This short article (for a symposium on joint ventures) provides practitioners and law professor with a 20 question checklist to guide the competitive effects analysis of the formation of a joint venture and the specific restraints and conduct of the venture. The questions mainly focus on...

These comments (originally submitted to the DOJ and FTC in November 2009) make a number of comments relevant to revising the Merger Guidelines. The comments focus on the use of the GUPPI (gross upward pricing pressure index) in unilateral effects analysis. They also comment on the deterrence and...

Mergers and acquisitions are a major component of antitrust law and practice. The U.S. antitrust agencies spend a majority of their time on merger enforcement. The focus of most merger review at the agencies involves horizontal mergers, that is, mergers among firms that compete at the same level...

Anticompetitive conduct involved in purchasing labor services by a group of firms (or a single firm) sometimes may have the effect of benefiting downstream consumers even as the conduct harms the firms’ workers. Defendants may attempt to justify those restraints—and may argue the ancillary...

Now that the immediate fallout from the Supreme Court’s blockbuster Amex decision has cooled, this Article aims to give a first draft of its place in antitrust history and to offer a roadmap for the next stage of the evolution of platform antitrust analysis. We focus on several issues that...

We study strategic behavior by private litigants when courts' judgments are "inalienable" in the sense that it is unlawful to contract around them ex post. Inalienable judgments arise in many contexts, including antitrust, labor law, intellectual property, unfair competition, and various types...

Economists widely agree that, absent sufficient efficiencies or other offsetting factors, mergers that increase concentration substantially are likely to be anticompetitive. Further, holding everything else equal, the magnitude of anticompetitive effects tends to be larger, the larger is the...

The burden of proof to determine the “reasonable probability” that a merger violates Section 7 is not clear. Using the insightful puzzlement expressed by the court in the recent Bertelsmann merger case as a starting point, this pedagogical article explains the confusion arising from the fact...

There is currently great intellectual ferment over the proper antitrust liability standard governing allegedly exclusionary conduct under Section 2. This article (which is forthcoming in the Antitrust Law Journal) focuses on the two main competing liability standards: the profit-sacrifice...