PTAB challenges

Proceedings overview

There is currently one AIA trial proceeding on file for US Patent 11100184. This proceeding is active and pending, with the status of the claims yet to be determined. The bottom-line defensive posture for a defendant is that the patent is currently undergoing an Inter Partes Review, which presents an opportunity for potential invalidation of claims.

IPR2026-00288 — Google LLC v. Robert Osann JR.

• Type: Inter Partes Review
• Filed: 2026-03-13
• Status: Pending. The proceeding is ongoing, and no final decision has been reached.
• Judge panel:
• Petition grounds:
• Institution decision: The institution decision deadline for IPR2026-00288 is 2026-09-13.
• Final Written Decision: Not yet issued, as the proceeding is pending.
• Settlement / termination: Not applicable, as the proceeding is pending.
• Appeal: Not applicable, as no Final Written Decision has been issued.
• Defensive value: This active IPR presents a direct challenge to the patent's claims. Depending on the outcome of the institution decision and subsequent Final Written Decision, claims may be invalidated, significantly impacting any assertion of this patent. A defendant facing assertion should closely monitor this proceeding for potential strategic opportunities.

Strategic summary

As of today, US Patent 11100184 has all its claims currently untested by a final PTAB decision. The single Inter Partes Review, IPR2026-00288, is still in the pre-institution phase. This means no claims have been canceled or sustained by the PTAB yet.

Regarding the estoppel landscape, if IPR2026-00288 is instituted, the petitioner (Google LLC) and its privies would be estopped under § 315(e)(2) from raising any ground they raised or reasonably could have raised in the IPR against the patent in future district court litigation or other PTAB proceedings, for any claims that are ultimately found patentable. For other potential defendants, prior-art grounds not raised or institutable in this IPR would still be available.

The filing of IPR2026-00288 by Google LLC indicates that a significant player in the tech industry sees potential vulnerabilities in patent US11100184. The petitioner, Google LLC, is a major operating company. Robert Osann JR. is listed as the inventor, and Accusearch Technologies LLC is the current assignee. Unified Patents has also filed litigation in Delaware District Court and another PTAB case (IPR2026-00288). This suggests a pattern of defensive action against the patent.

Recommended next steps

• The institution decision for IPR2026-00288 is due by 2026-09-13. It is crucial to monitor the outcome of this decision, as it will determine whether the PTAB proceeds to a full trial on the merits of the challenged claims. Access to the petition and any preliminary responses would provide insight into the specific claims challenged and the prior art asserted. Further information on the proceeding can be found on the USPTO PTAB E2E portal.
• If the IPR is instituted, track the trial schedule, including the oral hearing and the statutory one-year deadline for the Final Written Decision, which would be approximately 2027-09-13 if instituted in September 2026.
• Given that the IPR is still pending, the claims of US11100184 are currently considered valid until proven otherwise. Any demand letters citing these claims should be evaluated in light of the ongoing IPR.
• Review the claims of US11100184 to understand their scope and how they might relate to any potential infringement theories.## Proceedings overview
  There is currently one AIA trial proceeding on file for US Patent 11100184. This proceeding is active and pending, with the status of the claims yet to be determined. The bottom-line defensive posture for a defendant is that the patent is currently undergoing an Inter Partes Review, which presents an opportunity for potential invalidation of claims.

IPR2026-00288 — Google LLC v. Accusearch Technologies LLC

• Type: Inter Partes Review
• Filed: 2026-03-13
• Status: Pending. The proceeding is ongoing, and no final decision has been reached. The last modification to this case was on 2026-05-18.
• Judge panel: The specific judge panel for this IPR is not publicly available in the provided data.
• Petition grounds: The detailed petition grounds, including specific claims challenged, prior art cited, and statutory basis (§ 102 / § 103 / § 112), are not publicly available in the provided data. IPRs typically allow challenges based on prior art consisting of patents and printed publications under § 102 or § 103.
• Institution decision: Not yet issued. The institution decision deadline for IPR2026-00288 is 2026-09-13 (six months from the filing date).
• Final Written Decision: Not yet issued, as the proceeding is pending.
• Settlement / termination: Not applicable, as the proceeding is pending.
• Appeal: Not applicable, as no Final Written Decision has been issued.
• Defensive value: This active IPR presents a direct challenge to the patent's claims. Depending on the outcome of the institution decision and subsequent Final Written Decision, claims may be invalidated, significantly impacting any assertion of this patent. A defendant facing assertion should closely monitor this proceeding for potential strategic opportunities.

Strategic summary

As of today, US Patent 11100184 has all its claims currently untested by a final PTAB decision. The single Inter Partes Review, IPR2026-00288, is still in the pre-institution phase. This means no claims have been canceled or sustained by the PTAB yet.

Regarding the estoppel landscape, if IPR2026-00288 is instituted and proceeds to a final written decision, the petitioner (Google LLC) and its privies would be estopped under § 315(e)(2) from raising any ground they raised or reasonably could have raised in the IPR against the patent in future district court litigation or other PTAB proceedings, for any claims that are ultimately found patentable. For other potential defendants, prior-art grounds not raised or institutable in this IPR would still be available.

The filing of IPR2026-00288 by Google LLC indicates that a significant player in the tech industry sees potential vulnerabilities in patent US11100184. The current assignee, Accusearch Technologies LLC, acquired the patent on 2025-03-18. The fact that Google LLC, a major operating company, is the petitioner, alongside other litigation noted in the patent's history (a US case filed in Delaware District Court and a PTAB case IPR2026-00288 filed by Unified Patents, though only Google is listed as petitioner in the provided PTAB proceedings data), suggests a concerted defensive effort against this patent. The USPTO Director, John Squires, has taken over all IPR institution decisions since October 2025 and has also introduced new discretionary factors for institution as of March 11, 2026, which weigh domestic manufacturing presence and small business status. These new factors could influence the institution decision for IPR2026-00288.

Recommended next steps

• The institution decision for IPR2026-00288 is due by 2026-09-13. It is crucial for a defendant to closely monitor the outcome of this decision, as it will determine whether the PTAB proceeds to a full trial on the merits of the challenged claims.
• If the IPR is instituted, track the trial schedule, including the oral hearing and the statutory one-year deadline for the Final Written Decision, which would be approximately 2027-09-13.
• Given that the IPR is still pending, the claims of US11100184 are currently considered valid until proven otherwise. Any demand letters citing these claims should be evaluated in light of the ongoing IPR.
• Review the claims of US11100184 to understand their scope and how they might relate to any potential infringement theories.