This handbook chapter appears in Antitrust Law & Economics (Keith Hylton, ed. 2010). It describes the role of market concentration in the legal framework for the antitrust review of horizontal mergers and evaluates the extent to which modern economic analysis supports a role for concentration in...

In this article we introduce the reader to the most important cases in competition law between the beginnings of 2012, until May 2013. Our focus is on either the novelties in the cases or on issues which might be interesting for an international readership due to the recent developments and...