Quality King Distributors, Inc. v. L'anza Research International, Inc.
Quality King Distributors Inc., v. L'anza Research International Inc., 523 U.S. 135 (1998), was a decision by the United States Supreme Court over whether a copyright holder could restrict redistribution of material containing copyrighted content (authorized by the copyright holder) which is imported into the United States as so-called "grey market" goods.
The Supreme Court found that the copyright holder could not prevent re-importation of materials it had authorized.