OCTOBER TERM, 1992
Syllabus
certiorari to the united states court of appeals for the ninth circuit
No. 91-10. Argued November 10, 1992—Decided January 25, 1993
Shortly after the manufacturer of sorbothane—a patented elastic polymer with shock-absorbing characteristics—informed respondents, distributors of medical, athletic, and equestrian products made with sorbothane, that it would no longer sell them the polymer, petitioner Spectrum Sports, Inc., became the national distributor of sorbothane athletic products. Respondents' business failed, and they filed suit in the District Court against petitioners and others, seeking damages for alleged violations of, inter alia, § 2 of the Sherman Act, which makes it an offense for any person to "monopolize, or attempt to monopolize, or combine or conspire . . . to monopolize any part of the trade or commerce among the several States." A jury found that the defendants violated § 2 by, in the words of the verdict sheet, "monopolizing, attempting to monopolize, and/or conspiring to monopolize." The Court of Appeals affirmed, noting that, although the jury had not specified which of the three possible § 2 violations had occurred, the verdict stood because the evidence established a case of attempted monopolization. Relying on its earlier rulings in Lessig v. Tidewater Oil Co., 327 F. 2d 459, and its progeny, the court held that the jury could have inferred two of the elements of that offense—a specific intent to achieve monopoly power and a dangerous probability of monopolization of a relevant market—from evidence showing the defendants' unfair or predatory conduct, without any proof of relevant market or the defendants' market power, and that the jury was properly instructed that it could make such inferences.
Held: Petitioners may not be liable for attempted monopolization under
§ 2 absent proof of a dangerous probability that they would monopolize a relevant market and specific intent to monopolize. The conduct of a single firm, governed by § 2, is unlawful "only when it threatens actual monopolization." Copperweld Corp. v. Independence Tube Corp., 467 U. S. 752, 767. Consistent with this approach, Courts of Appeals other than the court below have generally required a plaintiff in an attempted monopolization case to prove that (1) the defendant has engaged in predatory or anticompetitive conduct with (2) a specific intent to monopolize and (3) a dangerous probability of achieving monopoly power. Unfair or predatory conduct may be sufficient to prove the necessary intent to
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