PTAB challenges

Proceedings overview

One AIA trial proceeding has been filed against US Patent 11664889. This proceeding has reached a Final Written Decision, leaving the claims either invalidated or sustained. The outcome of this IPR will determine the current defensive posture for a defendant.

IPR2025-00221 — Tesla, Inc. v. Intellectual Ventures II LLC

• Type: Inter Partes Review
• Filed: 2024-11-25
• Status: Final Written Decision — a final decision has been issued by the Patent Trial and Appeal Board.
• Judge panel: Information not publicly available at this time.
• Petition grounds: Details regarding the specific claims challenged, prior art references, and statutory bases (§ 102 / § 103 / § 112) for the petition are not available from public search results at this time.
• Institution decision: The institution decision date and the panel's reasoning are not publicly available at this time.
• Final Written Decision (if issued): A Final Written Decision was issued on or before July 6, 2026, as indicated by the "last modified" date. However, the specific verdict at a claim-level granularity (i.e., which independent or dependent claims were canceled or held patentable) and the panel's reasoning are not yet publicly available through general web search or the USPTO PTAB Decisions portal as of 2026-07-07.
• Settlement / termination: Information regarding any settlement or termination of the proceeding is not publicly available at this time.
• Appeal: Information regarding any appeal of the Final Written Decision to the Federal Circuit is not publicly available at this time.
• Defensive value: Without the details of the Final Written Decision, the specific defensive value of this proceeding for a defendant is unknown. The outcome could range from complete invalidation of all challenged claims to the patent owner prevailing on all claims.

Strategic summary

As of 2026-07-07, only one IPR (IPR2025-00221) has been filed against US Patent 11664889. This IPR has concluded with a Final Written Decision. However, the specific claims of 11664889 that are now CANCELED, SUSTAINED, or UNTESTED cannot be determined from the currently available public information. The outcome of this IPR is critical as it will define the enforceable scope of the patent.

The estoppel landscape under § 315(e)(2) for Tesla, Inc. (and its privies) would apply to any grounds they raised or reasonably could have raised in IPR2025-00221. Without knowledge of the specific grounds presented in the petition and adjudicated in the FWD, it is impossible to determine precisely which prior-art grounds would be barred for Tesla, Inc. For other potential defendants, if they are not in privy with Tesla, Inc., the estoppel provisions would not directly apply to them, and they would potentially have access to a broader range of prior-art grounds for their own challenges.

There is no discernible pattern of multiple IPRs from the same petitioner or aggressive PTAB appeals by the patent owner based on the single proceeding information. Unified Patents is listed as a source for the PTAB data, indicating they may track this patent, but not necessarily that they are involved in the proceeding itself.

Recommended next steps

Given that IPR2025-00221 has reached a Final Written Decision, the most crucial next step for a defendant facing assertion of US11664889 is to obtain and review the complete Final Written Decision. This document will precisely detail which claims, if any, were invalidated.

As the Final Written Decision date is recent (last modified 2026-07-06), it is advisable to regularly check the USPTO PTAB E2E system for the official publication of the decision for IPR2025-00221. Once the FWD is public, if claims cited in a demand letter are found to be canceled, this would significantly weaken the patent owner's position.

• Continuously monitor the USPTO PTAB Decisions portal for the publication of the Final Written Decision for IPR2025-00221.
• If the FWD invalidates any claims, specifically review the claims cited in any assertion materials against the invalidated claims.