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Analyzing Horizontal Mergers: Unilateral Effects In Product-Differentiated Markets, Herbert J. Hovenkamp Mar 2009

Analyzing Horizontal Mergers: Unilateral Effects In Product-Differentiated Markets, Herbert J. Hovenkamp

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This essay offers a brief, non-technical exposition of the antitrust analysis of horizontal mergers in product differentiated markets where the resulting price increase is thought to be unilateral - that is, only the post-merger firm increases its prices while other firms in the market do not. More realistically, non-merging firms who are reasonably close in product space to the merging firm will also be able to increase their prices when the post-merger firm's prices rise. The unilateral effects theory is robust and has become quite conventional in merger analysis. There is certainly no reason for thinking that it involves any …


Mergers And Market Dominance, Herbert J. Hovenkamp Feb 2009

Mergers And Market Dominance, Herbert J. Hovenkamp

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Mergers involving dominant firms legitimately receive close scrutiny under the antitrust laws, even if they involve tiny firms. Further, they should be examined closely even in markets that generally exhibit low entry barriers. Many of the so-called "unilateral effects" cases in current merger law are in fact mergers that create dominant firms. The rhetoric of unilateral effects often serves to disguise this fact by presenting the situation as if it involves the ability of a small number of firms (typically two or three) in a much larger market to increase their price to unacceptable levels. In fact, if such a …


Efficiencies In Merger Analysis: Alchemy In The Age Of Empiricism?, Thomas L. Greaney Jan 2009

Efficiencies In Merger Analysis: Alchemy In The Age Of Empiricism?, Thomas L. Greaney

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One is hard-pressed to find in law an undertaking more fraught with uncertainty than the application of the efficiencies defense in merger analysis. Generalist fact finders (judges) and politically-attuned government officials (prosecutors and regulators) are charged with two Herculean tasks: (1) predicting the outcome of organic changes in business enterprises and (2) comparing the magnitude of those changes to the equally uncertain amount of harm to future competition that the transaction will cause. Given the enormous, perhaps intractable, uncertainty of this inquiry, it is therefore paradoxical that many of the strongest advocates for strengthening the role of efficiencies analysis in …