In the U.S., like trademarks, a product’s trade dress is legally protected by the Lanham Act. Trade dress protection is intended to protect consumers from packaging or appearance of products that are designed to imitate other products; to prevent a consumer from buying one product under the belief that it is another. For example, the shape, color, and arrangement of the materials of a children’s line of clothing can be protectable trade dress (though, the design of the dress itself is not protected), (see Wal-Mart Stores, Inc. v. Samara Bros., Inc., 529 U.S. 205 (2000)) as can the design of a magazine cover, (see Reader’s Digest Ass’n v. Conservative Digest, 821 F.2d 800 (D.C. Cir. 1987)) the appearance and décor of a chain of Mexican-style restaurants, (see Two Pesos, Inc. v. Taco Cabana, 505 U.S. 763 (1992)) and a method of displaying wine bottles in a wine shop (see Best Cellars Inc. v. Grape Finds at Dupont, Inc., 90 F. Supp. 2d 431 (S.D.N.Y. 2000)). Source: http://en.wikipedia.org/wiki/Trade_dress