The comprehensive theoretical literature on mobile termination rates (MTRs) is inconclusive on how the level of MTRs affects overall consumer charges and firms’ profit. In a theoretical model, well suited for econometric implementation, we show that where consumers buy a bundle with included...

The European Commission recently considered abolishing the notification system and focusing on a regime of ex-post investigations. Our objective is to show that a better understanding of markets can justify this reform. Whe the precision of the Competition Authority's analysis is not high...

Wheras non-price restrictions such as exclusive territories are often tolerated while Resale Price Maintenance (RPM) is rather unanimously forbidden, the economic analysis shows so far that both types of restraints have positive and negative effects on welfare, in such a way that the balance is...

[eng] This article focuses on decentralized implementation of European Union competition policy. Delegating the control of interfirm agreements makes it possible to benefit from better local information. However , because of conflicts of interest, decisions taken may not be in line with overall...

Council Regulation (EC) 1/2003 came into force on the 1st of May 2004 replacing themandatory notification of agreements between firms by a regime of ex post monitoring.This paper provides a theoretical justification for this shift based on the competitionauthority’s accuracy of judgement. We...

A supplier is known to be subject to opportunism when contracting secretly with downstream competitors, particularly when downstream firms have "passive beliefs.'' We stress that in many situations, an equilibrium with passive beliefs may not exist and passive beliefs appear less plausible than...