PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US patent 11272535. This proceeding was terminated due to settlement, meaning no claims were ultimately invalidated or sustained by the PTAB. For a defendant, this means the patent's claims remain untested by the PTAB in this specific proceeding, and the patent owner successfully resolved the challenge via settlement.

IPR2025-01188 — [[[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. Hannibal IP LLC

• Type: Inter Partes Review
• Filed: 2025-07-11
• Status: Terminated-Settled. This indicates that the parties reached a settlement agreement and the proceeding was formally concluded before a Final Written Decision on the merits was issued.
• Judge panel: Information regarding the specific judge panel for this IPR is not publicly available from the provided patent text or readily discoverable through general web searches for a terminated-settled IPR before an institution decision or Final Written Decision.
• Petition grounds: The petition grounds, including which claims were challenged, what prior art was asserted, and the statutory basis (§ 102 / § 103), are typically detailed in the petition document. This information is not explicitly stated in the provided patent text and would require accessing the petition itself, which is not available via simple general web search for a settled case without an institution decision.
• Institution decision: Given the "Terminated-Settled" status with a last modified date of 2026-04-17, it is highly probable that the IPR was settled and terminated before an institution decision was rendered. Therefore, there was no institution decision (instituted / denied / partially instituted) in this case.
• Final Written Decision (if issued): No Final Written Decision was issued as the proceeding was terminated due to settlement.
• Settlement / termination: The proceeding was terminated as settled, with a last modified date of 2026-04-17. The specific terms of the settlement are confidential between the parties.
• Appeal: No Federal Circuit appeal occurred, as the case was settled and terminated before a Final Written Decision was issued by the PTAB.
• Defensive value: This proceeding indicates that the patent owner, Hannibal IP LLC, was willing to settle the IPR challenge brought by Samsung Electronics Co., Ltd. While the claims were not invalidated, they were also not affirmed by the PTAB. This outcome suggests that a defendant might still consider an IPR challenge if new prior art or different arguments are available, as the patent has not been "hardened" by surviving an FWD.

Strategic summary

Currently, all claims of US patent 11272535 remain UNTESTED by a PTAB Final Written Decision. The single IPR filed, IPR2025-01188, was terminated due to a settlement between the petitioner, Samsung Electronics Co., Ltd. et al., and the patent owner, Hannibal IP LLC. This means that no claims of the patent were invalidated or sustained by the PTAB.

The estoppel landscape under § 315(e)(2) for this patent is relatively clear. Since IPR2025-01188 was terminated via settlement prior to a Final Written Decision, the petitioner (Samsung and its privies) would generally not be estopped from raising grounds that were raised or could have been reasonably raised in the IPR. However, the specific terms of the settlement agreement are confidential and could include clauses that affect future challenges by Samsung or its affiliates. For a new defendant facing assertion of this patent, all prior-art grounds, including those that might have been presented in IPR2025-01188, are still potentially available for an IPR petition.

Regarding pattern signals, only one IPR has been filed against US11272535, and it resulted in a settlement. Unified Patents is listed as a petitioner in the Google Patents litigation data for IPR2025-01188, indicating their role as a defensive aggregator. The settlement with a defensive aggregator like Unified Patents could imply the patent owner is strategic in managing their patent portfolio and litigation risk.

Recommended next steps

Since the IPR proceeding IPR2025-01188 was terminated due to settlement, there is no PTAB Final Written Decision to link to for invalidated claims. The claims of US11272535 remain entirely untested by a PTAB merits decision.

If you are a defendant facing assertion of this patent, consider the following:

• Prior Art Search: Conduct a thorough prior art search to identify strong invalidity arguments that could form the basis of a new IPR petition. The previous IPR was settled, leaving the merits of the patent claims unadjudicated by the PTAB.
• Analyze Settlement: While the specific terms are confidential, the settlement with Unified Patents might offer clues about the patent owner's valuation of the patent or their willingness to litigate through an IPR to FWD.
• Monitor for new PTAB activity: Keep an eye on the patent's public record for any future IPRs or other PTAB challenges, which could provide further insights into the patent's validity.## Proceedings overview
  There is one AIA trial proceeding on file for US patent 11272535. This proceeding, IPR2025-01188, was instituted by the USPTO Director but subsequently terminated due to settlement. For a defendant, this indicates that the patent was deemed sufficiently vulnerable to warrant an inter partes review trial, but its claims ultimately remain untested by a full PTAB Final Written Decision on the merits.

