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Likelihood of Confusion

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  • 13 Du Pont Factors: USPTO Trademark Likelihood of Confusion

    Entrepreneurs and business owners often approach federal trademark registration with equal parts excitement and anxiety. You’ve chosen a name you like, you’ve started using it, and you’re ready to lock it in with a federal registration—only[...]

    Categories: Likelihood of ConfusionPublished On: February 18, 2026
  • Ornamental Trademark Use and Class 25 Clothing Brands

    There is a current market trend for clothing trademarks to live in a gray zone between “design” and “brand.” That gray zone is where many business owners — especially restaurants, breweries, bars, entertainment companies, and beverage[...]

    Categories: Likelihood of Confusion, Trademark Office ActionPublished On: December 10, 2025
  • Why Small Changes Don’t Solve Trademark Conflicts

    When a name or design (or name + design) conflict pops up in a trademark clearance search or an Office Action, many entrepreneurs reach for the same quick fix: adjust the font, add a swoosh, throw[...]

    Categories: FAQ's, Likelihood of ConfusionPublished On: October 14, 2025
  • Navigating “Crowded Fields” in Trademark Refusals

    When the USPTO refuses an application under Section 2(d) for likelihood of confusion, applicants sometimes reach for a “crowded field” argument. The idea is straightforward: if many businesses already use similar words or roots for the[...]

    Categories: Likelihood of ConfusionPublished On: September 23, 2025
  • Understanding 13 du Pont Factors: Likelihood of Confusion

    Section 2(d) (Likelihood of Confusion) of the Lanham Act bars registration when an applied‑for trademark is likely to cause confusion, mistake, or deception as to the source or sponsorship of the goods or services. In other[...]

    Categories: Likelihood of Confusion, Trademark Disputes, Trademark Infringement, Trademark Office ActionPublished On: September 15, 2025
  • Sunkist vs KIST: How Courts Weigh Likelihood of Confusion Factors

    A familiar pair of parties—Sunkist Growers, Inc. and Intrastate Distributors, Inc. (IDI)—recently produced two opinions that every brand owner should understand. In September 2023, the TTAB dismissed Sunkist’s opposition to IDI’s KIST applications for soft drinks.[...]

    Categories: Likelihood of Confusion, Trademark DisputesPublished On: September 15, 2025
  • Acquired Distinctiveness, Priority, and Trademark Conflicts Explained

    At first glance, a business name like “Best Medical Certifications” might seem too descriptive to qualify as a federally registered trademark. And in many cases, the United States Patent and Trademark Office (USPTO) would agree. But[...]

    Categories: Likelihood of Confusion, Trademark Disputes, Trademark Office ActionPublished On: July 22, 2025
  • Goods & Services: The “Something More” Requirement

    In July 2024, the Trademark Trial and Appeal Board (TTAB) issued a precedential decision in In re Samsung Display Co., Ltd., affirming a Section 2(d) refusal to register the trademark UPC for various electronic display panels[...]

    Categories: Likelihood of Confusion, Trademark DisputesPublished On: April 9, 2025
  • Related Goods & Services Under Trademark Law

    In trademark law, establishing a likelihood of confusion often hinges not only on the similarity of the trademarks themselves, but also on whether the goods or services they identify are sufficiently related. Section 1207.01(a) of the[...]

    Categories: FAQ's, Likelihood of ConfusionPublished On: April 9, 2025
  • $100M Battle Over Mayhem: Lost vs Lady Gaga

    At the end of March 2025, a high-profile trademark dispute erupted in the U.S. District Court for the Central District of California, pitting famed surf and lifestyle brand Lost International, LLC ("Lost") against international music icon[...]

    Categories: Likelihood of Confusion, Trademark Disputes, Trademark InfringementPublished On: April 3, 2025
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