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Quantification Of Harm In Private Antitrust Actions In The United States, Herbert J. Hovenkamp

All Faculty Scholarship

This paper discusses the theory and experience of United States courts concerning the quantification of harm in antitrust cases. This treatment pertains to both the social cost of antitrust violations, and to the private damage mechanisms that United States antitrust law has developed. It is submitted for the Roundtable on the Quantification of Harm to Competition by National Courts and Competition Agencies, Organization for Economic Cooperation and Development (OECD), Feb., 2011.

In a typical year more than 90% of antitrust complaints filed in the United States are by private plaintiffs rather than the federal government. Further, when the individual states …