Efficiencies have yet not played a prominent role in American merger enforcement policy, although the federal antitrust agencies and the courts have recognized efficiencies as a factor in merger analysis that may tilt the balance in an otherwise anticompetitive transaction. A review of the...

In this empirical study all mergers that have been challenged by the U.S. antitrust agencies FTC and DOJ between 1995 and 2008 were analyzed in regard to the question to what extent and how the agencies assessed the innovation effects of mergers. Theoretical background is the still open question...

Introduction -- Mergers and merger policy in the U.S. : an overview -- Evaluating merger outcomes -- Guide to merger analysis using difference-in-differences (Daniel Greenfield) -- Merger retrospectives : two studies -- Mergers and product prices -- Merger policy and remedies -- Retrospective...