Another problem is a flourishing gray market. Givenchy and Christian Dior's Dune fragrance are just two of the luxury perfume brands that are sometimes diverted from authorized channels for sale at mass market retail outlets. However, tyMH and other luxury goods marketers found a new way to combat gray market imports into the United States. In March 1995, the U.S. Supreme Court let stand an appeals court ruling prohibiting a discount drugstore chain from selling Givenchy perfume without permission. Parfums Givenchy USA had daimed that its distinctive packaging should be protected under U.S. copyright law. The ruling has meant that Costco, Walmart, and other discounters cannot sell some imported fragrances without authorization.