Opinion of the Court
voide, because . . . it is against Trade and Traffique, and bargaining and contracting betweene man and man.” 1 E. Coke, Institutes of the Laws of England §360, p. 223 (1628); see J. Gray, Restraints on the Alienation of Property §27, p. 18 (2d ed. 1895) (“A condition or conditionallimitation on alienation attached to a transfer of the entire interest in personalty is as void as if attached to a fee simple in land”).
This venerable principle is not, as the Federal Circuit dismissively viewed it, merely “one common-law jurisdiction’s general judicial policy at one time toward anti-alienation restrictions.” 816 F. 3d, at 750. Congress enacted and has repeatedly revised the Patent Act against the backdrop of the hostility toward restraints on alienation. That enmity is reflected in the exhaustion doctrine. The patent laws do not include the right to “restrain[ ] . . .further alienation” after an initial sale; such conditions have been “hateful to the law from Lord Coke’s day to ours” and are “obnoxious to the public interest.” Straus v. Victor Talking Machine Co., 243 U. S. 490, 501 (1917). “The inconvenience and annoyance to the public that an opposite conclusion would occasion are too obvious to require illustration.” Keeler, 157 U. S., at 667.
But an illustration never hurts. Take a shop that restores and sells used cars. The business works because the shop can rest assured that, so long as those bringing in the cars own them, the shop is free to repair and resell those vehicles. That smooth flow of commerce would sputter if companies that make the thousands of parts that go into a vehicle could keep their patent rights after the first sale. Those companies might, for instance, restrict resale rights and sue the shop owner for patent infringement. And even if they refrained from imposing such restrictions, the very threat of patent liability would force the shop to invest in efforts to protect itself from hidden lawsuits. Either way, extending the patent rights
