We present a two-stage model of competing ad auctions. Search engines attract users via Cournot-style competition. Meanwhile, each advertiser must pay a participation cost to use each ad platform, and advertiser entry strategies are derived using symmetric Bayes-Nash equilibrium that lead to the...

This note analyses the competitiveness of different segments of the telecommunications markets in the five countries (United States, United Kingdom, Australia, New Zealand, and Chile) shows that those countries that have relied on a proper balance between antitrust and sector-specific regulation...

Among the countries that have fully liberalized their telecommunications sector, some have chosen to rely mainly on sector-specific rules often (but not always) applied by sector-specific institutions, while others have focused mainly on economy-wide antitrust rules and institutions to control...

The creation of a growing number of agencies at the EU level is one of the most significant developments in the administrative structure of the EU. These agencies play a useful role as they allow the Commission to decentralize a number of scientific, technical, or observatory functions to...

We review the burgeoning literature on two-sided markets focusing on the different definitions that have been proposed. In particular, we show how the well-known definition given by Evans is a particular case of the more general definition proposed by Rochet and Tirole. We then identify the...

Striking the right balance in dealing with emerging issues at the intersection between competition and IPR's can present serious challenges. Damien Geradin & Hee-Eun Kim (Covington & Burling)

Firm structure and the degree of vertical integration lie at the core of a key intellectual property concern currently under debate: "patent trolls." While court opinions and competition agency decisions have focused on "non-practicing" patent holders as synonymous with trolls and hold up...