This is a survey of the economic principles that underlie antitrust law and how those principles relate to competition policy. We address four core subject areas: market power, collusion, mergers between competitors, and monopolization. In each area, we select the most relevant portions of...

The Trump Administration might follow Donald Trump's populist campaign rhetoric and adopt an approach to antitrust enforcement that emphasizes reining in corporate power. This approach would honor the preferences of the working-class voters who have put Trump into office by vigorously enforcing...

We offer recommendations for how the Department of Justice and the Federal Trade Commission can update the Horizontal Merger Guidelines ("HMGs") to strengthen merger enforcement. We focus our recommendations on three main areas. First, we suggest several ways that the HMGs can strengthen the...

We describe a simple initial indicator of whether a proposed merger between rivals in a differentiated product industry is likely to raise prices through unilateral effects. Our diagnostic calibrates upward pricing pressure (UPP) resulting from the merger, based on the price/cost margins of the...

The 2011 America Invents Act was the most significant reform to the United States patent system in over fifty years. However, the AIA did not address a number of major problems associated with patent litigation in the United States. In this paper, we provide an economic analysis of post-AIA...

The past forty years have witnessed a remarkable transformation in horizontal merger enforcement in the United States. With no change in the underlying statute, the Clayton Act, the weight given to market concentration by the federal courts and by the federal antitrust agencies has declined...