Palo Alto Networks, Inc. has filed a new inter partes review petition at the Patent Trial and Appeal Board, opening PTAB proceeding IPR2026-00364 on May 15, 2026. At this stage, the filing itself is the key development: the petition signals that Palo Alto Networks is seeking to invalidate claims of an asserted patent through the Board’s administrative trial process rather than litigating patentability exclusively in district court.

The currently available docket information identifies Palo Alto Networks, Inc. as the petitioner, but practitioners will want to watch closely for the patent owner’s appearance, the specific patent number at issue, and the claim set Palo Alto Networks has targeted.

Palo Alto Networks, Inc. has filed a new inter partes review petition at the Patent Trial and Appeal Board, opening IPR2026-00364 on May 15, 2026. At this stage, the case is notable less for any Board rulings—which have not yet issued—and more for what it may signal about the company’s broader patent defense strategy and the types of prior art and validity theories likely to be tested at the PTAB.

Based on the currently available docket information, Palo Alto Networks is the named petitioner.

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.