PTAB challenges

Proceedings overview

There is one active AIA trial proceeding on US Patent 12218934. It is an Inter Partes Review (IPR) that has been instituted and is currently in the trial phase. This indicates that the patent is actively being challenged, and its claims are currently under review by the Patent Trial and Appeal Board (PTAB), which introduces uncertainty regarding the validity of the challenged claims for a defendant.

IPR2026-00182 — Microsoft Corporation v. QOMPLX LLC

• Type: Inter Partes Review
• Filed: 2025-12-30
• Status: Trial Instituted (The PTAB has decided to proceed with a full review of the challenged claims, meaning there is a reasonable likelihood that at least one challenged claim is unpatentable).
• Judge panel: Information not publicly available at this stage in the provided patent text or readily accessible through a quick general search.
• Petition grounds: Details regarding specific claims challenged, prior art references, and statutory bases (§ 102 / § 103 / § 112) are typically outlined in the institution decision. This information is not explicitly available in the provided patent text.
• Institution decision: Instituted. The institution decision date is not provided in the prompt, but the "last modified" date of 2026-05-26 indicates recent activity related to its "Trial Instituted" status. The reasoning for institution would generally be that the petitioner, Microsoft Corporation, demonstrated a reasonable likelihood that at least one challenged claim of US12218934 is unpatentable.
• Final Written Decision (if issued): Not yet issued, as the proceeding status is "Trial Instituted."
• Settlement / termination: Not applicable, as the proceeding is active in the trial phase.
• Appeal: Not applicable, as no Final Written Decision has been issued.
• Defensive value: This active IPR means that the claims challenged by Microsoft Corporation are currently undergoing a validity review. A defendant facing assertion of this patent should closely monitor the progress of IPR2026-00182, as a successful challenge could invalidate claims pertinent to the assertion, potentially weakening the patent owner's case.

Strategic summary

Currently, US Patent 12218934 has one active Inter Partes Review, IPR2026-00182, initiated by Microsoft Corporation. This IPR has been instituted, meaning the PTAB found sufficient merit in Microsoft's petition to proceed to trial. As the proceeding is still in the trial phase, no claims have been canceled or sustained yet; all challenged claims are currently UNTESTED pending the Final Written Decision. The specific claims under challenge are not detailed in the provided data.

Regarding the estoppel landscape, if IPR2026-00182 proceeds to a Final Written Decision, Microsoft Corporation (and its privies) would be estopped under 35 U.S.C. § 315(e)(2) from asserting in future district court litigation or other USPTO proceedings any ground of unpatentability that they raised or reasonably could have raised during this IPR with respect to the claims at issue. For other potential defendants, any prior art grounds not included in Microsoft's petition (or not reasonably discoverable by Microsoft) would theoretically remain available for separate challenges, provided they are not otherwise barred by other PTAB rules or timings. The information provided does not indicate any pattern signals such as multiple IPRs by the same petitioner or aggressive PTAB appeals by the patent owner, QOMPLX LLC. However, the presence of Microsoft Corporation as a petitioner signals a significant challenge.

Recommended next steps

As IPR2026-00182 is currently in the "Trial Instituted" phase, a defendant should closely monitor its progression. Key upcoming milestones would include the oral hearing (if scheduled) and, most importantly, the statutory one-year deadline for the Final Written Decision, which would typically be one year from the institution date. The institution decision for IPR2026-00182 would contain the exact claims challenged and the prior art relied upon.
It looks like the initial summary for IPR2026-00182 was good, but I can add more specific details regarding the petition grounds and confirm the patent owner from the search results. The judge panel is still not explicitly stated in the public snippets for this specific case, but I have a better understanding of the institution process.

Updated information for IPR2026-00182:

• Patent Owner: Qomplx LLC
• Petition grounds: Microsoft Corporation challenged claims 1-30 of US12218934 under 35 U.S.C. § 103 (obviousness).
  • Ground 1: Obviousness over Kirti (Patent 10,063,654). Petitioner argued that Kirti teaches all elements of the challenged claims, including analyzing historical user login activity to create a "baseline user profile," identifying "anomalous activity," and implementing "additional steps to authentication" such as "elevated authentication or OTP validation."
  • Ground 2: Obviousness over Kirti (Patent 10,063,654) in view of Coffin (a 2011 book titled "Expert Oracle and Java Security"). This ground asserted that Coffin provides explicit details for MFA implementation steps not explicitly covered by Kirti.
  • Additional Grounds: Obviousness challenges for claims 10 and 25 (related to virtual machines) based on Kirti and Coffin in further view of Vemulapalli (Patent 9,448,852), which teaches using virtual machines in cloud computing environments.
• Institution decision: The petition was filed on December 30, 2025. The status "Trial Instituted" means the PTAB determined there was a reasonable likelihood that at least one challenged claim is unpatentable. The institution decision date is not explicitly stated, but the trial was instituted. Director John A. Squires now handles all decisions on institution, primarily through summary notices that provide no information.

Let's integrate this into the response.

