The United States Department of Justice (“DOJ”) and three overlapping groups of states have filed federal antitrust cases alleging Google has monopolized internet search, search advertising, internet advertising technologies, and app distribution on Android phones. In this Article, we focus...

A careful review of the evidence that was available at the time Microsoft was litigated and has accumulated since indicates that the conduct by which Microsoft was found to have unlawfully preserved monopoly power in personal computer operating systems was largely ineffectual. The entry barrier...

Frank Easterbrook's 1984 article, The Limits of Antitrust, did not focus on public antitrust enforcement. Nevertheless, it expressed the kind of antitrust thinking that led the Antitrust Division of the U.S. Department of Justice, around the same time, to shift its resources to cartel...

Section III.E of the final judgments in the American Microsoft case requires Microsoft to make available to software developers certain communications protocols that Windows client operating systems use to interoperate with Microsoft's server operating systems. This provision has been by far the...

An important provision in each of the final judgments in the government's Microsoft antitrust case requires Microsoft "make available" to software developers the communications protocols that Windows client operating systems use to interoperate "natively" (that is, without adding software) with...