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.

ATT Services, Inc. has launched a new inter partes review at the Patent Trial and Appeal Board, filing IPR2026-00348 on May 5, 2026.

ATT Services, Inc. has launched a new inter partes review at the Patent Trial and Appeal Board, filing IPR2026-00349 on May 5, 2026. At this early stage, the proceeding is notable less for any merits ruling and more for what it signals: another major operating company turning to the PTAB as part of a broader patent-defense playbook.

Based on the case caption, ATT Services, Inc. is the petitioner.

Microsoft Corporation has filed a new inter partes review petition against QOMPLX LLC at the Patent Trial and Appeal Board, opening a fresh front in what could become an important dispute over patent validity and competitive positioning. The case, Microsoft Corporation v. Qomplx LLC, was filed on April 7, 2026, and is docketed as IPR2026-00325.

At this stage, the PTAB docket reflects the filing of the petition, with Microsoft as petitioner and QOMPLX as patent owner.

Apple Inc. has filed a new inter partes review petition at the Patent Trial and Appeal Board, opening IPR2026-00332 on April 3, 2026. At this stage, the public docket identifies Apple as the petitioner, but practitioners should note that early PTAB dockets often reveal only limited information until the petition, exhibits, and mandatory notices are fully available.

Based on the current case listing, the key immediate takeaway is that Apple is asking the Board to reconsider the validity of at least one issued patent through the PTAB’s trial system.

Toyota Motor Corporation has filed a new inter partes review petition at the Patent Trial and Appeal Board, opening proceeding IPR2026-00333 on April 7, 2026. The filing places at issue the validity of a patent that, while not identified in the docket caption itself, is now the subject of a formal PTAB challenge by one of the world’s largest automotive companies. For patent owners and accused infringers alike, that alone makes this proceeding worth watching closely.

At this stage, the key public-facing details are the petitioner, the forum, and the timing.