The Supreme Court could decide as early as Monday whether it will hear the case, which involves American Needle Inc.'s challenge to the league's exclusive contract for selling headwear such as caps and hats with team logos on them. American Needle, of Buffalo Grove, Ill., is also urging high court review. Football team owners hope the high court will issue a broader decision that would insulate the NFL against costly, frivolous antitrust lawsuits.
At the heart of the matter is whether the NFL's teams constitute 32 distinct businesses or a single entity that can act collectively without running afoul of antitrust laws.
The case is important to other professional sports besides football. The National Basketball Association and the National Hockey League both filed friend-of-the-court briefs siding with the NFL.
Notably absent is Major League Baseball, which has an antitrust exemption dating back to a 1922 Supreme Court ruling.
In its legal filing, the NFL waxed existentially about its own reason for being.
"Member clubs of the NFL have no independent value, no purpose, indeed no meaningful reason for existence but for their participation in the league itself," the NFL argued. It cited a ruling in an antitrust challenge involving the NBA, in which an appeals court wrote, "A league with one team would be like one hand clapping."
The NFL argued that professional sports leagues should be deemed single entities for purposes of antitrust law, at least concerning core venture functions.
American Needle had been one of many companies that manufactured NFL headwear, but in 2001, the league granted an exclusive contract to Reebok. American Needle sued the league and Reebok in 2004, claiming the deal violated the Sherman Act's antitrust provisions.
A federal district court disagreed, saying that the teams acted as a single entity in licensing their intellectual property. Last year, the 7th U.S. Circuit Court of Appeals in Chicago affirmed that ruling.
"Asserting that a single football team could produce a football game is less of a legal argument," the court said, than "a Zen riddle: Who wins when a football team plays itself?"