PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US patent 10911186, which is currently active with trial instituted. This means the patent owner is actively defending the patent, and the validity of the challenged claims is still under review.

IPR2025-01111 — [[[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. Wilus Institute of Standards and Technology Inc

• Type: Inter Partes Review
• Filed: 2025-06-09
• Status: Trial Instituted (The PTAB has determined that the petition demonstrates a reasonable likelihood that at least one challenged claim is unpatentable, and a trial has been initiated.)
• Judge panel: Not yet publicly available.
• Petition grounds: Not yet publicly available.
• Institution decision: Instituted. Date and reasoning are not yet publicly available but the status "Trial Instituted" indicates this outcome.
• Final Written Decision (if issued): Not yet issued as the proceeding is still active.
• Settlement / termination: No settlement or termination information is publicly available for this active proceeding.
• Appeal: Not applicable yet as no Final Written Decision has been issued.
• Defensive value: This active IPR means that the validity of at least some claims of US10911186 is currently being challenged. A defendant facing assertion of this patent should closely monitor this proceeding, as a successful challenge could invalidate asserted claims, significantly weakening the patent owner's position.

Strategic summary

As of today, May 17, 2026, there is one active Inter Partes Review, IPR2025-01111, challenging US patent 10911186. The status is "Trial Instituted," indicating that the PTAB has found sufficient merit in the petitioner's challenge to proceed to a full trial. This means that the claims challenged in this IPR are currently untested in terms of a final PTAB decision, and their patentability is still being litigated before the Board.

Given that the proceeding is still in trial, no claims have been definitively canceled or sustained by a Final Written Decision. The estoppel landscape under § 315(e)(2) is not yet fully formed for this patent. However, once a Final Written Decision is issued, the petitioner, Samsung Electronics Co., Ltd. et al., and their privies, will be estopped from raising any ground that was raised or reasonably could have been raised during this IPR. The specific prior art grounds available to other potential defendants will depend on what prior art was asserted in IPR2025-01111. There is no indication of multiple IPRs filed by the same petitioner or aggressive PTAB appeals by the patent owner at this stage. Unified Patents is listed as a petitioner in a related district court litigation, but not directly in this specific IPR proceeding.

Recommended next steps

If you are a defendant, it is critical to monitor IPR2025-01111 closely. The PTAB has a statutory 1-year trial deadline from institution. You should identify the institution date of IPR2025-01111 to predict the approximate due date for the Final Written Decision. The institution decision itself, when publicly available, will detail the specific claims challenged and the prior art asserted, which is crucial for understanding the scope of the ongoing challenge.

You can find updates and documents related to IPR2025-01111 on the USPTO PTAB E2E system by searching for the proceeding number.