61Furthermore, in regard to acquisition of distinctive character through use, the identification by the relevant class of persons of the product or service as originating from a given undertaking must be as a result of the use of the mark as a trade mark (Case C-299/99 Philips [2002] ECR I-5475, paragraph 64, and Nestlé, paragraph 26). The expression ‘use of the mark as a trade mark’ must therefore be understood as referring to use of the mark for the purposes of the identification by the relevant class of persons of the product or service as originating from a given undertaking (Nestlé, paragraph 29).
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