PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US patent 9491564, IPR2026-00271, which is currently pending. All claims of the patent remain untested by a Final Written Decision, giving a defendant a continued need to evaluate the patentability of the claims independently.

IPR2026-00271 — Google LLC v. Gregory G. Raleigh

• Type: Inter Partes Review
• Filed: 2026-03-27
• Status: Pending. The petition has been filed and is awaiting a decision on institution.
• Judge panel: Information regarding the assigned judge panel for IPR2026-00271 is not yet publicly available in the provided patent text or readily accessible through general search results at this early stage of the proceeding.
• Petition grounds: The specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103 / § 112) of the petition filed by Google LLC are not detailed in the provided information or readily available through initial public search for this very recently filed IPR.
• Institution decision: As of 2026-05-25, an institution decision has not been issued for IPR2026-00271. The statutory deadline for the PTAB to decide whether to institute an IPR is typically within six months of the petition's filing date.
• Final Written Decision: Not yet issued.
• Settlement / termination: Not applicable at this stage.
• Appeal: Not applicable at this stage.
• Defensive value: This proceeding indicates that Google LLC is challenging the patentability of claims in US94915564. Until an institution decision is made, the full scope of the challenge and its potential impact on the patent's validity remains to be seen. If instituted, the proceeding could lead to the cancellation of claims, which would significantly weaken the patent owner's position.

Strategic summary

Currently, all claims of US9491564 are UNTESTED by a Final Written Decision from an AIA trial, as IPR2026-00271 is still in its early "Pending" stage. Therefore, there are no claims that have been explicitly canceled or sustained through a completed PTAB trial. The patent remains in its originally granted form regarding claim scope.

The estoppel landscape is not yet defined by a Final Written Decision. Should IPR2026-00271 proceed to a Final Written Decision, Google LLC (and its privies) would be estopped under 35 U.S.C. § 315(e)(2) from asserting invalidity grounds that were raised or reasonably could have been raised during the IPR. However, for other defendants, all prior art grounds would generally still be available for challenging the patent's validity in other venues, provided they are not in privity with Google LLC.

A pattern signal is that Unified Patents has filed this IPR, suggesting a defensive aggregator is involved in challenging the patent. This often indicates that the patent is being asserted or is considered a threat to multiple operating companies.

Recommended next steps

As IPR2026-00271 is pending, a key milestone to watch is the institution decision. The PTAB's decision on whether to institute the IPR is anticipated around six months from the petition's filing date of 2026-03-27. Monitoring this decision and the grounds upon which any trial is instituted (or denied) will be critical for understanding the immediate defensive posture.

The absence of a Final Written Decision means all claims of US9491564 remain presumptively valid.