PTAB challenges

Proceedings overview

There is one active AIA trial proceeding on file for US Patent 12,160,681. This gives a defendant some defensive options, as the validity of the patent's claims is currently being challenged in an Inter Partes Review.

IPR2025-01310 — [[Samsung Electronics Co.](/litigations/by-defendant/Samsung%20Electronics%20Co.) Ltd.](/litigations/by-plaintiff/Samsung%20Electronics%20Co.%20Ltd.) et al. v. Maxell Ltd.

• Type: Inter Partes Review
• Filed: 2025-10-13
• Status: Trial Instituted
• Judge panel: Not publicly available yet.
• Petition grounds: Not publicly available yet.
• Institution decision: Instituted. Date and reasoning are not publicly available yet, but the status "Trial Instituted" indicates the PTAB found a reasonable likelihood that at least one claim is unpatentable.
• Final Written Decision (if issued): Not yet issued as the trial is ongoing.
• Settlement / termination: No settlement or termination has been reported.
• 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 of the patent's claims is currently under scrutiny. If facing assertion of this patent, a defendant could potentially benefit from a favorable outcome in this IPR, where claims might be canceled. It also indicates that at least one third party (Samsung Electronics Co. Ltd. et al.) believes there are strong grounds to challenge the patent.

Strategic summary

Currently, the status of US Patent 12,160,681 shows that all claims are untested by a final PTAB decision. However, IPR2025-01310 has been instituted, meaning the PTAB has found a reasonable likelihood that at least one claim is unpatentable and a trial is underway. The specific claims under challenge and the grounds for the petition are not yet publicly available.

Regarding the estoppel landscape, if IPR2025-01310 proceeds to a Final Written Decision, Samsung Electronics Co. Ltd. and its privies will be estopped under § 315(e)(2) from asserting in future civil actions or other USPTO proceedings any ground that was raised or reasonably could have been raised during the IPR. For other defendants, the prior art grounds raised by Samsung in this IPR (once public) would be unavailable if they are in privity with Samsung or raised identical or substantially identical arguments.

The filing of this IPR by Samsung Electronics Co. Ltd. et al. signals that the patent is considered a potential threat by a major industry player. The involvement of such a large entity suggests a significant challenge to the patent's validity.

Recommended next steps

As IPR2025-01310 is an active proceeding with trial instituted, it would be crucial to monitor its progress. Key milestones to watch for include:

• Institution Decision Details: Once publicly available, review the full institution decision to understand which claims are being challenged and on what grounds. This will provide insight into the PTAB's initial assessment of the patent's validity.
• Oral Hearing: If an oral hearing is scheduled, it can offer further insights into the arguments of both parties.
• Final Written Decision (FWD) Due Date: The PTAB has a statutory one-year deadline from institution to issue a Final Written Decision. This decision will determine the patentability of the challenged claims. Access to this decision (when issued) will be critical and can be found on the USPTO PTAB Decisions website.