Palo Alto Networks, Inc. has filed a new inter partes review petition at the Patent Trial and Appeal Board, opening IPR2026-00362 on May 15, 2026. For patent litigators and in-house IP teams, this is the kind of proceeding worth watching early: even before the Board decides whether to institute review, the petition can offer a detailed roadmap of invalidity theories, claim-prioritization strategy, and the petitioner’s broader litigation posture.

At this stage, the publicly available case caption identifies Palo Alto Networks, Inc. as the petitioner, but the docket summary provided here does not specify the challenged patent number, the patent owner, or the exact unpatentability grounds asserted.