Patent 11520378
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: Lepton Computing LLC
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 US Patent 11,520,378 in the USPTO ODP API. Therefore, this patent has not been subjected to IPR, PGR, or CBM challenges, and all claims currently remain untested by the PTAB. This gives a defendant a less hardened defensive posture, as the patent claims have not been challenged in an administrative proceeding.
Strategic summary
Currently, all claims of US11520378 are UNTESTED by the PTAB. There are no records of any AIA trial proceedings (IPR, PGR, or CBM) having been filed against this patent.
Since there are no PTAB proceedings, the estoppel landscape under § 315(e)(2) is not yet applicable. All prior-art grounds remain available for a defendant to raise, either in district court litigation or a future PTAB petition.
The absence of PTAB activity is a notable signal. While Lepton Computing LLC is actively asserting this patent in district court litigation against Samsung, the lack of corresponding PTAB challenges suggests that the defendant (or other interested parties) has not yet pursued this avenue for invalidating the patent. This could be due to various strategic considerations, or simply the relatively recent issue date of the patent (December 6, 2022) which means a PGR window may have closed if not filed within 9 months of issuance, but an IPR can still be filed.
Recommended next steps
Since no PTAB activity exists for US11520378, a defendant facing assertion of this patent should consider filing an IPR petition. The PTAB has a statutory 1-year trial deadline from institution, which can often lead to a faster resolution regarding patent validity compared to district court proceedings. While institution decisions are now made by the USPTO Director in consultation with PTAB judges, the underlying process for challenging claims based on prior art remains available.
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