Antitrust and competition law have grown dramatically in importance and significance over the last fifty years. US antitrust law has been the principal source of inspiration for jurisdictions wishing to introduce regulation to control cartels and monopolization, and antitrust regulation has now...

The regulation of collective dominance is a relatively novel concept in most African telecommunications sectors. This article argues that the Nigerian legal framework for regulation of collective dominance, which was modeled substantially on EU law, although an improvement on previous rules,...

In February 2022, the German Federal Ministry of Economic Affairs and Climate Action presented its Competition Policy Agenda until 2025. Among other things, it aims to strengthen cartel prosecution by providing better protection for leniency witnesses and reforming the Cartel Damages Directive....

This Essay analyzes expressive boycotts in the market for wigs and hair extensions, where consumers are primarily African Americans and producers are almost uniformly Korean Americans. This type of ethnically segmented and misaligned (“ESM”) market raises unique doctrinal and theoretical...

This paper proposes an understanding of abuse of collective dominance or shared monopolization that does not outlaw oligopolistic tacit collusion as such, but that reputes abusive a set of tactics adopted by tacitly colluding oligopolists exposed to disruption. As much as deviation is an...

The most pressing debates in antitrust today center on major platforms like Amazon, Google, and Facebook. Platform markets are subject to strong network effects, which tend to create barriers to entry and reinforce market power. Frequently, the only way for a new platform to enter the market...

Complexity science is widely used across the policy spectrum but not in antitrust. This is unfortunate. Complexity science enables a rich understanding of competition beyond the simplistic descriptions of markets and firms proposed by neoclassical models and their contemporary neo-Brandeisian...

This paper explores the concept of vertical restraints or restrictions. It includes references to the competition law regimes of the European Union (EU), United States (US), and the People's Republic of China, as well as the key case law. It is part of the Concurrences' Global Dictionary of...

A general theoretical and empirical framework is developed for assessing the potential of a vertically integrated firm to foreclose downstream competitors. Using this framework a policymaker may also evaluate the empirical welfare effects from a vertically integrated firm raising rivals' costs....