By Rose Esfandiari
Publication Date: 2026-08-26 20:23:00
“The Federal Circuit found no [APA] violation, noting the PTAB explained its construction of “utilized by” via reference to the patent’s claim language, detailed description, prosecution history, and separately explained why the prior art satisfied that limitation based on the record.”
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.
Cisco Systems, Inc. filed a petition for inter partes review (IPR) of the challenged claims of U.S. Patent No. 9,210,254, owned by Zilkr. The patent relates to a unified services platform that integrates…
