In FTC v. Actavis, Inc., the Supreme Court considered "reverse payment" settlements of patent infringement litigation. In such a settlement, a patentee pays the alleged infringer to settle, and the alleged infringer agrees not to enter the market for a period of time. The Court held that a...

Scholars and courts have long debated whether and when "parallel pricing" — adoption of the same price by every firm in a market — should be considered a violation of antitrust law. But there has been a comparative neglect of the importance of "parallel exclusion" — conduct, engaged in by...

Scholars and antitrust enforcers have raised concerns about anticompetitive effects that may arise when institutional investors hold substantial stakes in competing firms. Their concern rests on empirical evidence that such common concentrated ownership is associated with higher prices and lower...

We present a simple model of common ownership in which an investor chooses its stake in competing firms in light of the effects on firm behavior and firm profits. Two firms compete in Cournot duopoly, and ownership affects a firm’s objective function in the manner posited by Bresnahan & Salop...

Antitrust courts often confront “mixed” conduct that has two contrasting effects, one harmful and the other beneficial. For example, a nationwide agreement not to pay college football players harms the players while benefiting fans of amateur sports. An important tool for analyzing mixed...

This essay considers antitrust objections to recent settlements of intellectual property litigation. Part I examines the Google Book Search settlement, which resolves a copyright dispute between Google and a class of authors and publishers, including the creators of so-called orphan works. It...

“Reverse” or “exclusion” payments to settle pharmaceutical patent lawsuits are facilitated because the Hatch-Waxman Act has been interpreted to give 180 days of generic exclusivity to the first generic company to file for FDA approval, whether or not that company succeeds in invalidating...