Patent 11888392
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: Wolfspeed Inc.
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 is no PTAB activity on file for US Patent 11888392. This means there are no Inter Partes Reviews (IPR), Post-Grant Reviews (PGR), or Covered Business Method (CBM) patent challenges recorded for this patent. Therefore, for a defendant, all claims of the patent remain untested in an AIA trial proceeding, and the patent has not been hardened or narrowed by such challenges.
Strategic summary
As of the current date, US Patent 11888392 has not been subject to any AIA trial proceedings (IPR, PGR, or CBM) before the Patent Trial and Appeal Board. This means that all claims of the patent, specifically independent claims 1 and 15, are currently UNSCATHED by PTAB challenges. There is no public record of any claims being canceled or sustained through these administrative trials.
The absence of PTAB activity implies that the estoppel provisions of § 315(e)(2) are not yet in play for this patent. Any potential petitioner (and their privies) would still be free to raise any prior-art ground that they could reasonably assert against the patent, as there have been no prior institution decisions or final written decisions to create estoppel.
This lack of PTAB activity can be a signal in itself. For a patent that has been issued for over two years, the absence of IPRs might suggest that it has not yet been aggressively asserted in district court litigation, or that potential challengers have not identified sufficiently strong prior art to warrant a petition.
Recommended next steps
Since no PTAB activity exists for US Patent 11888392, a defendant facing assertion of this patent today would have the full range of PTAB challenge options available.
- Conduct a thorough prior art search: Without any PTAB proceedings, the patent's claims have not been examined under the IPR/PGR standards, which often involve a deeper dive into prior art than initial patent examination. A comprehensive search could uncover grounds for a new IPR or PGR petition.
- Consider filing an IPR or PGR petition: If strong prior art is found, filing an IPR (for patents issued from applications filed on or after March 16, 2013) or PGR (for patents issued from applications filed on or after March 16, 2013, and challenged within nine months of issuance) could be a viable defense strategy. The decision to institute an IPR is unappealable, but the PTAB has retained jurisdiction to issue a final written decision even after a statutory deadline has passed.
- Monitor for future PTAB filings: Continuously check the USPTO's Patent Trial and Appeal Case Tracking System (P-TACTS) for any newly filed petitions against US Patent 11888392, as this would provide critical information for developing a defense strategy.
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