In Impression Products, Inc. v. Lexmark International Inc., 581 U.S. ___, 137 S. Ct. 1523 (2017), the United States Supreme Court reaffirmed the patent exhaustion rule; i.e., patent rights are exhausted upon the first sale of the patented item such that the patentee has no rights to impose any post-sale conditions or limitations on the use of the product, at least under the patent laws. Id. at 1529. In doing so, the Court left open the question of whether such conditions or limitations could be imposed as a matter of contract law. Thus, the "restrictions in Lexmark's contracts with its customers may have been clear and enforceable under contract law, but they do not entitle Lexmark to retain patent rights in an item that it has elected to sell." Id. at 1531 (emphasis added). In summarizing its decision in Quanta Computer, Inc. v. LG Electronics, Inc., 533 U.S. 617 (2008) ruling that the sale of computer components exhausted the plaintiffs patent rights in those components, the Court noted that it reached that conclusion "without so much as mentioning the lawfulness of the contract." Lexmark, 137 S. Ct. at 1533. And it later summarized its holding by stating that "whatever rights Lexmark retained are a matter of the contracts with its purchasers, not the patent law." Id. (emphasis added).