See the Supreme Court decision in Impression Prods., Inc. v. Lexmark Int'l, Inc. It absolutely does apply to patents. It applies to copyright, patent, and tra

See the Supreme Court decision in Impression Prods., Inc. v. Lexmark Int'l, Inc. It absolutely does apply to patents. It applies to copyright, patent, and trademarks, the three major areas of IP rights. There are some subtleties with each one, but it most definitely applies.