Patent 7836381

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 (0)

Specific litigation cases in our database that name US patent 7836381. The free-form analysis below may also discuss cases beyond this list.

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Litigation summary

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

✓ Generated

US Patent 7836381 has been involved in several litigation cases. As of April 26, 2026, the known litigation includes:

  1. TQ Delta, LLC v. ADTRAN, Inc.

    • Plaintiff(s): TQ Delta, LLC
    • Defendant(s): ADTRAN, Inc.
    • Jurisdiction: U.S. District Court, District of Delaware
    • Case Number: 1:14-cv-00954
    • Filing Date: July 2014
    • Outcome/Current Status: Dismissed Without Prejudice on August 26, 2024. All claims and counterclaims were dismissed without a ruling on the merits, with each side bearing its own fees. US7836381B1 was among the 32 patents at issue in this case.

  2. Adtran v. TQ Delta, LLC

    • Plaintiff(s): Adtran
    • Defendant(s): TQ Delta, LLC
    • Jurisdiction: U.S. District Court, District of Delaware
    • Case Number: 1:15-cv-00121
    • Filing Date: February 2015
    • Outcome/Current Status: Case Dismissed in August 2024, following the denial of both parties' cross-motions for summary judgment. No damages were awarded. US7836381B1 was among the 37 patents at issue.

  3. TQ Delta LLC v. Verizon Services Corp.

    • Plaintiff(s): TQ Delta LLC
    • Defendant(s): Verizon Services Corp.
    • Jurisdiction: District of Delaware
    • Case Number: 1:15-cv-00616
    • Filing Date: July 17, 2015
    • Outcome/Current Status: This case remains active with upcoming events, including a Final Pretrial Conference scheduled for December 8, 2027, and a Jury Trial scheduled for December 13, 2027. The specific involvement of US7836381 in this particular case, beyond it being part of TQ Delta's portfolio, is not explicitly detailed in the provided snippets.

  4. TQ Delta, LLC v. Verizon Services Corp.

    • Plaintiff(s): TQ Delta, LLC
    • Defendant(s): Verizon Services Corp.
    • Jurisdiction: District of Colorado
    • Case Number: 1:2022mc00017
    • Filing Date: Document dated December 21, 2022. The exact filing date of the original case is not clear, as "mc" generally refers to miscellaneous civil cases.
    • Outcome/Current Status: Status not fully clear from the provided snippet, which refers to a document filed on December 21, 2022. The specific involvement of US7836381 in this miscellaneous civil action is not explicitly stated.

  5. PTAB case IPR2023-00066

    • Jurisdiction: Patent Trial and Appeal Board (PTAB)
    • Case Number: IPR2023-00066
    • Filing Date: Not explicitly provided in the patent document.
    • Outcome/Current Status: Not Instituted - Procedural.

  6. PTAB case IPR2022-00665

    • Jurisdiction: Patent Trial and Appeal Board (PTAB)
    • Case Number: IPR2022-00665
    • Filing Date: Not explicitly provided in the patent document.
    • Outcome/Current Status: Settlement.

While the Google Patents "Family has litigation" section also lists other cases in the Delaware District Court (e.g., 1:13-cv-02013, 1:13-cv-01835) and Alabama Northern District Court (5:14-cv-01381), and a case in the Court of Appeals for the Federal Circuit (18-2158), the provided search results do not explicitly confirm that US7836381 was an asserted patent in those specific matters, nor do they provide complete details for those cases, such as plaintiff(s), defendant(s), or outcomes beyond general jurisdiction and case numbers.

Generated 5/29/2026, 8:49:20 PM