, LLP

Navigating the Landscape of Patent Challenges at the USPTO

Challengers striving to beat higher-ranked opponents at the US Open tennis tournament happening now in New York are not the only challengers facing tricky new situations. Parties wishing to challenge the validity of US...more

King & Spalding

USPTO Acting Director Stewart Limits Use of General Knowledge in IPR Petitions

King & Spalding on

On July 31, 2025, Acting USPTO Director Coke Morgan Stewart released a memo instructing the agency “that applicant admitted prior art (AAPA), expert testimony, common sense, and other evidence that is not ‘prior art...more

McCarter & English, LLP

New Patent Office Guidance Raises Bar for IPR Petitioners

The Patent Office recently announced that it will begin enforcing a rule that requires that inter partes review (IPR) petitions “specify where each element of the claim is found in the prior art patents or printed...more

Holland & Knight LLP

New Guidance Regarding Fintiv Discretionary Denial at the PTAB

Holland & Knight LLP on

Two recent memoranda from the Patent Trial and Appeal Board (PTAB or Board) have sought to clarify the factors by which boards will evaluate discretionary denial under Fintiv. This guidance follows the U.S. Patent and...more

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

PTAB Strategies and Insights - July 2021

[co-author: Jay Bober, Summer Associate] 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...more

Knobbe Martens

Assignor Estoppel Does Not Preclude Reliance on Invalidity Decision

Knobbe Martens on

HOLOGIC, INC. v. MINERVA SURGICAL, INC. Before Wallach, Clevenger, and Stoll. Appeals from the United States District Court District of Delaware. Summary: The doctrine of assignor estoppel precludes an assignor from...more

Mintz - Intellectual Property Viewpoints

Evidence of Bad Faith Patent Prosecution Can Support an Award of Attorney Fees

A recent opinion from the District of New Jersey is a cautionary tale for patent practitioners regarding conduct during patent prosecution that can be framed as bad faith. This can become an expensive misstep during...more

Jones Day

No Stay of Remedial Orders Even After PTAB Finds Claims Unpatentable

Jones Day on

The ITC has dealt a significant blow to the use of Inter Partes Review as a defense to a Section 337 investigation. In an order issued this week, the Commission denied a request to stay remedial orders that are currently on...more

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