Article 86 EEC

To the extent to which trade between any Member States may be affected thereby, action by one or more enterprises to take improper advantage of a dominant position within the Common Market or within a substantial part of it shall be deemed to be incompatible with the Common Market and shall hereby be prohibited.

Such improper practices may, in particular, consist in:

(a) the direct or indirect imposition of any inequitable purchase or selling prices or of any other inequitable trading conditions;

(b) the limitation of production, markets or technical development to the prejudice of consumers;

(c) the application to parties to transactions of unequal terms in respect of equivalent supplies, thereby placing them at a competitive disadvantage; or

(d) the subjecting of the conclusion of a contract to the acceptance, by a party, of additional supplies which, either by their nature or according to commercial usage, have no connection with the subject of such contract.