Patent 12156508
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.
Current assignee: Zhende Tech, Defendants Identified IN Schedule A
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
The USPTO ODP API returns no AIA trial proceedings for US Patent 12,156,508. A web search for PTAB proceedings concerning this patent also yielded no results. Therefore, as of today's date, there is no PTAB activity on file for US Patent 12,156,508. This means all claims of the patent are currently untested by AIA trial proceedings.
Strategic summary
All claims of US Patent 12,156,508 are currently untested by AIA trial proceedings. There is no estoppel landscape to consider from past PTAB decisions, as no such decisions exist for this patent. The absence of PTAB activity can be interpreted in several ways: it might suggest that potential petitioners have not yet found strong enough prior art to challenge the claims, or that the patent has not been asserted aggressively enough to provoke an IPR. Given that the patent was issued on December 3, 2024, and its priority date is December 17, 2013, there has been some time for a challenge to be filed if a strong motivation existed.
Recommended next steps
Since no PTAB activity exists for US Patent 12,156,508, the immediate next steps would involve a thorough prior art search to assess the patentability of the claims, particularly in light of the "Obviousness" analysis provided previously. This patent, issued December 3, 2024, remains eligible for Post-Grant Review (PGR) for nine months from its issue date (until September 3, 2025), if applicable, or Inter Partes Review (IPR). A defendant facing assertion should investigate whether a strong IPR petition could be filed. The absence of prior PTAB challenges means that all prior art grounds are still available for a new petitioner (and their privies) to raise.
Generated 5/30/2026, 12:48:59 AM