This essay offers a brief, non-technical exposition of the antitrust analysis of horizontal mergers in product differentiated markets where the resulting price increase is thought to be unilateral - that is, only the post-merger firm increases its prices while other firms in the market do not....

The Neal Report, which was commissioned by Lyndon Johnson and published in 1967, is rightfully criticized for representing the past rather than the future of antitrust. Its authors completely embraced a theory of competition and industrial organization that had dominated American economic...

Mergers involving dominant firms legitimately receive close scrutiny under the antitrust laws, even if they involve tiny firms. Further, they should be examined closely even in markets that generally exhibit low entry barriers. Many of the so-called quot;unilateral effectsquot; cases in current...

This article, which was published in 1985, describes the development of a "Post-Chicago" antitrust policy. The Chicago School of antitrust analysis has made an important and lasting contribution to antitrust policy. The School has placed an emphasis on economic analysis in antitrust...

This historical overview examines the relationship between antitrust policy and intellectual property in the United States since 1890. Over most of this history, judges imagined far greater conflicts between antitrust policy and intellectual property rights than actually existed, or else relied...

Joseph Schumpeter's vision of competition saw it as a destructive process in which effort, assets and fortunes were continuously destroyed by innovation. One possible implication is that antitrust's attention on short-run price and output issues is myopic: what seems at first glance to be a...

Many patent applications are rejected upon initial submission, but they are almost never rejected with absolute finality. Further, subsequent to filing its original application a patent applicant might wish to write an application with broader or somewhat different claims, or perhaps add claims...