Patent 6980537

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 (3)

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Specific litigation cases in our database that name US patent 6980537. 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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US Patent 6980537 has been involved in several litigation cases. The current assignee of the patent is Stingray IP Solutions LLC.

Here is a list of known litigation involving US Patent 6980537:

  • Plaintiff: Stingray IP Solutions, LLC

    • Defendant: TP-Link Technologies Co., Ltd., TP-Link Corporation Limited, and TP-Link International Ltd.
    • Jurisdiction: Initially, Eastern District of Texas. Transferred to Central District of California, then orders vacated and remanded to Eastern District of Texas by Federal Circuit.
    • Case Number: 23-102 (Federal Circuit appeal number). Original district court case numbers are not explicitly provided in the search results but are part of the underlying infringement suits.
    • Filing Date: Stingray filed patent infringement suits in the Eastern District of Texas against TP-Link. The Federal Circuit mandamus petition was decided on January 9, 2023.
    • Current Status/Outcome: The Federal Circuit granted Stingray's petition for a writ of mandamus, vacating the district court's transfer orders to the Central District of California and remanding the cases for further proceedings consistent with their order. The Federal Circuit found that a patent infringement defendant's post-suit consent to personal jurisdiction in another state did not defeat the application of Rule 4(k)(2) for establishing jurisdiction.

  • Plaintiff: Stingray IP Solutions LLC

    • Defendant: Assa Abloy IP AB
    • Jurisdiction: Texas Eastern District Court
    • Case Number: 2:23-cv-00503
    • Filing Date: 2023-10-26
    • Current Status/Outcome: Closed

  • Plaintiff: Stingray IP Solutions LLC

    • Defendant: Vivion Inc.
    • Jurisdiction: Texas Eastern District Court
    • Case Number: 2:23-cv-00499
    • Filing Date: 2023-10-24
    • Current Status/Outcome: Not explicitly stated as closed or open in the provided snippet, but listed in a "Litigation Case List" from Unified Patents.

It's important to note that the patent itself has an "Expired - Lifetime" status, with an expiration date of 2023-06-16, according to Google Patents. However, litigation can continue even after a patent has expired, particularly concerning past infringement.

Generated 5/29/2026, 6:45:34 PM