Title

Rules Versus Standards in Antitrust Adjudication

Abstract

Antitrust law is moving away from rules (ex ante, limited factor liability determinants) and toward standards (ex post, multi-factor liability determinants). This movement has important consequences for the structure of antitrust adjudication, including shifting ultimate decision-making down the legal hierarchy (in the direction of juries, trial courts sitting as fact-finders, and administrative agencies) and increasing the importance of economic experts. The efficiency consequences of this trend are often negative. Specifying liability determinants as open-ended, unpredictable standards increases litigation costs, chills socially beneficial industrial practices, allocates decision-making on microeconomic policy to unqualified juries, and facilitates strategic misuse of antitrust litigation by rent-seeking competitors. Instead of following a generalized preference for standards, courts should consider five factors in choosing the ex ante precision of liability determinants: (1) whether the lawsuit was brought by the government or a private party; (2) whether the legal determinant would create liability or immunize against it; (3) whether the remedy sought is prospective (i.e., injunctive) or retrospective (i.e., damages); (4) whether the conduct is idiosyncratic or paradigmatic; and (5) whether the misconduct alleged is collusion or exclusion. A standard-based approach is most appropriate to create liability in public litigation seeking injunctive relief against idiosyncratic practices. A rule-based approach is most appropriate when used to immunize archetypal forms of industrial behavior from private actions for damages.

Disciplines

Antitrust and Trade Regulation

Date of this Version

February 2006