PTAB challenges

Proceedings overview

The USPTO Open Data Portal indicates one AIA trial proceeding has been filed against US patent 12207094: IPR2026-00118. This proceeding has a status of "Institution Denied," meaning the Patent Trial and Appeal Board (PTAB) declined to initiate an inter partes review trial. This outcome strengthens the patent owner's defensive posture as the challenged claims remain intact, effectively having survived a PTAB challenge at the institution stage.

IPR2026-00118 — [[[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. Network-1 Technologies, Inc.

• Type: Inter Partes Review
• Filed: 2025-11-26
• Status: Institution Denied. The PTAB decided not to institute a trial on this IPR petition.
• Judge panel: John A. Squires, Under Secretary of Commerce for Intellectual Property and Director of the United States Patent and Trademark Office.
• Petition grounds: The specific claims challenged and the prior art relied upon in the petition are not explicitly detailed in the publicly available summary data. However, IPR petitions typically challenge claims under 35 U.S.C. §§ 102 (novelty) and/or 103 (obviousness). The PTAB's general data indicates these are the most common issue types in trials.
• Institution decision: Denied on 2026-05-06. The institution was denied "after review of discretionary and non-merits considerations," suggesting the Board exercised its discretion not to institute a trial, rather than making a determination on the merits of patentability.
• Final Written Decision (if issued): Not applicable, as institution of the trial was denied.
• Settlement / termination: Not applicable, as institution of the trial was denied.
• Appeal: Not applicable, as institution of the trial was denied. Decisions on institution are generally non-appealable.
• Defensive value: The denial of institution for IPR2026-00118 means that the claims of US12207094 challenged in Samsung's petition remain valid and untested by the PTAB on those specific grounds. This strengthens the patent against future assertions, particularly if those assertions rely on the same or substantially similar prior art and arguments.

Strategic summary

As of today, US patent 12207094 has undergone one AIA trial proceeding, IPR2026-00118, which concluded with an "Institution Denied" status. Consequently, all claims challenged in that petition are effectively sustained against the specific invalidity grounds presented by Samsung and remain untainted by an adverse PTAB ruling. Since institution was denied on discretionary grounds, the PTAB did not make a determination on the merits of patentability, meaning the claims were not actually found patentable by the Board, but rather that the trial was not initiated.

Regarding the estoppel landscape, 35 U.S.C. § 315(e)(2) estoppel, which bars petitioners and their privies from raising grounds raised or reasonably could have been raised in a final written decision, does not apply here because no final written decision was issued. However, the petitioner, Samsung Electronics Co., Ltd. et al., is likely barred from filing another IPR petition on the same claims or grounds against this patent due to the "same or substantially the same prior art or arguments" rule under 35 U.S.C. § 315(e)(1). Future defendants not in privy with Samsung could potentially challenge the patent on the same or other prior art grounds.

The sole proceeding to date indicates the patent owner, Network-1 Technologies, Inc., successfully defended against the IPR at the earliest stage. The denial on discretionary grounds aligns with recent policy shifts by USPTO Director John A. Squires, who has introduced additional discretionary considerations for instituting IPRs. This suggests the patent owner may have presented arguments related to these discretionary factors, leading to the favorable outcome.

Recommended next steps

For a defendant facing assertion of US patent 12207094, it is important to understand that the patent's claims have not been invalidated by the PTAB. The denial of institution in IPR2026-00118 means the patent owner prevailed at the preliminary stage, making an IPR-based defense harder if relying on the same grounds.

Since the institution was denied, there are no ongoing trial-stage milestones for this particular IPR. The Decision on Institution for IPR2026-00118 was issued on 2026-05-06.

The absence of any granted IPRs or invalidated claims means that an alleged infringer would need to develop new invalidity arguments, or consider filing an IPR with different grounds and prior art if they are not in privy with Samsung. Any new IPR petition would also need to address the PTAB's discretionary denial standards, which have become a significant hurdle for petitioners.