Opinion of the Court
words (think “Google”), graphic designs (Nike’s swoosh), and so-called trade dress, the overall appearance of a product and its packaging (a Hershey’s Kiss, in its silver wrapper). See Wal-Mart Stores, Inc. v. Samara Brothers, Inc., 529 U. S. 205, 209–210 (2000). The second part of the definition describes every trademark’s “primary” function: “to identify the origin or ownership of the article to which it is affixed.” Hanover Star Milling Co. v. Metcalf, 240 U. S. 403, 412 (1916). Trademarks can of course do other things: catch a consumer’s eye, appeal to his fancies, and convey every manner of message. But whatever else it may do, a trademark is not a trademark unless it identifies a product’s source (this is a Nike) and distinguishes that source from others (not any other sneaker brand). See generally 1 J. McCarthy, Trademarks and Unfair Competition §3:1 (5th ed. 2023). In other words, a mark tells the public who is responsible for a product.
In serving that function, trademarks benefit consumers and producers alike. A source-identifying mark enables customers to select “the goods and services that they wish to purchase, as well as those they want to avoid.” Matal v. Tam, 582 U. S. 218, 224 (2017). The mark “quickly and easily assures a potential customer that this item—the item with this mark—is made by the same producer as other similarly marked items that he or she liked (or disliked) in the past.” Qualitex Co. v. Jacobson Products Co., 514 U. S. 159, 164 (1995). And because that is so, the producer of a quality product may derive significant value from its marks. They ensure that the producer itself—and not some “imitating competitor”—will reap the financial rewards associated with the product’s good reputation. Ibid.
To help protect marks, the Lanham Act sets up a voluntary registration system. Any mark owner may apply to the Patent and Trademark Office to get its mark placed on a federal register. Consistent with trademark law’s basic purpose, the lead criterion for registration is that the mark
