PTAB challenges

Proceedings overview

One inter partes review (IPR) proceeding has been filed against US Patent 11,886,750, which is currently pending. The bottom-line defensive posture for a defendant is that the patent is actively under challenge, and the outcome of this IPR could significantly impact its enforceability.

IPR2026-00358 — Advanced Micro Devices, Inc. v. Fermat International Inc.

• Type: Inter Partes Review
• Filed: 2026-05-12
• Status: Pending. This IPR is in the pre-institution phase, awaiting a decision from the PTAB on whether to institute a trial.
• Judge panel: Not yet publicly available as the proceeding is in the pre-institution phase.
• Petition grounds: The specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103 / § 112) are not publicly available in the provided search snippets without access to the petition document itself.
• Institution decision: Not yet issued. The statutory deadline for the PTAB to decide whether to institute the IPR is approximately 2026-11-12 (six months from the petition filing date).
• Final Written Decision (if issued): Not applicable as the proceeding is pending institution.
• Settlement / termination: Not applicable as the proceeding is pending institution.
• Appeal: Not applicable as the proceeding is pending institution.
• Defensive value: This active IPR proceeding indicates that the patent's validity is currently being challenged by a major technology company, Advanced Micro Devices, Inc. If the PTAB institutes the trial and subsequently cancels claims, any infringement theories relying on those claims would be significantly weakened or eliminated. Conversely, if institution is denied or the claims are sustained, it could strengthen the patent's perceived validity.

Strategic summary

Currently, US Patent 11,886,750 is subject to one active IPR proceeding, IPR2026-00358, filed by Advanced Micro Devices, Inc. As this proceeding is in its early stages, none of the patent's claims have been canceled or sustained through a Final Written Decision. Therefore, all claims of US11,886,750 remain untested and presumptively valid until the PTAB issues an institution decision, and potentially a Final Written Decision. The specific claims challenged in IPR2026-00358 are not publicly available in the provided search results.

Regarding the estoppel landscape, since no Final Written Decision has been issued, the estoppel provisions of § 315(e)(2) are not yet in effect for IPR2026-00358. If the PTAB institutes the IPR and issues a Final Written Decision, Advanced Micro Devices, Inc. (and its privies) would be estopped from challenging any claims found patentable, or any claims that could have been reasonably raised during the IPR. At this stage, all prior-art grounds remain theoretically available to other potential defendants not party to this specific IPR. The search results indicate that Advanced Micro Devices, Inc. has filed multiple IPRs against Fermat International Inc.'s patents on the same date (e.g., IPR2026-00359 on US11550512 and IPR2026-00360 on US12271636), suggesting a coordinated challenge to Fermat's portfolio.

Recommended next steps

The sole PTAB activity on US Patent 11,886,750 is IPR2026-00358, which is currently pending institution. The key upcoming milestone is the institution decision, expected around 2026-11-12. It is recommended to monitor the PTAB's E2E system for the institution decision in IPR2026-00358. This decision will clarify which, if any, claims the PTAB finds are likely unpatentable, thus proceeding to trial. The absence of other PTAB activity to date, beyond this recent filing, might suggest that the patent has not been extensively asserted or challenged previously.