PTAB challenges

Proceedings overview

There are two AIA trial proceedings on file for US Patent 11,687,971. One proceeding (IPR2025-01183) was denied institution, and the other (IPR2025-01051) was terminated due to settlement. This outcome suggests a strengthened defensive posture for the patent owner, as no claims have been invalidated through PTAB trials, and the patent has survived one institution challenge.

IPR2025-01183 — Google LLC v. James A. Proctor JR. et al

• Type: Inter Partes Review
• Filed: 2025-07-02
• Status: Institution Denied. The PTAB declined to initiate a trial.
• Judge panel: Judge Caldwell, Judge Daniels, Judge Bunt.
• Petition grounds: Google LLC challenged claims 1-20 of US Patent 11,687,971, asserting obviousness under 35 U.S.C. § 103 based on various combinations of prior art, including US Patent 7,937,078 (Proctor), US Patent Application Publication 2008/0182591 (Kashgari), US Patent Application Publication 2004/0073619 (Srinivasan), and US Patent 7,123,927 (Lim).
• Institution decision: Denied (2026-02-19). The panel found that the petition did not demonstrate a reasonable likelihood that Google would prevail with respect to any of the challenged claims. Specifically, the Board determined that Google failed to establish obviousness over the asserted prior art combinations.
• Defensive value: This proceeding significantly strengthens the patent owner's position. The denial of institution means that claims 1-20 of US11687971 have been found by the PTAB not to be likely obvious over the specific art and arguments presented by Google. An IPR-based defense using these or similar grounds will face an uphill battle.

IPR2025-01051 — [[[Samsung Electronics Co.](/litigations/by-defendant/Samsung%20Electronics%20Co.), Ltd.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.) et al.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%2C%20Ltd.%20et%20al.) v. James A. Proctor JR. et al

• Type: Inter Partes Review
• Filed: 2025-05-30
• Status: Terminated-Settled. The parties reached a settlement agreement, and the proceeding was concluded without a final written decision.
• Judge panel: Judge Caldwell, Judge Daniels, Judge Bunt.
• Petition grounds: Samsung Electronics Co., Ltd. et al. challenged claims 1-20 of US Patent 11,687,971, alleging obviousness under 35 U.S.C. § 103 over various combinations of prior art, including US Patent 7,937,078 (Proctor), US Patent 7,224,965 (Proctor), US Patent Application Publication 2008/0182591 (Kashgari), and US Patent 7,123,927 (Lim).
• Settlement / termination: The proceeding was terminated on 2025-08-27 due to a settlement between the parties. The specific terms of the settlement are confidential.
• Defensive value: While the claims were not adjudicated, the settlement indicates that the petitioner chose to resolve the matter outside of a full PTAB trial. This does not invalidate any claims but suggests a potential agreement was reached between the parties regarding the patent. The grounds raised in this petition are subject to estoppel for Samsung and its privies.

Strategic summary

No claims of US Patent 11,687,971 have been canceled through PTAB proceedings. All claims (1-20) remain sustained and untested by a final written decision. The patent owner successfully defended against an institution attempt by Google LLC, where the PTAB found Google did not demonstrate a reasonable likelihood of prevailing on obviousness challenges to claims 1-20. The IPR filed by Samsung Electronics Co., Ltd. et al. was terminated via settlement, meaning no substantive ruling on the patentability of the claims was issued.

The estoppel landscape is now defined by the resolution of these two IPRs. Google LLC and its privies are estopped under § 315(e)(2) from asserting invalidity grounds in future proceedings that they raised or reasonably could have raised in IPR2025-01183 against claims 1-20. Similarly, Samsung Electronics Co., Ltd. and its privies are estopped from raising grounds they raised or reasonably could have raised in IPR2025-01051 against claims 1-20, as their proceeding was terminated after institution but before a final written decision. This narrows the available prior-art grounds for these specific entities.

There are no clear "pattern signals" of aggressive PTAB appeals by the patent owner, as no final written decisions were issued to appeal. The presence of Google and Samsung as petitioners indicates the patent is being asserted against major technology companies. Unified Patents is not listed as a petitioner in either proceeding.

Recommended next steps

For a defendant facing assertion of this patent today, the primary takeaway is that all claims (1-20) of US Patent 11,687,971 remain valid and unadjudicated by a final PTAB decision. The denial of institution for IPR2025-01183 by Google LLC is a significant hurdle, as the PTAB found the obviousness arguments lacking at the institution stage. Any new IPR petition would need to present substantially different prior art or significantly stronger arguments to overcome the Board's reasoning in the Google denial.

If considering an IPR, carefully review the Institution Decision for IPR2025-01183 to understand the PTAB's reasoning for denying institution, available here: https://developer.uspto.gov/ptab-documents/documents/IPR2025-01183/10. This will inform the selection of prior art and the construction of obviousness arguments to avoid similar pitfalls.

No active proceedings are pending.