PTAB challenges

Proceedings overview

One AIA trial proceeding, IPR2025-01273, has been filed against US Patent 11666827. This proceeding reached a status of "Institution Denied," meaning the patent's claims were not challenged on the merits by the Patent Trial and Appeal Board. The patent therefore retains its full claims as granted, presenting a robust defensive posture against this specific challenge.

IPR2025-01273 — Niantic, Inc. v. ImagineAR, Inc.

• Type: Inter Partes Review
• Filed: 2025-07-14
• Status: Institution Denied. This means the PTAB decided not to initiate a full review of the patent claims based on the arguments presented in the petition.
• Judge panel: Administrative Patent Judges Jennifer B. Lim, Brian P. Murphy, and Patrick R. Scanlon.
• Petition grounds: Niantic, Inc. challenged claims 1-28 of U.S. Patent No. 11,666,827 under 35 U.S.C. § 103 as obvious over various combinations of prior art, including US 2011/0212771 A1 (Google), US 8,298,065 B2 (Microsoft), and US 7,844,289 B2 (Nokia).
• Institution decision: Denied on 2026-03-26. The panel determined that the petition did not demonstrate a reasonable likelihood that the petitioner would prevail with respect to any of the challenged claims. Specifically, the Board found that Niantic failed to adequately explain how the cited prior art would render the unique non-representation condition of claim 1 obvious, nor did it sufficiently address how the prior art taught the modification of virtual character statistics as claimed.
• Final Written Decision: Not issued, as institution was denied.
• Settlement / termination: Not applicable.
• Appeal: No appeal was filed, as institution was denied.
• Defensive value: The denial of institution for IPR2025-01273 means that all claims (1-28) of US Patent 11,666,827 remain intact and have not been canceled or amended by the PTAB. For a defendant facing assertion of this patent, this indicates that the specific obviousness arguments raised in this IPR petition were deemed insufficient by the PTAB to warrant a full review. Niantic would not be estopped from raising different invalidity arguments in district court, nor from filing a new IPR petition with new or substantially different grounds if statutory and regulatory requirements are met.

Strategic summary

All 28 claims of US Patent 11,666,827 are currently SUSTAINED in the context of PTAB proceedings, as the sole IPR petition filed against the patent (IPR2025-01273) was denied institution. No claims were canceled, amended, or deemed unpatentable by the PTAB in this proceeding. All claims remain legally valid from a PTAB perspective.

Regarding the estoppel landscape, since the PTAB denied institution for IPR2025-01273, Niantic, Inc., and its privies, are not subject to estoppel under 35 U.S.C. § 315(e)(2) for any grounds that could have been raised in that petition. Estoppel typically attaches only to grounds that were actually instituted and subsequently litigated to a final written decision, or to grounds that were presented in the petition and denied institution on the merits of unpatentability (which is generally not the case for threshold institution denials). Therefore, the specific prior-art grounds raised in Niantic's petition for IPR2025-01273 (i.e., various combinations of the '771 publication, the '065 patent, and the '289 patent for obviousness under § 103) are theoretically still available for Niantic (or other defendants) to pursue in district court litigation.

This IPR was filed by Niantic, Inc., the same entity involved as a defendant in the parallel Delaware District Court litigation (1:24-cv-01252-JDW) where the patent was already ruled invalid on eligibility grounds. The fact that only one IPR has been filed, and that it was denied institution, suggests that the patent has resisted initial challenges at the PTAB. There isn't a pattern of multiple IPRs from the same petitioner or extensive PTAB appeals by the patent owner at this stage.

Recommended next steps

Given that IPR2025-01273 was denied institution, a defendant (like Niantic, Inc.) would acknowledge that the specific obviousness arguments presented in that petition were unsuccessful at the PTAB. However, the District Court for the District of Delaware has already ruled US Patent 11,666,827 invalid under 35 U.S.C. § 101, finding it directed to abstract ideas without an inventive concept. This district court decision, dated April 7, 2026, is a much more significant development for a defendant. The patent owner, ImagineAR, Inc., has appealed this district court ruling to the U.S. Court of Appeals for the Federal Circuit (Case Number 26-1720).

Key next steps for a defendant:

• Monitor the Federal Circuit Appeal: The outcome of the appeal in ImagineAR, Inc. v. Niantic, Inc. (CAFC Case 26-1720) is paramount. If the Federal Circuit affirms the District Court's invalidity ruling under § 101, then all claims of US Patent 11,666,827 would be unenforceable, regardless of the PTAB's institution denial.
• Evaluate New IPR Grounds: While the previous IPR was denied, a defendant could explore filing a new IPR petition based on different prior art or different arguments, or potentially refine the previous arguments to address the PTAB's reasoning for denial. However, considering the ongoing Federal Circuit appeal regarding § 101 validity, investing significant resources in another PTAB challenge might be deferred until the appeal's outcome is known.
• Leverage District Court Invalidity: Until overturned, the District Court's finding of invalidity under § 101 provides a strong defense in any assertion of this patent.
• Review Institution Decision: Carefully review the specific reasoning in the PTAB's decision denying institution for IPR2025-01273 to understand precisely why the petition failed (available at https://e2e.uspto.gov/ by searching case IPR2025-01273). The panel's detailed explanation of the deficiencies in the obviousness arguments could inform future strategies.

As of the current date, there are no active PTAB proceedings on file for US Patent 11666827, but the Federal Circuit appeal is active and critical.

References:
IPR2025-01273, Paper 11, Decision Denying Institution, dated March 26, 2026.
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