35As regards those functions, it must be borne in mind that the essential function of a trade mark is to guarantee the identity of the origin of the marked goods or service to the consumer or end user by enabling him to distinguish the goods or service from others which have another origin (judgment of 23 March 2010, Google France and Google, C‑236/08 to C‑238/08, EU:C:2010:159, paragraph 82 and the case-law cited). It serves in particular to guarantee that all the goods or services bearing it have been manufactured or supplied under the control of a single undertaking which is responsible for their quality, which it does in order to fulfil its essential role in the system of undistorted competition (see, to that effect, the judgments of 12 November 2002, Arsenal Football Club, C‑206/01, EU:C:2002:651, paragraph 48, and of 12 July 2011, L’Oréal and Others, C‑324/09, EU:C:2011:474, paragraph 80).
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