Antitrust enforcement efforts both in Europe and the United States have recently increased in number of actions taken and the amount of fines imposed in high-tech industries. Recent decisions in this field have rekindled in-depth and largely unresolved debates concerning the appropriate role of...

One of the most heated discussions in economics in recent years has concerned the relationship between market structure and innovation. After a half-century of debate and innumerable studies, the consensus is that there is no clear answer to the question. On a concrete level, the uncertainty...

This essay is the introduction to a forthcoming volume entitled, Regulating Innovation: Competition Policy and Patent Law Under Uncertainty (Cambridge U. Press 2009 forthcoming). In addition to introducing all of the papers in the volume, this essay introduces the organizing themes of the...

The Microsoft antitrust case focused public attention on the role of antitrust enforcement in preserving the forces of innovation in high-technology markets. Traditionally, regulators focused on whether companies artificially hiked prices or reduced output. Now, they're increasingly likely to...

The treatment of innovation within the merger context by U.S. Antitrust Agencies continues to evolve, with regard to both general statements of enforcement policy and specific enforcement decisions. The respective merger guidelines issued by the Department of Justice and the Federal Trade...

This slide deck reviews the extant empirical literature on common ownership concentration on firm behavior, innovation, and product market outcomes, as presented at the FTC hearings on common ownership and competition in December 2018. It is primarily based on this literature review:...