PTAB challenges

Proceedings overview

There are no AIA trial proceedings (Inter Partes Review, Post-Grant Review, or Covered Business Method reviews) on file for U.S. Patent 7,246,351 as of the current analysis. This indicates that the patent has not been challenged through these specific administrative processes at the Patent Trial and Appeal Board (PTAB). For a defendant, this means the patent's claims have not been subject to PTAB review for validity based on prior art or other grounds typically raised in IPR/PGR/CBM proceedings.

PTAB proceedings on file

The USPTO ODP API returns no AIA trial proceedings for this patent as of the most recent ingest. Web search results from Unified Patents indicate that prior art has been found for U.S. Patent 7,246,351, potentially in preparation for future challenges, but do not report any filed or instituted PTAB proceedings for this specific patent. Unified Patents has been active in challenging other patents owned by Datacloud Technologies, LLC, such as U.S. Patent 6,560,613 and U.S. Patent 8,762,498, leading to invalidation of claims in those cases, but similar actions are not reported for US7246351.

Strategic summary

As of the current date, all claims of U.S. Patent 7,246,351 remain untested by the PTAB. There are no records of any claims being canceled, sustained, or modified through IPR, PGR, or CBM proceedings. This means that a defendant facing assertion of this patent is not estopped by 35 U.S.C. § 315(e)(2) from raising any prior-art grounds that could have been presented in an IPR. All prior-art grounds, including those identified in the "Prior art" section of this analysis, are still available for a defendant to assert in district court or potentially in a newly filed PTAB petition (though the patent has expired, limiting the types of challenges that can be brought).

The absence of PTAB activity is notable, especially given the patent's expiration on June 12, 2024, and the extensive district court litigation activity by the current assignee, Datacloud Technologies LLC. Often, patents asserted in such widespread litigation campaigns attract IPR filings from defendants seeking to invalidate claims. The fact that this patent has not been subjected to PTAB review could imply that, for various strategic reasons, petitioners either chose not to challenge it or their petitions were not instituted (though no records of denied institution were found).

Recommended next steps

Given the absence of PTAB activity, the recommended next steps for a defendant facing assertion of U.S. Patent 7,246,351 would depend on the timing of the alleged infringement and the nature of the asserted claims:

• Focus on District Court Defenses: Since the patent expired on June 12, 2024, any ongoing or future litigation would be solely for past damages. Defendants can pursue all available invalidity defenses in district court, including those based on the strong prior art identified in the "Prior art" section of this analysis (e.g., U.S. Patents 6,212,563 and 6,557,043).
• Explore Ex Parte Reexamination: While IPRs are generally unavailable for expired patents, an ex parte reexamination petition (35 U.S.C. § 302) might still be filed against an expired patent to challenge its validity based on printed publications and patents. This could be a cost-effective way to challenge validity, though it lacks the discovery and oral hearing components of an IPR.
• Monitor for Future PTAB Filings (unlikely): Although highly unlikely given the patent's expiration, it is always prudent to monitor for any newly filed IPRs or other PTAB challenges, especially if they are related to earlier district court cases or previous challenges that might have been sealed.