dentsply international inc is one of thirteen manufacturers of artificial teeth for use in dentures and other restorative appliances which it sells to dental products d

In 1993, Dentsply adopted Dealer Criterion 6, which provides that in order to effectively promote Dentsply–York products, authorized dealers “may not add further tooth lines to their product offering.” Dentsply operates on a purchase order basis with its distributors and enforces Dealer Criterion 6 by terminating dealers who purchase from manufacturers (other than those “grandfathered” in pursuant to the policy). The U.S. Government alleged that Dentsply had acted unlawfully to maintain a monopoly in violation of Section 2 of the Sherman Act. How would the Government define the relevant market? How would Dentsply define the relevant market? What other arguments might Dentsply assert in its defense? Which party should prevail? [UnitedStates v. Dentsply International, Inc., 399 F.3d 181 (3d Cir. 2005), cert. denied, 546 U.S. 1089 (2006).]