In a recent precedential decision by the Federal Circuit, the Court delivered a cautionary reminder that errors or omissions in a provisional patent application can have significant consequences for a patent’s priority claim and ultimately its validity. In Enanta Pharmaceuticals, Inc. v. Pfizer, Inc., No. 2025-1427 (Fed. Cir. June 23, 2026), the Federal Circuit affirmed … Continue Reading
After over a decade of litigating, winning multiple appeals and inter partes review (IPR) proceedings, and finally earning a $185 million jury verdict against cybersecurity giant Gen Digital Inc. that operates the Norton antivirus brand, Columbia University saw a massive setback with last week’s Federal Circuit opinion. The opinion touched on several topics in modern … Continue Reading
As the 2026 Winter Olympics captivate audiences, one sport in particular―curling―stands out as the perfect metaphor for the challenge of prosecuting AI inventions before the US Patent and Trademark Office (USPTO). Both arenas demand foresight, adaptability, and strategic thinking, whether it’s guiding a stone across the ice or shepherding an AI patent application through evolving … Continue Reading
Readers will recall that the Deputy Commissioner for Patents issued a memorandum on evaluating patent claims for subject matter eligibility in August, which we blogged about previously. The August 2025 Memorandum noted that a patent application “does not need to explicitly set forth the improvement [to the functioning of a computer or to another technology … Continue Reading
As readers may recall, in February 2024, the USPTO issued guidance on inventorship in AI-assisted inventions, which we wrote about here. On November 26, 2025, the USPTO rescinded that guidance and replaced it with new guidance. By way of background, the February 2024 Guidance analyzed the naming of inventors for AI-assisted inventions using the Pannu … Continue Reading
Earlier this year, as we discussed here, here, and here, the United States Patent and Trademark Office (USPTO or Office) proposed a number of sweeping changes to the Office’s patent fees, including a very steep set of fees for filing terminal disclaimers, later continuation applications, and three or more requests for continued examination (RCEs). The … Continue Reading
When a patent application is allowed, the claims may not precisely cover everything that the applicant wants to protect. Rather than add new claims after a notice of allowance and prolong prosecution, applicants will commonly file one or more continuation applications to pursue different claims. The continuation has substantially the same specification and drawings as … Continue Reading
On March 18, 2024, the United States Patent and Trademark Office (USPTO) issued a Memorandum containing guidance to help patent examiners analyze claim language that may be interpreted as “means-plus-function” or “step-plus-function” language under 35 U.S.C. § 112(f). The USPTO said that the Memorandum was not a change in practice for examiners. Sometimes, however, how something … Continue Reading
