Key facts of the case:

Reference for a preliminary ruling — Directive 95/46/EC — Personal data — Protection of natural persons with respect to the processing of that data — Order to deactivate a Facebook page (fan page) enabling the collection and processing of certain data of visitors to that page — Article 2(d) — Controller responsible for the processing of personal data — Article 4 — Applicable national law — Article 28 — National supervisory authorities — Powers of intervention of those authorities.

Outcome of the case:

On those grounds, the Court (Grand Chamber) hereby rules:

1. Article 2(d) of Directive 95/46/EC of the European Parliament and of the Council of 24 October 1995 on the protection of individuals with regard to the processing of personal data and on the free movement of such data must be interpreted as meaning that the concept of ‘controller’ within the meaning of that provision encompasses the administrator of a fan page hosted on a social network.
2. Articles 4 and 28 of Directive 95/46 must be interpreted as meaning that, where an undertaking established outside the European Union has several establishments in different Member States, the supervisory authority of a Member State is entitled to exercise the powers conferred on it by Article 28(3) of that directive with respect to an establishment of that undertaking situated in the territory of that Member State even if, as a result of the division of tasks within the group, first, that establishment is responsible solely for the sale of advertising space and other marketing activities in the territory of that Member State and, second, exclusive responsibility for collecting and processing personal data belongs, for the entire territory of the European Union, to an establishment situated in another Member State.
3. Article 4(1)(a) and Article 28(3) and (6) of Directive 95/46 must be interpreted as meaning that, where the supervisory authority of a Member State intends to exercise with respect to an entity established in the territory of that Member State the powers of intervention referred to in Article 28(3) of that directive, on the ground of infringements of the rules on the protection of personal data committed by a third party responsible for the processing of that data whose seat is in another Member State, that supervisory authority is competent to assess, independently of the supervisory authority of the other Member State, the lawfulness of such data processing and may exercise its powers of intervention with respect to the entity established in its territory without first calling on the supervisory authority of the other Member State to intervene.