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University of Pennsylvania Carey Law School

Mergers

2009

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Full-Text Articles in Law

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

All Faculty Scholarship

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

All Faculty Scholarship

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 …