This episode concerns a decision from the United States Court of Appeals for the Federal Circuit regarding Centripetal Networks, LLC v. Palo Alto Networks, Inc. et al., decided on October 22, 2025. The core of the case involves Centripetal Networks appealing a decision by the Patent Trial and Appeal Board (PTAB) that held certain claims of their patent unpatentable as obvious. A significant issue addressed is Centripetal’s claim that the PTAB’s decision was "tainted" due to the belated recusal of an administrative patent judge (APJ) who held stock in one of the appellees, Cisco Systems, Inc. While the court affirmed that the APJ’s minimal financial interest did not violate ethics rules, it ultimately vacated the PTAB’s final decision and remanded the case because the Board failed to adequately consider Centripetal’s evidence of copying by Cisco.

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