This EU competition law treatise fully integrates economic reasoning in its treatment of the decisional practice of the European Commission and the case-law of the European Court of Justice. Since the European Commission's move to a “more economic approach” to competition law reasoning and decisional practice, the use of economic argument in competition law cases has become a stricter requirement. Many national competition authorities are also increasingly moving away from a legalistic analysis of a firm's conduct to an effect-based analysis of such conduct, indeed most competition cases today involve teams composed of lawyers and industrial organisation economists. Ensuring an integrated approach to legal and economic analysis, the book contains economic reasoning throughout in accessible form, and, more pertinently for practitioners, examines economics in the light of how it is used and put to effect in the courts and decision-making institutions of the EU. A general introductory section sets EU competition law in its historical context. The second chapter goes on to explore the economic foundations of EU competition law. What follows is an integrated treatment of each of the core substantive areas of EU competition law, including Article 101 TFEU, Article 102 TFEU, mergers, cartels and other horizontal agreements, vertical restraints, and technology transfer agreements.