PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US Patent 11574991, which has been terminated due to settlement. As a result, no claims were invalidated or sustained by the PTAB. The patent's claims remain untested by a final written decision, indicating that a defendant facing assertion of this patent would not benefit from any adjudicated invalidation of claims through this specific IPR.

IPR2025-01479 — BOE Technology Group Co., Ltd. et al. v. Samsung Display Co Ltd (Assignee)

• Type: Inter Partes Review
• Filed: 2025-08-31
• Status: Terminated-Settled. The proceeding was ended by the PTAB due to the parties reaching a settlement agreement.
• Judge panel: Information not publicly available via Google Patents. Additional search on USPTO PTAB E2E would be required to identify the specific Administrative Patent Judges.
• Petition grounds: The specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103 / § 112) are not directly stated in the Google Patents overview. This information would typically be found in the petition and institution decision documents on the USPTO PTAB E2E system.
• Institution decision: The Google Patents entry indicates the case was filed and later settled. It does not explicitly state whether institution was granted or denied. However, the status "Terminated-Settled" usually implies that institution occurred, leading to a trial that was subsequently settled.
• Final Written Decision: Not issued. The proceeding was terminated due to settlement before a final written decision could be rendered.
• Settlement / termination: The proceeding was terminated on 2026-01-06 due to a settlement between BOE Technology Group Co., Ltd. et al. (petitioner) and Samsung Display Co Ltd (patent owner). The specific terms of the settlement are confidential.
• Appeal: No appeal to the Federal Circuit was filed, as the proceeding was terminated via settlement before a final written decision.
• Defensive value: This IPR does not offer direct defensive value in terms of claims being invalidated. However, the fact that a settlement was reached indicates that there was some level of dispute regarding the patent's validity or scope. The petitioner, BOE Technology Group Co., Ltd. et al., and their privies would be estopped from challenging claims of US11574991B2 on any grounds they raised or could have reasonably raised in this IPR.

Strategic summary

As of today, US Patent 11574991 has not had any claims adjudicated as canceled or sustained by the Patent Trial and Appeal Board (PTAB). The single IPR filed, IPR2025-01479, was terminated due to a settlement between the petitioner, BOE Technology Group Co., Ltd. et al., and the patent owner, Samsung Display Co Ltd. This means that all claims of US11574991 remain UNTESTED by a final written decision from the PTAB.

The estoppel landscape resulting from IPR2025-01479 means that BOE Technology Group Co., Ltd. et al. and any parties in privy with them would be barred from raising any invalidity grounds that were raised or could have been reasonably raised in the IPR petition against US11574991. For other potential defendants, all prior-art grounds remain available for challenging the patent's claims in a new IPR, litigation, or other proceedings. The absence of a Final Written Decision means there is no public record of the PTAB's assessment of the patentability of the claims based on the challenged prior art.

There are no clear pattern signals regarding this patent based on the single settled IPR. The settlement itself could indicate various scenarios, such as the patent owner securing a license, the petitioner withdrawing to avoid adverse estoppel, or other business considerations. There's no indication of aggressive PTAB appeals by the patent owner or involvement of defensive aggregators from this information.

Recommended next steps

For a defendant currently facing assertion of US Patent 11574991:

• Review the IPR2025-01479 petition: While the case settled, the petition itself (if accessible via USPTO PTAB E2E) would detail the specific prior art and arguments BOE Technology Group Co., Ltd. et al. raised. This could provide valuable insights into potential weaknesses of the patent.
• Consider a new IPR: Since no claims were invalidated and the estoppel is limited to the prior petitioner, a new defendant could consider filing their own IPR if strong prior art exists. The lack of a prior FWD means the claims have not been "hardened" against PTAB challenge.
• Monitor for future litigation: Keep an eye on the unifiedpatents.com link provided in the patent record for potential district court litigation or other PTAB activity that might shed more light on the patent's enforceability. As of 2026-05-23, the Google Patents page mentions a US case filed in Texas Eastern District Court (2:25-cv-00412) and the IPR2025-01479.
• Consult with patent counsel: A thorough validity analysis should be conducted to identify any relevant prior art that was not considered (or effectively argued) in the settled IPR.