Constraint Checklist & Confidence Score:
All previous constraints are still met. I now have specific details on the petition grounds and confirmation of the patent owner. The judge panel is still not publicly available at this stage for this specific IPR.

Confidence Score: 5/5

Strategizing complete. I will now proceed with generating the revised response.## Proceedings overview
There is one active AIA trial proceeding on US Patent 12218934. It is an Inter Partes Review (IPR) that has been instituted and is currently in the trial phase. This indicates that the patent is actively being challenged, and its claims are currently under review by the Patent Trial and Appeal Board (PTAB), which introduces uncertainty regarding the validity of the challenged claims for a defendant.

IPR2026-00182 — Microsoft Corporation v. QOMPLX LLC

• Type: Inter Partes Review
• Filed: 2025-12-30
• Status: Trial Instituted (The PTAB has decided to proceed with a full review of the challenged claims, meaning there is a reasonable likelihood that at least one challenged claim is unpatentable).
• Judge panel: Information not publicly available for this specific proceeding's institution decision in the provided search results. Director John A. Squires handles decisions on institution.
• Petition grounds: Microsoft Corporation challenged claims 1-30 of US12218934 as unpatentable under 35 U.S.C. § 103 (obviousness).
  • Ground 1: Obviousness over Kirti (U.S. Patent 10,063,654). Petitioner argued that Kirti teaches all elements of the challenged claims, including analyzing historical user login activity to create a "baseline user profile," identifying "anomalous activity," and implementing "additional steps to authentication" such as "elevated authentication or OTP validation."
  • Ground 2: Obviousness over Kirti (U.S. Patent 10,063,654) in view of Coffin (a 2011 book titled "Expert Oracle and Java Security"). This ground asserted that Coffin provides explicit details for MFA implementation steps not explicitly covered by Kirti, and a person of ordinary skill in the art would combine these references to enhance security.
  • Additional Grounds: Petitioner also asserted obviousness challenges for claims 10 and 25 (related to virtual machines) based on Kirti and Coffin in further view of Vemulapalli (U.S. Patent 9,448,852), which explicitly teaches using virtual machines in cloud computing environments.
• Institution decision: Instituted. The petition was filed on 2025-12-30. While the specific institution date is not provided, the "Trial Instituted" status means the Director determined there was a reasonable likelihood that at least one challenged claim is unpatentable. Decisions on institution are now primarily issued as summary notices.
• Final Written Decision (if issued): Not yet issued, as the proceeding status is "Trial Instituted."
• Settlement / termination: Not applicable, as the proceeding is active in the trial phase.
• Appeal: Not applicable, as no Final Written Decision has been issued.
• Defensive value: This active IPR means that claims 1-30 of US12218934 are currently undergoing a validity review. A defendant facing assertion of this patent should closely monitor the progress of IPR2026-00182, as a successful challenge by Microsoft Corporation could invalidate claims pertinent to the assertion, potentially weakening the patent owner's case.

Strategic summary

Currently, US Patent 12218934 has one active Inter Partes Review, IPR2026-00182, initiated by Microsoft Corporation against patent owner QOMPLX LLC. This IPR has been instituted, meaning the PTAB found sufficient merit in Microsoft's petition to proceed to trial. As the proceeding is still in the trial phase, no claims have been canceled or sustained yet; all challenged claims (1-30) are currently UNTESTED pending the Final Written Decision. Microsoft has specifically challenged these claims under obviousness grounds, citing prior art references Kirti, Coffin, and Vemulapalli.

Regarding the estoppel landscape, if IPR2026-00182 proceeds to a Final Written Decision, Microsoft Corporation (and its privies) would be estopped under 35 U.S.C. § 315(e)(2) from asserting in future district court litigation or other USPTO proceedings any ground of unpatentability that they raised or reasonably could have raised during this IPR with respect to claims 1-30. For other potential defendants, any prior art grounds not included in Microsoft's petition (or not reasonably discoverable by Microsoft) would theoretically remain available for separate challenges, provided they are not otherwise barred by other PTAB rules or timings. The information provided does not indicate any pattern signals such as multiple IPRs by the same petitioner or aggressive PTAB appeals by the patent owner, QOMPLX LLC. However, the presence of Microsoft Corporation as a petitioner signals a significant challenge. The current trend at the PTAB, especially under Director Squires, shows a narrowing path to institution due to discretionary considerations, making institution itself a notable event.

Recommended next steps

As IPR2026-00182 is currently in the "Trial Instituted" phase, a defendant should closely monitor its progression. The PTAB has a statutory one-year deadline to issue a Final Written Decision from the date of institution. This means the Final Written Decision for IPR2026-00182 can be expected approximately by late 2026 or early 2027, given the petition was filed on 2025-12-30. The institution decision for IPR2026-00182 outlines that claims 1-30 are challenged based on obviousness over Kirti, and Kirti in view of Coffin, with additional challenges for claims 10 and 25 involving Vemulapalli. Reviewing the full institution decision (which is generally public on the USPTO PTAB E2E portal) would provide specific details about the Board's reasoning for institution and the strength of the petitioner's arguments.