Patent US9151557
PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Active provider: Google · gemini-2.5-flash
Proceedings on file (0)
All PTAB activity →AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.
No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Proceedings overview
There are no AIA trial proceedings on file for US9151557. This means the patent has not been challenged in an Inter Partes Review (IPR), Post-Grant Review (PGR), or Covered Business Method (CBM) review at the Patent Trial and Appeal Board (PTAB). For a defendant, this indicates that the patent is untested in these forums and has not been subjected to the scrutiny of an AIA trial.
Strategic summary
All claims of US9151557 are currently UNTESTED by AIA trial proceedings. This means there have been no PTAB challenges to invalidate any claims, nor have any claims been sustained through a PTAB final written decision. Therefore, there is no estoppel landscape established under 35 U.S.C. § 315(e)(2) for this patent. The absence of PTAB activity suggests that the patent has not been a significant target for petitioners, or if asserted, defendants have chosen other avenues of defense.
Recommended next steps
As there is no PTAB activity for US9151557, a potential defendant has a clear path to initiate an AIA trial proceeding if they believe the patent claims are unpatentable. The absence of previous challenges means all prior art grounds are still available for review by the PTAB.
Generated 5/30/2026, 6:45:31 AM