Patent 8156360
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.
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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
As of May 25, 2026, the USPTO ODP API indicates no AIA trial proceedings on file for US Patent 8156360. Therefore, there is currently no PTAB activity to report, which means all claims of the patent remain untested at the PTAB.
Strategic summary
Currently, all claims of US8156360 are untested by any AIA trial proceedings. This means that if a defendant is facing an assertion of this patent, all claims remain presumptively valid from a PTAB perspective. The absence of PTAB activity could signal several things: the patent may not have been aggressively asserted, or previous assertions may have settled before IPRs were filed, or potential petitioners have evaluated the claims and decided against filing a challenge.
The estoppel landscape is completely open, as there have been no prior PTAB proceedings. Therefore, a defendant being asserted against would not be barred from raising any prior art grounds under § 315(e)(2). All statutory bases for challenging patentability (§ 102 / § 103 / § 112) remain available for a potential petitioner.
Recommended next steps
Given the absence of any PTAB activity on US Patent 8156360, a defendant currently facing assertion of this patent has a clear path to potentially challenge its validity through an AIA trial proceeding, if appropriate prior art can be identified. The absence of prior challenges also means that the patent owner has not had to defend these claims at the PTAB, so there is no established record of the patent's robustness in that forum.
Generated 5/25/2026, 6:47:23 PM