The Court, in a 7-2 opinion written by Justice
Tom C. Clark, reversed and turned to the
Standard Stations case for guidance: [
Standard Stations] held that such contracts are proscribed by § 3 if their practical effect is to prevent lessees or purchasers from using or dealing in the goods, etc., of a competitor or competitors of the lessor or seller, and thereby "competition has been foreclosed in a substantial share of the line of commerce affected." In practical application, even though a contract is found to be an exclusive dealing arrangement, it does not violate the section unless the court believes it probable that performance of the contract will foreclose competition in a substantial share of the line of commerce affected. The Court then directly quoted
Standard Stations: [A] purely quantitative measure of this effect is inadequate, because the narrower the area of competition, the greater the comparative effect on the area's competitors. Since it is the preservation of competition which is at stake, the significant proportion of coverage is that within the area of
effective competition. The court said that meant that it was necessary to evaluate the contract in terms of its magnitude in the relevant market: [T]he competition foreclosed by the contract must be found to constitute a substantial share of the relevant market. That is to say, the opportunities for other traders to enter into or remain in that market must be significantly limited, as was pointed out in [
Standard Stations]. There, the impact of the requirements contracts was studied in the setting of the large number of gasoline stations—5,937, or 16% of the retail outlets in the relevant market—and the large number of contracts, over 8,000, together with the great volume of products involved. This combination dictated a finding that "Standard's use of the contracts [created] just such a potential clog on competition as it was the purpose of § 3 to remove" where, as there, the affected proportion of retail sales was substantial. The Court found that the two lower courts had focused on an artificially-narrow relevant market, Florida, rather than much of the Eastern United States,) which was not the area of
effective competition: In applying these considerations to the facts of the case before us, it appears clear that both the Court of Appeals and the District Court have not given the required effect to a controlling factor in the case—the relevant competitive market area. . . .[I]t clearly appears that the proportionate volume of the total relevant coal product as to which the challenged contract preempted competition, less than 1%, is, conservatively speaking, quite insubstantial. A more accurate figure, even assuming preemption to the extent of the maximum anticipated total requirements, 2,250,000 tons a year, would be .77%. . . . While $128,000,000 is a considerable sum of money, even in these days, the dollar volume, by itself, is not the test, as we have already pointed out. [T]he relevant coal market . . . sees an annual trade in excess of 250,000,000 tons of coal and over a billion dollars—multiplied by 20 years, it runs into astronomical figures. There is here neither a seller with a dominant position in the market, . . . nor myriad outlets with substantial sales volume, coupled with an industry-wide practice of relying upon exclusive contracts, as in [
Standard Stations]. On the contrary, we seem to have only that type of contract which "may well be of economic advantage to buyers, as well as to sellers." [Citing
Standard Stations] The Court rejected the view of Standard Stations that 6.7 percent of the market was enough to make a contract illegal and concluded: In weighing the various factors, we have decided that, in the competitive bituminous coal marketing area involved here, the contract sued upon does not tend to foreclose a substantial volume of competition. Justices Black and Douglas dissented without giving an opinion. ==Aftermath==