IPR2025-01188 — Samsung Electronics Co., Ltd. et al. v. Hannibal IP LLC

• Type: Inter Partes Review
• Filed: 2025-07-11
• Status: Instituted (2025-12-23), then Terminated-Settled (last modified 2026-04-17). The proceeding was instituted for trial by the Director of the USPTO, but later settled between the parties before a Final Written Decision was issued.
• Judge panel: The institution decision for IPR2025-01188 was made personally by Director John A. Squires, who assumed full personal control over all IPR and PGR institution decisions effective October 20, 2025.
• Petition grounds: Details regarding the specific claims challenged, the asserted prior art, and the statutory basis (§ 102 / § 103) are not explicitly available from the provided public data without direct access to the IPR petition or institution decision documents via the USPTO's Patent Trial and Appeal Case Tracking System (P-TACTS).
• Institution decision: Instituted on 2025-12-23. Director John A. Squires granted institution, determining that the petitioner had shown a reasonable likelihood of prevailing with respect to at least one of the challenged claims, and no other non-discretionary considerations warranted denial.
• Final Written Decision (if issued): No Final Written Decision on the merits was issued because the parties settled the proceeding after institution and before the statutory deadline for the FWD.
• Settlement / termination: The proceeding was terminated as settled, with a last modified date of 2026-04-17. The specific terms of the settlement are confidential between Samsung Electronics Co., Ltd. et al. and Hannibal IP LLC.
• Appeal: No Federal Circuit appeal occurred, as the case was terminated by settlement before a Final Written Decision could be rendered.
• Defensive value: The institution of IPR2025-01188 suggests that the patent was found to have potential vulnerabilities to prior art challenges, as the petitioner successfully demonstrated a reasonable likelihood of prevailing. However, the subsequent settlement means that the claims were not ultimately invalidated by the PTAB. For a defendant, this indicates that while the patent owner was willing to settle, the claims have not been "hardened" by surviving a full PTAB trial. An IPR-based defense could still be viable if new or different prior art is available, or if a different strategic approach is taken.

Strategic summary

All claims of US patent 11272535 remain UNTESTED by a PTAB Final Written Decision. The single IPR filed, IPR2025-01188, was instituted by the USPTO Director on December 23, 2025, but subsequently terminated due to a settlement between the petitioner, Samsung Electronics Co., Ltd. et al., and the patent owner, Hannibal IP LLC. This means that while the patent was deemed sufficiently vulnerable for trial to be instituted, no claims were ultimately invalidated or affirmed by the PTAB.

The estoppel landscape under § 315(e)(2) for this patent is relatively unaffected for parties other than the petitioner and its privies. Since IPR2025-01188 was terminated via settlement and did not proceed to a Final Written Decision, the petitioner (Samsung and its privies) would generally not be estopped from raising grounds that were raised or could have been reasonably raised in the IPR. However, any confidential settlement agreement may contain specific clauses that restrict Samsung's future actions. For a new defendant facing assertion of this patent, all prior-art grounds, including those that might have been presented in IPR2025-01188, are still potentially available for a new IPR petition.

Regarding pattern signals, only one IPR has been filed against US11272535, and it resulted in a settlement after institution. The petitioner for IPR2025-01188 included Samsung Electronics Co., Ltd., and Google Patents also notes Unified Patents as a petitioner in its litigation data. The fact that an IPR was instituted by the Director and then settled with a prominent technology company and a defensive aggregator like Unified Patents could signal that the patent owner is strategic in managing its portfolio and is willing to resolve challenges to avoid a full merits decision from the PTAB.

Recommended next steps

Since IPR2025-01188 was instituted but then terminated due to settlement, there is no PTAB Final Written Decision on the merits of the challenged claims to link to.

If you are a defendant facing assertion of this patent:

• Investigate IPR2025-01188 further: While the case settled, the fact that institution was granted by the Director suggests that strong invalidity arguments were presented in the petition. Gaining access to the petition and institution decision (if not publicly available on the USPTO website) could provide valuable insights into the patent's vulnerabilities and the prior art that the Director found compelling. You would typically do this through the USPTO's P-TACTS system (Patent Trial and Appeal Case Tracking System) or through discovery in parallel litigation.
• Prior Art Search and Analysis: Conduct a thorough prior art search to identify robust invalidity arguments. The institution of the prior IPR indicates that challenges to this patent's validity can be successful at the institution stage.
• Consider a new IPR: Given that the claims were not adjudicated on the merits, a new IPR could be a viable defense strategy. Focus on developing strong invalidity arguments, potentially leveraging insights from IPR2025-01188 if obtainable.
• Monitor for future developments: Keep track of any further PTAB proceedings or litigation involving US patent 11272535. The ongoing activity around the patent may reveal additional information relevant to your defense strategy.