23That distinctive character of a registered trade mark may be the result both of the use, as part of a registered trade mark, of a component thereof and of the use of a separate mark in conjunction with a registered trade mark. In both cases, it is sufficient that, in consequence of such use, the relevant class of persons actually perceive the product or service at issue as originating from a given undertaking (see, by analogy, Case C-353/03 Nestlé [2005] ECR I-6135, paragraph 30).
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