PTAB challenges

Proceedings overview

Two AIA trial proceedings have been filed against US patent 11334918. Both were Inter Partes Reviews (IPRs) and neither resulted in claims being invalidated. One IPR was terminated due to a settlement, and institution was denied in the other. This indicates a hardened patent, as it has survived attempts to challenge its validity at the PTAB.

IPR2025-01181 — Google LLC v. James Arthur Proctor JR. et al

• Type: Inter Partes Review
• Filed: 2025-07-02
• Status: Institution Denied (The PTAB declined to initiate a full review of the patent claims.)
• Judge panel: Not publicly available in the provided information.
• Petition grounds: Not publicly available in the provided information.
• Institution decision: Denied. The PTAB denied institution on 2026-02-19. The specific reasoning for the denial is not detailed in the provided data.
• Final Written Decision: Not applicable, as institution was denied.
• Settlement / termination: Not applicable.
• Appeal: Not publicly available in the provided information.
• Defensive value: The patent owner successfully defended against this IPR, meaning the challenged claims were not reviewed for validity by the PTAB. This suggests a stronger patent against similar challenges.

IPR2025-01049 — [Samsung Electronics Co.](/litigations/by-defendant/Samsung%20Electronics%20Co.), Ltd et al. v. James Arthur Proctor JR. et al.

• Type: Inter Partes Review
• Filed: 2025-05-30
• Status: Terminated-Settled (The parties reached a settlement agreement, concluding the proceeding before a final decision on the merits.)
• Judge panel: Not publicly available in the provided information.
• Petition grounds: Not publicly available in the provided information.
• Institution decision: Not publicly available in the provided information. The proceeding status indicates it was terminated due to settlement on 2025-08-27.
• Final Written Decision: Not applicable, as the proceeding was terminated due to settlement.
• Settlement / termination: Terminated-Settled on 2025-08-27. The specific terms of the settlement are typically confidential.
• Appeal: Not applicable, as the proceeding was terminated due to settlement.
• Defensive value: This IPR did not result in any claims being invalidated as it was settled. While the details are confidential, it suggests that the petitioner opted to settle rather than pursue a final decision on validity.

Strategic summary

As of the current date, US patent 11334918 has no canceled claims. Both IPRs filed against the patent either resulted in a settlement (IPR2025-01049) or a denial of institution (IPR2025-01181). This means all claims of the patent, as originally granted, remain SUSTAINED or UNTESTED by a PTAB final written decision. Specifically, no claims have been identified as canceled.

The estoppel landscape is important here. For IPR2025-01181, where institution was denied, the petitioner (Google LLC) is barred from bringing the same or substantially the same prior art grounds in a subsequent PTAB petition or in a district court action. For IPR2025-01049, which settled, the petitioner (Samsung Electronics Co., Ltd et al.) and their privies are estopped under 35 U.S.C. § 315(e)(2) from asserting in other proceedings that a claim is invalid on any ground that was raised or reasonably could have been raised during the IPR. This significantly limits the prior art grounds available to these specific petitioners for future challenges. For a new defendant facing assertion, all prior-art grounds remain potentially available, assuming they are not in privy with the previous petitioners.

There is a pattern of large technology companies (Google LLC and Samsung Electronics Co., Ltd) challenging this patent. The fact that the patent owner has either achieved a settlement or a denial of institution suggests a robust defense strategy or a strong patent.

Recommended next steps

Since there are no invalidated claims for US11334918, a defendant facing assertion of this patent cannot rely on a prior PTAB cancellation of claims. The most recent proceeding, IPR2025-01181, had institution denied on 2026-02-19. While the specific reasoning for the denial is not provided, defendants would need to carefully analyze the petition and the institution decision (if made public on the USPTO PTAB E2E system) to understand why the Board found the grounds insufficient.