Federal Circuit Vacates in Part, Affirms in Part PTAB Ruling in Cisco IPR

The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a decision today in Zilkr Cloud Technologies, LLC v. Cisco Systems, Inc., vacating in part and affirming in part a Patent Trial and Appeal Board (PTAB) final written decision. The PTAB had held claims 1, 2, 6 through 8, and 12 through 14 of a patent owned by Zilkr Cloud Technologies, LLC unpatentable as obvious, and the CAFC remanded for further proceedings. The opinion was authored by Chief Judge Moore.

PTAB Designates Stakeholder-Nominated Ruling on Flexible Markush Analysis as Informative

Yesterday, the U.S. Patent and Trademark Office (USPTO) announced that the agency had designated as informative a Patent Trial and Appeal Board (PTAB) decision in an ex parte appeal reversing an examiner’s rejection of patent claims directed to the isolation and detection of microRNA (miRNA) to determine a patient’s risk of radiation exposure for improper Markush groupings. Drawing primarily upon case law from the predecessor to the U.S. Court of Appeals to the Federal Circuit, the informative designation is notable for its alignment with recent Federal Circuit case law encouraging flexibility in Markush grouping analyses.

Why High-Quality U.S. Patent Specifications Face Fatal Failures in China

In 2025, a patent dispute between Chinese companies in the camera-module space drew close attention across the industry — SUNNY v. AAC [Patent Reexamination and Invalidation Department Decision No. 566288, et al.]. The case ended with 11 patents invalidated, four of them in their entirety. There was a single reason: the claims were not supported by the specification.

Commenters Split on USPTO Proposal to Require RPI Disclosure for Reexams

Following the U.S. Patent and Trademark Office’s (USPTO’s) July 2026 proposal to require third-party requesters for ex parte reexamination (EPR) to identify all real parties in interest (RPIs), the 26 comments submitted to the Office reveal a sharp divide among the patent owners, tech companies, industry associations and individuals who weighed in. The comment period closed August 21, and the commenters included 17 organizations, associations or companies and 8 individuals (a duplicate comment was submitted by the Intellectual Property Owners Association (IPO).

WikiHow Files Lawsuit Against OpenAI Over ChatGPT’s Use of Its How-To Library

On August 21, wikiHow, Inc. filed a complaint in the U.S. District Court for the Southern District of New York against OpenAI, Inc. and eight affiliated entities, alleging violations of the Copyright Act and the Digital Millennium Copyright Act (DMCA). The lawsuit centers on claims that OpenAI copied wikiHow’s how-to articles without authorization to train ChatGPT and to ground its outputs, then used that copied content to generate substitutes for wikiHow’s website.

Nigeria Is Building the Next Global Economy: Is Your Intellectual Property Ready for It?

U.S. companies planning to enter Nigeria typically build a careful playbook for market research, distribution, hiring, and regulatory compliance. Intellectual property is often the item furthest down that list, treated as paperwork to handle once commercial activity is already underway. That sequencing is backwards, and it is worth understanding why.

Van Hoven PC is Seeking a Patent Agent/Patent Attorney

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