The Member States 25 March 1957, Treaty establishing the European Community (Nice consolidated version)#Part Three: Community policies#Title VI: Common rules on competition, taxation and approximation of laws#Chapter 1: Rules on competition#Section 1: Rules applying to undertakings#Article 82#Article 86 - EC Treaty (Maastricht consolidated version)#Article 86 - EEC Treaty

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Article 82 of the Treaty establishing the European Community (Nice consolidated version) prohibits any abuse by one or more undertakings of a dominant position within the common market or a substantial part thereof, insofar as such abuse may affect trade between Member States. The provision enumerates specific forms of prohibited abusive conduct, including the imposition of unfair trading conditions, limitation of production or technical development to the prejudice of consumers, application of dissimilar conditions to equivalent transactions causing competitive disadvantage, and tying arrangements requiring acceptance of supplementary obligations unconnected to the subject matter of the contract. The prohibition applies to undertakings holding a dominant position and is directed at protecting competition and trading parties within the internal market.AI