PTAB challenges

Proceedings overview

As of May 30, 2026, there are no AIA trial proceedings on file for U.S. Patent No. 10,651,866 in the USPTO Open Data Portal. This indicates that, according to the canonical list, the patent has not yet been challenged through Inter Partes Review (IPR), Post-Grant Review (PGR), or Covered Business Method (CBM) proceedings before the Patent Trial and Appeal Board (PTAB). This means all claims of US 10651866 are currently unchallenged at the PTAB.

Strategic summary

Currently, all claims of U.S. Patent No. 10,651,866 remain UNTESTED by any AIA trial proceeding. There are no canceled or sustained claims as a result of PTAB review. This situation presents a defendant facing assertion of this patent with an open landscape for challenging patentability before the PTAB.

Since no PTAB proceedings have been filed, there is no estoppel landscape established under 35 U.S.C. § 315(e)(2). Therefore, a defendant is not barred from raising any prior art grounds they might discover against the patent's claims. All prior-art grounds, including those discussed in the "Prior art" section (e.g., Gieske et al., Feng et al., Chabanne et al., Choi et al.), are still available for a potential petitioner to raise.

There are no patterns of repeated filings by the same petitioner, aggressive appeals by the patent owner, or involvement of defensive aggregators like Unified Patents, as no PTAB activity has occurred.

Recommended next steps

Since no PTAB activity exists for U.S. Patent No. 10,651,866, a defendant facing assertion of this patent should consider the following:

• Conduct a thorough prior art search: While a prior art analysis was conducted during the patent's prosecution and for this report, a dedicated and comprehensive search tailored to specific accused products and infringement theories would be crucial.
• Evaluate potential IPR petitions: Given the "Obviousness" analysis suggesting vulnerabilities based on combinations of existing prior art, a defendant should seriously consider filing an IPR petition. The absence of prior PTAB challenges means a new petition would be a first attempt to invalidate the claims.
• Monitor for new filings: Continuously monitor USPTO databases (such as Patent Center or the PTAB's Open Data Portal) for any newly filed IPR, PGR, or CBM petitions against U.S. Patent No. 10,651,866 by other parties. Such filings could impact strategy and provide insights into potential grounds of unpatentability.