Law Commons^™

Competitive Harm From Vertical Mergers, Herbert J. Hovenkamp

All Faculty Scholarship

The antitrust enforcement Agencies' 2020 Vertical Merger Guidelines introduce a nontechnical application of bargaining theory into the assessment of competitive effects from vertical acquisitions. The economics of such bargaining is complex and can produce skepticism among judges, who might regard its mathematics as overly technical, its game theory as excessively theoretical or speculative, or its assumptions as unrealistic.

However, we have been there before. The introduction of concentration indexes, particularly the HHI, in the Merger Guidelines was initially met with skepticism but gradually they were accepted as judges became more comfortable with them. The same thing very largely happened again …

Prophylactic Merger Policy, Herbert J. Hovenkamp

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An important purpose of the antitrust merger law is to arrest certain anticompetitive practices or outcomes in their “incipiency.” Many Clayton Act decisions involving both mergers and other practices had recognized the idea as early as the 1920s. In Brown Shoe the Supreme Court doubled down on the idea, attributing to Congress a concern about a “rising tide of economic concentration” that must be halted “at its outset and before it gathered momentum.” The Supreme Court did not explain why an incipiency test was needed to address this particular problem. Once structural thresholds for identifying problematic mergers are identified there …

Competition Policy And The Technologies Of Information, Herbert J. Hovenkamp

All Faculty Scholarship

When we speak about information and competition policy we are usually thinking about oral or written communications that have an anticompetitive potential, and mainly in the context of collusion of exclusionary threats. These are important topics. Indeed, among the most difficult problems that competition policy has had to confront over the years is understanding communications that can be construed as either threats to exclude or as offers to collude or facilitators of collusion.

My topic here, however, is the relationship between information technologies and competition policy. Technological change can both induce and undermine the use of information to facilitate anticompetitive …

Mergers, Market Dominance And The Lundbeck Case, Herbert J. Hovenkamp

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In Lundbeck the Eighth Circuit affirmed a district court’s judgment that a merger involving the only two drugs approved for treating a serious heart condition in infants was lawful. Although the drugs treated the same condition they were not bioequivalents. The Eighth Circuit approved the district court’s conclusion that they had not been shown to be in the same relevant market.

Most mergers that are subject to challenge under the antitrust laws occur in markets that exhibit some degree of product differentiation. The Lundbeck case illustrates some of the problems that can arise when courts apply ideas derived from models …