After 1 May 2004, the enforcement of European antitrust law entered a new era. At the same time as 10 new Member States joined the European Union, Regulation No 17, which had governed the enforcement of Articles 81 and 82 EC since 1962, was replaced by Regulation No 1/2003, which has ushered in...

Introduction -- Which horizontal agreements are illegal? -- What unilateral conduct is illegal? -- Vertical agreements that restrict dealing with rivals -- Distorting downstream distribution of a supplier's products -- Proving an agreement or concerted action -- Mergers and acquisitions --...