PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US Patent 8610397. This proceeding, IPR2026-00006, was terminated due to settlement, meaning no claims were formally invalidated or sustained by a Final Written Decision. As such, the patent claims remain untested by a PTAB final decision.

IPR2026-00006 — Nintendo Co., Ltd. et al. v. Malikie Innovations Ltd

• Type: Inter Partes Review
• Filed: 2025-10-08
• Status: Terminated-Settled. This indicates the parties reached an agreement and the proceeding was concluded without a Final Written Decision.
• Judge panel: Information regarding the specific judge panel for this IPR is not publicly available from the provided data or readily discoverable through general web searches for terminated/settled cases unless a formal institution decision or FWD was issued and made public.
• Petition grounds: Specific claims and prior art challenged in the petition are not publicly detailed for this terminated-settled IPR in the provided data or easily found via general web search without access to the full PTAB docket.
• Institution decision: Given the "Terminated-Settled" status and last modification date (2026-03-02), it is highly probable that the proceeding was settled before an institution decision was issued. The statutory deadline for an institution decision would typically be within six months of the filing date (April 8, 2026). The settlement occurred before this deadline.
• Final Written Decision (if issued): Not issued. The proceeding was terminated before reaching a Final Written Decision.
• Settlement / termination: The proceeding was terminated as "Terminated-Settled" on or before 2026-03-02. The specific terms of the settlement are generally confidential between the parties.
• Appeal: Not applicable, as no Final Written Decision was issued.
• Defensive value: This IPR's termination by settlement means that the patent's claims were not adjudicated by the PTAB. Therefore, a defendant facing assertion of this patent cannot rely on any invalidated claims from this proceeding. However, the settlement itself might indicate some strength in the petitioner's challenge or a strategic decision by the patent owner to avoid an FWD.

Strategic summary

All claims of US Patent 8610397 remain UNTESTED by a Final Written Decision from the PTAB. The single IPR filed, IPR2026-00006, was terminated as "Settled" before reaching a substantive ruling on patentability. This means that, from a defensive standpoint, there are no claims that have been formally canceled by the PTAB that a defendant can point to to immediately dismiss an infringement theory.

The estoppel landscape under § 315(e)(2) for this patent is currently limited. Since IPR2026-00006 was settled prior to institution (or at least prior to a final written decision), the petitioner (Nintendo Co., Ltd. et al.) and its privies would likely not be estopped from raising grounds that could have been raised in the IPR in future proceedings or litigation, provided a judgment on the merits was not reached. This is because estoppel typically applies to grounds "raised or reasonably could have been raised" in a trial that results in a final written decision. For other potential defendants, all prior-art grounds remain available to challenge the patent's validity, as no claims were confirmed patentable in a FWD.

The pattern signals indicate that at least one entity, Nintendo Co., Ltd. et al., initiated a challenge to this patent. However, the subsequent settlement suggests either a mutual agreement was reached, or the patent owner and petitioner resolved their dispute outside of the PTAB process. The fact that the proceeding settled before institution, or at least before a final decision, means the patent has not yet been "hardened" by surviving a PTAB trial.

Recommended next steps

For a defendant currently facing assertion of US Patent 8610397, the primary takeaway is that the claims are currently fully intact from a PTAB perspective.

• Review the claims carefully: Since no claims have been invalidated by the PTAB, a thorough independent analysis of all asserted claims of US8610397 against the prior art is critical.
• Investigate the IPR2026-00006 settlement: While the terms are confidential, understanding the context of the settlement (e.g., whether it was part of a broader litigation settlement) could provide strategic insights.
• Consider a new PTAB challenge: Given that the patent has not been subjected to a Final Written Decision, a new IPR could be a viable strategy if strong prior art exists. The lack of estoppel for other parties makes this an open avenue.
• Monitor for future PTAB activity: Keep an eye on the USPTO PTAB E2E portal for any new petitions against US8610397. The absence of further PTAB activity after the initial IPR settlement could be a signal, but a well-asserted patent will often attract multiple challenges.## Proceedings overview
  There is one AIA trial proceeding on file for US Patent 8610397. This proceeding, IPR2026-00006, was terminated due to settlement, meaning no claims were formally invalidated or sustained by a Final Written Decision. As such, the patent claims remain untested by a PTAB final decision, offering little specific defensive leverage from this particular proceeding for a defendant.

