31According to settled case-law, for the purposes of investigating the possibly dominant position of an undertaking, the possibilities of competition must be judged in the context of the market comprising the totality of the products which, with respect to their characteristics, are particularly suitable for satisfying constant needs and are only to a limited extent interchangeable with other products; those possibilities of competition must also be assessed in the light of the competitive conditions and of the structure of supply and demand (Nederlandsche Banden-Industrie-Michelin v Commission, paragraph 30 above, paragraph 37; Cases T-229/94 Deutsche Bahn v Commission [1997] ECR II-1689, paragraph 54; and T-219/99 British Airways v Commission [2003] ECR II-5917, paragraph 91). As is apparent inter alia from paragraph 7 of the Notice on market definition, the relevant product market therefore comprises all those products or services which are regarded as substitutable by consumers, by reason of the products’ characteristics, their prices and their intended use.
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