In Memoriam: John F. Witherspoon

John F. Witherspoon, who passed away September 25, 2026, had a stellar career in patent law that spanned more than 50 years. He was devoted to private law practice, government service, and law school teaching. He was a beloved mentor to countless students and younger lawyers and an inspiration to all who knew him.

Federal Circuit Upholds PTAB Enablement Finding Against Dual Herbicide-Degrading Enzyme Patent

The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a decision Friday in Pioneer Hi-Bred International, Inc. v. Inari Agriculture, Inc. affirming a Patent Trial and Appeal Board (PTAB) final written decision that found claims 1 through 33 of a patent on herbicide-degrading enzymes unpatentable for lack of enablement. The CAFC rejected arguments that the PTAB improperly relied on experimental data generated after the patent’s priority date and abused its discretion in crediting an expert witness.

When Did Medical Innovation Become a Bad Thing?

Congress has been holding hearings on pharmaceutical patents and drug prices, along with U.S. Patent and Trademark Office (USPTO) fee-setting and oversight. During these hearings, America’s pharmaceutical innovators face an unusual criticism: They are accused of abusing the patent system not only when they invent new medicines, but also when they improve them.

Other Barks & Bites for Friday, October 2: Third Circuit Unseals AI Fair Use Ruling; U.S. Stays Third in WIPO GII 2026; and Apple Hit With $5.7 Billion Verdict for Haptic Tech Infringement

This week in Other Barks & Bites: the Federal Circuit affirms the invalidation of twist drill patent claims because the challenged patent could not claim priority to a parent patent application qualifying as prior art; the Third Circuit unseals its ruling against ROSS Intelligence’s fair use defense indicating some limitations to the decision’s holding in the generative AI context;

‘Indefiniteness is Not the Same as Impossibility,’ Says CAFC

The U.S. Court of Appeals for the Federal Circuit (CAFC) on Thursday issued a precedential decision affirming a finding of invalidity of certain claims of Satius Holding, LLC’s wireless communications patent, but holding that the district court’s reasoning, which focused on indefiniteness, was erroneous.

CAFC Says Trade Secret Owner Forfeited Tortious Interference, Damages Arguments

The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a decision today in Truinject Corp. v. Galderma S.A., affirming a U.S. District Court for the District of Delaware judgment for Galderma S.A. on tortious interference, breach of contract, and trade secret misappropriation claims. The CAFC held that Truinject Corporation forfeited its arguments on appeal about the dismissal of its tortious interference claim and the summary judgment of no damages.

The True Cost of Patent Infringement Litigation: Enforcement and Defense in a Complex Market

Patent infringement litigation is often discussed in terms of high-profile disputes or headline verdicts. What receives less attention is the cost of getting there. Whether a company is enforcing its patent rights or defending against a claim, the financial impact of patent litigation can be significant long before a case ever reaches trial. For many businesses, particularly those operating in technology-driven industries, patent litigation is no longer just a legal issue. It is a business consideration that can influence strategy, resource allocation and long-term planning.

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