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Competition Law

Competition Law (9th edn)

Richard Whish and David Bailey
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date: 28 November 2023

p. 1805. Article 102locked

p. 1805. Article 102locked

  • Richard WhishRichard WhishEmeritus Professor of Law at King’s College London
  •  and David BaileyDavid BaileyVisiting Professor of Law at King’s College London


This chapter discusses the main features of Article 102 of the Treaty on the Functioning of the European Union (TFEU), which is concerned with the abusive conduct of dominant firms. It begins by introducing the European Commission’s Guidance on the Commission’s enforcement priorities in applying Article [102 TFEU] to abusive exclusionary conduct by dominant undertakings. It then discusses the concept of undertaking, the requirement of an effect on trade between Member States, the concept of a dominant position and the requirement that any dominant position must be held in a substantial part of the internal market. The chapter also considers the meaning of abuse of a dominant position, which is a complex and controversial issue. A discussion of the defences to allegations of abuse is followed by a brief look at the consequences of infringing Article 102.

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