Patent 11812091

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

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PTAB activity (1)

AIA trial proceedings — IPR, PGR, CBM — filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced directly from the PTAB Trial API.

1 active
  • IPR2025-01311IPRfiled Sep 5, 2025vs. Samsung Electronics Co. Ltd. et al.Trial Instituted

Cached for 24 hours. Status strings are sourced verbatim from the PTAB API; the colored badge is our heuristic classification.

Cases on file (2)

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Specific litigation cases in our database that name US patent 11812091. The free-form analysis below may also discuss cases beyond this list.

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

✓ Generated

Known litigation involving US patent 11812091 as of April 26, 2026, includes the following:

  1. PTAB Inter Partes Review (IPR)

    • Jurisdiction: Patent Trial and Appeal Board (PTAB)
    • Case Number: IPR2025-01311
    • Filing Date: Not explicitly provided in the patent snippet, but the case number indicates it was filed in 2025.
    • Plaintiff(s): Unified Patents (as the petitioner)
    • Defendant(s): Maxell Ltd (as the patent owner, inferred from the patent's assignee)
    • Current Status: Pending - Instituted

  2. U.S. District Court Case

    • Jurisdiction: Texas Eastern District Court
    • Case Number: 5:25-cv-00052
    • Filing Date: Not explicitly provided in the patent snippet, but the case number indicates it was filed in 2025.
    • Plaintiff(s): Not explicitly provided in the patent snippet.
    • Defendant(s): Not explicitly provided in the patent snippet.
    • Current Status: Litigation (implies ongoing)

Additionally, the patent records indicate "First worldwide family litigation filed" related to the patent family ID=37804219, which includes US11812091B2. However, specific details regarding plaintiff(s), defendant(s), jurisdiction, case number, filing date, and outcome directly tied to US11812091 for this "worldwide family litigation" are not readily available in the provided snippet.

Generated 5/23/2026, 6:45:59 PM