IBM. ATT. Microsoft. Intel. IBM (redux). Google. Twitter. Facebook. All are present or former leaders in key high-tech sectors. These firms also all have been the subject of serious antitrust scrutiny over the past three decades. All have been referred to at different times as “monopolies”...

In dealing with telecom operator and internet mergers in the late 1990s the European Commission adopted a pessimistic view of competition based on the then emerging theory of network effects. This paper takes a short and critical look at the Commission's use of network effects theory, and its...

This article examines the nature of the effect of the U.S. Supreme Court's Empagran decision through the lens of the global vitamins cartel, using legal and economic analysis and also empirical data to describe the effect. The article commences with a discussion of the analytic approach adopted...

Consolidation and increased concentration in the agrifood sector over the past two decades, combined with an increased use of alternative marketing agreements in the poultry and livestock industries, have fueled concerns of anti-competitive behavior among large agribusinesses such as the major...

The Antitrust Marathons explore enduring issues of competition and consumer policy on a comparative basis through roundtable discussions of senior officials, practitioners, and academics in more depth than is possible in traditional conference format. Each Antitrust Marathon includes special...

A tying arrangement is a seller’s requirement that a customer may purchase its “tying” product only by taking its “tied” product. In a variable proportion tie the purchaser can vary the amount of the tied product. For example, a customer might purchase a single printer, but either a...

Five great attempts have been made to achieve a true international harmonization of competition law in the twentieth century. None has been successful. Despite the failures of the League of Nations, the International Trade Organization (ITO), the Economic and Social Council of the United...

This work underlines some of the main issues that Member States face in attempting to reconcile national tort law systems with EU goals in competition law. As a matter of fact, the very notion of private enforcement tends to achieve two different purposes: on the one hand, corrective justice...

The co-legislators adopted the Digital Markets Act (DMA) in July 2022. The text is landmark legislation that imposes a list of ex-ante obligations and interdictions on large online platforms acting as “gatekeepers” in some core platform services (CPS). Yet, the DMA also imposes an obligation...