Court of Justice 31 May 2018, Case C-633/16: Judgment of the Court (Fifth Chamber) of 31 May 2018 (request for a preliminary ruling from the Sø- og Handelsretten — Denmark) — Ernst & Young P/S v Konkurrencerådet (Reference for a preliminary ruling — Control of concentrations of undertakings — Regulation (EC) No 139/2004 — Article 7(1) — Implementation of a concentration prior to notification to the European Commission and declaration of compatibility with the common market — Prohibition — Scope — Concept of ‘concentration’ — Termination of a cooperation agreement with a third party by one of the merging undertakings)

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