Abstract: | Under the leadership of Chief Justice John G. Roberts, Jr.,the Supreme Court has demonstrated a willingness to cast asidethe Court's prior antitrust decisions. The qualified per serule applicable to tying surely will not survive much longer,but what else might be in store is more speculative. This essayidentifies four decisions relating to competitor collaborationin which the Court's prior application of the per se rule doesnot comport with its modern decisions. In two of the cases,the conduct likely would be found lawful today; while in theother two, the conduct most likely still would be condemnedbut only after an abbreviated application of the rule of reason.This essay also identifies three legal doctrines ready for retirement.They are the absolute requirement of market delineation as apredicate for merger analysis, the outmoded approach to marketdelineation of Brown Shoe, and the unhelpful formulation ofthe monopolization offense in Grinnell. |