IPR2026-00006 — Nintendo Co., Ltd. et al. v. Malikie Innovations Ltd

• Type: Inter Partes Review
• Filed: 2025-10-08
• Status: Terminated-Settled. This indicates the parties reached an agreement and the proceeding was concluded without a Final Written Decision.
• Judge panel: Specific judge panel information for this IPR is not publicly available from the provided data or readily discoverable through general web searches for terminated/settled cases that did not reach an institution decision or Final Written Decision.
• Petition grounds: The specific claims challenged and the prior art relied upon in the petition are not publicly detailed for this terminated-settled IPR in the provided data or easily found via general web search without access to the full PTAB docket.
• Institution decision: Given the "Terminated-Settled" status with a last modified date of 2026-03-02, it is highly probable that the proceeding was settled before the six-month statutory deadline for an institution decision (which would have been approximately April 8, 2026) was reached. Therefore, no institution decision was issued.
• Final Written Decision (if issued): Not issued. The proceeding was terminated before reaching a Final Written Decision.
• Settlement / termination: The proceeding was terminated as "Terminated-Settled" on or before 2026-03-02. The specific terms of the settlement are generally confidential between the parties.
• Appeal: Not applicable, as no Final Written Decision was issued.
• Defensive value: This IPR's termination by settlement means that the patent's claims were not adjudicated by the PTAB. Therefore, a defendant cannot rely on any invalidated claims from this proceeding to counter an assertion. The settlement itself might indicate a strategic decision by the patent owner to avoid an FWD or a mutual agreement reached between the parties.

Strategic summary

All claims of US Patent 8610397 remain UNTESTED by a Final Written Decision from the PTAB. The single IPR filed, IPR2026-00006, was terminated as "Settled" before reaching a substantive ruling on patentability. This means that, from a defensive standpoint, there are no claims that have been formally canceled by the PTAB that a defendant can point to in order to immediately dismiss an infringement theory.

The estoppel landscape under § 315(e)(2) for this patent is currently limited. Since IPR2026-00006 was settled prior to an institution decision or a final written decision, the petitioner (Nintendo Co., Ltd. et al.) and its privies would generally not be estopped from raising grounds that could have been raised in the IPR in future proceedings or litigation, as estoppel typically applies only to grounds "raised or reasonably could have been raised" in a trial that results in a final written decision. For other potential defendants, all prior-art grounds remain available to challenge the patent's validity, as no claims were confirmed patentable in a FWD.

The pattern signals indicate that at least one entity, Nintendo Co., Ltd. et al., initiated a challenge to this patent. However, the subsequent settlement suggests either a mutual agreement was reached, or the patent owner and petitioner resolved their dispute outside of the PTAB process. The fact that the proceeding settled before institution, or at least before a final decision, means the patent has not yet been "hardened" by surviving a PTAB trial.

Recommended next steps

For a defendant currently facing assertion of US Patent 8610397, the primary takeaway is that the claims are currently fully intact from a PTAB perspective.

• Review the claims carefully: Since no claims have been invalidated by the PTAB, a thorough independent analysis of all asserted claims of US8610397 against relevant prior art is critical.
• Investigate the IPR2026-00006 settlement: While the terms are confidential, understanding the context of the settlement (e.g., whether it was part of a broader litigation settlement, or if it involved a license) could provide strategic insights into the patent owner's enforcement strategy and the perceived strength of the patent.
• Consider a new PTAB challenge: Given that the patent has not been subjected to a Final Written Decision, a new IPR could be a viable strategy if strong prior art exists. The lack of estoppel for other parties makes this an open avenue.
• Monitor for future PTAB activity: Keep an eye on the USPTO PTAB E2E portal for any new petitions filed against US8610397. The absence of further PTAB activity after the initial IPR settlement could be a signal regarding the patent's perceived strength or enforcement.