IP lawsuits in U.S. District Court, Southern District of California

Federal patent, copyright, and trademark lawsuits filed in U.S. District Court, Southern District of California, tracked by IP Feed — newest first, each with an AI summary and the Coverage-vs-Reality meter.

  1. ActivePatentS.D. Cal.2026-10-06
    Smith Interface Technologies, LLC v. Apple Inc.

    Smith Interface Technologies sues Apple for infringing its patents in Apple products or services.

  2. ClosedPatentS.D. Cal.2026-10-05
    Taction Technology, Inc. v. Apple Inc.

    Taction Technology sues Apple for allegedly infringing its patents in Apple products or services.

  3. ActivePatentS.D. Cal.2026-10-05
    Rich Media Club, LLC v. MediaNews Group, Inc.

    Rich Media Club sues MediaNews Group for allegedly infringing its patent technology.

  4. ActivePatentS.D. Cal.2026-10-02
    Apple Inc. v. Boomcloud 360, Inc.

    Apple is suing Boomcloud 360 for patent infringement in federal court. The case centers on alleged violations of Apple's patented technology, though the specific patent and technology at issue are not detailed in the case caption. The lawsuit will determine whether Boomcloud 360 infringed Apple's intellectual property rights.

  5. ActiveTrademarkS.D. Cal.2026-09-18
    Weiss v. Joco Enterprises LLC

    Max Weiss is suing Joco Enterprises LLC and related defendants, including Jose Fernando Munoz Alvarez and John Jairo Sandoval, for trademark infringement in federal court. The case centers on alleged unauthorized use of Weiss's trademark, with defendants potentially operating through multiple entities including Private Loan Relief Services LLC and E-Ideas Limitada. The dispute involves protection of Weiss's brand rights in what appears to be a commercial context.

  6. ActivePatentS.D. Cal.2026-09-03
    Ameranth, Inc. v. Brink Software, Inc.

    Ameranth, Inc. sued Par Technology Corporation and Brink Software, Inc. for patent infringement in federal court. The case centers on a patent allegedly covering restaurant management or point-of-sale technology, with Ameranth claiming the defendants' software products infringe its protected intellectual property.

  7. ClosedCopyrightS.D. Cal.2026-07-07
    Powers v. Disney/The Walt Disney Corporation

    Christin Noel Powers sues Disney and multiple filmmakers for copyright infringement related to an animated film.

  8. ActivePatentS.D. Cal.2026-04-16
    Platform Science, Inc. v. Fleet Connect Solutions, LLC

    Platform Science sues Fleet Connect Solutions for infringing its patents.

  9. ClosedTrademarkS.D. Cal.2025-06-03
    Insurance King Agency, Inc. v. Digital Media Solutions, LLC

    Insurance King Agency sues Digital Media Solutions and Underground Elephant for trademark infringement under the Lanham Act.

  10. ClosedPatentS.D. Cal.2024-09-12
    Ameranth, Inc. v. Pizza Hut, Inc.

    IPDEV Co. is suing Marriott International, Hilton, Starwood Hotels, and 16 other hospitality and ticketing companies for patent infringement. The case involves U.S. patent claims under 35 U.S.C. § 271, though the specific patent number and technology aren't disclosed in available records. The defendants span hotel chains, event ticketing platforms, and reservation systems.

  11. ClosedTrademarkS.D. Cal.2024-07-30
    Debrosse Zimmermann v. LeadClient, Inc.

    DiCello Levitt LLC and Diandra Fu Debrosse Zimmermann sued LeadClient, Inc., Jonathan Gottfried, Inventive Solutions LLC, Justice Here LLC, AAL Media LLC, and Select Justice LLC for trademark infringement under the Lanham Act. The case involves alleged unauthorized use of a trademark; SquareWave Digital LLC is named as a third-party defendant. The specific mark at issue is not identified in available case records.

  12. ClosedCopyrightS.D. Cal.2023-06-26
    Grant Heilman Photography, Inc. v. Gray Television, Inc.

    Grant Heilman Photography is suing Gray Television and Multimedia Graphic Network over copyright infringement. The case centers on alleged unauthorized use of Heilman's photographs, likely in Gray Television broadcasts or productions. The dispute involves whether the defendants properly licensed or compensated Heilman for reproducing and displaying his copyrighted images.

  13. ClosedTrademarkS.D. Cal.2023-03-21
    Weldental LLC v. Leonesio

    Weldental LLC sues Max Leonesio and related entities for trademark infringement under the Lanham Act.

  14. DormantTrademarkS.D. Cal.2022-11-14
    Brooks Entertainment, Inc. v. Activision Blizzard, Inc.

    Brooks Entertainment is suing Rockstar Games and Activision Blizzard for trademark infringement under the Lanham Act. The lawsuit centers on alleged unauthorized use of Brooks Entertainment's trademark, though the specific mark at issue is not detailed in the available case information.

  15. ClosedPatentS.D. Cal.2020-10-26
    Bell Northern Research, LLC v. Coolpad Technologies, Inc.

    Bell Northern Research sues Coolpad, Kyocera, Broadcom, and Yulong for infringing its patents.

  16. ClosedCopyrightS.D. Cal.2018-04-04
    Philpot v. Multimedia Graphic Network, Inc.

    Larry Philpot is suing Multimedia Graphic Network, Inc. for copyright infringement in federal court. The case involves alleged unauthorized use of graphic or multimedia content. Without details on the specific work at issue, the dispute centers on whether Multimedia Graphic Network infringed Philpot's copyrighted material.

  17. ClosedPatentS.D. Cal.2014-09-15
    Multimedia Patent Trust v. Apple Inc.

    Canon, LG Electronics, and Multimedia Patent Trust sued Apple, TiVo, DISH Network, DIRECTV, EchoStar, News Corp, Time Warner, and others over patent infringement. The case involves a civil action under 35 U.S.C. § 145 concerning unspecified patent claims. The defendants represent major media, broadcasting, and consumer electronics companies.

  18. ClosedPatentS.D. Cal.2009-04-23
    Anticancer Inc v. Cambridge Research & Instrumentation, Inc.

    A consortium of major pharmaceutical and biotech companies—including Anticancer Inc, Xenogen, Caliper Life Sciences, Genentech, and Eastman Kodak—sued Cambridge Research & Instrumentation and numerous other defendants for patent infringement. The case involves a patent related to biomedical research instrumentation and methodologies. The plaintiffs are seeking relief for unauthorized use of their patented technology across the defendant group.

  19. ClosedPatentS.D. Cal.2006-06-05
    Hewlett-Packard v. Gateway Inc

    Hewlett-Packard and Intel sued Gateway and EMachines for patent infringement. The lawsuit centers on computer technology patents, though the specific patents aren't identified in the case record. The dispute involves allegations that the defendants' computer products violated the plaintiffs' patent rights.