Law Commons^™

The Rule Of Reason, Herbert J. Hovenkamp

Faculty Scholarship at Penn Carey Law

Antitrust’s rule of reason was born out of a thirty-year (1897-1927) division among Supreme Court Justices about the proper way to assess multi-firm restraints on competition. By the late 1920s the basic contours of the rule for restraints among competitors was roughly established. Antitrust policy toward vertical restraints remained much more unstable, however, largely because their effects were so poorly understood.

This article provides a litigation field guide for antitrust claims under the rule of reason – or more precisely, for situations when application of the rule of reason is likely. At the time pleadings are drafted and even up …