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20th Anniversary of the 1982 Merger Guidelines: The Contribution of the Merger Guidelines to the Evolution of Antitrust Doctrine

On June 10, 2002, the Antitrust Division hosted a celebration of the 20th anniversary of the adoption of the 1982 Merger Guidelines.

For more information, contact Jacqueline Lincoln, Executive Office ( or 202-305-8243).


June 10, 2002

Giant Steps: On the Occasion of the Twentieth Anniversary of the 1982 Merger Guidelines Charles James (Assistant Attorney General, Antitrust Division)


Opinions presented in the following papers do not necessarily reflect the views of the Antitrust Division, U.S. Department of Justice, or the Federal Trade Commission.

Antitrust Division Presentations

The Merger Guidelines and the Integration of Efficiencies into Antitrust Review of Horizontal Mergers William J. Kolasky (Deputy Assistant Attorney General, Antitrust Division) and Andrew R. Dick (Acting Chief, Competition Policy Section, Antitrust Division)

June 4, 2002

The 1982 Merger Guidelines and the Ascent of the Hypothetical Monopolist Paradigm Gregory J. Werden (Senior Economic Counsel, Antitrust Division)

Guest Presentations

Responding to Developments in Economics and the Courts: Entry in the Merger Guidelines Jonathan B. Baker (Associate Professor of Law, Washington College of Law, American University)

Twenty Years of Merger Guidelines Enforcement at the FTC: An Economic Perspective David Scheffman, Malcolm Coate, and Louis Silvia (Members of the Bureau of Economics, Federal Trade Commission)

The Contribution of the Merger Guidelines to the Analysis of Non-Horizontal Mergers Frederick R. Warren-Boulton (Principal, MiCRA)

The Merger Guidelines of the U.S. Department of Justice: In Perspective Oliver E. Williamson (Edgar F. Kaiser Professor of Business, Economics, and Law at the University of California, Berkeley)

Merger Enforcement Guidelines

1997 Merger Guidelines

1992 Merger Guidelines

1984 Merger Guidelines

1982 Merger Guidelines

1968 Merger Guidelines

Note: The 1968 and 1982 Merger Guidelines have been entirely superseded. The 1984 Merger Guidelines have also been superseded, except for Section 4, which is still in effect. The Horizontal Merger Guidelines issued April 2, 1992 and revised April 8, 1997 by the U.S. Department of Justice and the Federal Trade Commission are still in effect in their entirety. The superseded guidelines are provided here for historical reference only.

Updated July 5, 2024