Patent 8855723

Litigation summary

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

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No PTAB proceedings on file. This patent has not been challenged through Inter Partes Review, Post-Grant Review, or Covered Business Method review at the USPTO. The absence is itself a signal — well-asserted patents eventually attract IPRs.

Cases on file (1)

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Specific litigation cases in our database that name US patent 8855723. 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.

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As of April 26, 2026, several litigation cases involve US Patent 8855723. The patent is owned and asserted by STASIT LLC, which is identified as a Non-Practicing Entity (NPE).

Here's a summary of known litigation:

  • Ex Parte Reexamination Initiated by Unified Patents

    • Plaintiff(s): Unified Patents, LLC
    • Defendant(s): STASIT, LLC (patent owner)
    • Jurisdiction: Central Reexamination Unit (CRU) of the United States Patent and Trademark Office (USPTO)
    • Filing Date: Prior to December 1, 2023. Unified Patents filed for ex parte reexamination less than one month before December 1, 2023.
    • Outcome/Current Status: On December 1, 2023, the Central Reexamination Unit granted Unified Patents' request, finding a substantial new question of patentability on all challenged claims of US Patent 8,855,723.

  • District Court Litigations (Asserted by STASIT LLC)
    US Patent 8855723 has been the sole patent asserted against multiple companies including Apple, Meta Platforms, Google, LG, Samsung, and HTC in various district court litigations. While specific details for each case are not fully provided in the search results, the patent has been litigated in the Western District of Texas.

    Unified Patents provides a portal to view district court litigations by STASIT, LLC. To obtain specific case numbers, filing dates, and detailed outcomes for each of these district court cases, further investigation using resources like PACER (Public Access to Court Electronic Records) would be necessary. However, access to PACER typically involves fees.

Generated 5/29/2026, 9:00:01 PM