Article 50 - Right not to be tried or punished twice in criminal proceedings for the same criminal offence
On those grounds, the Court (Fourth Chamber) hereby rules:
The principle of ne bis in idem enshrined in Article 50 of the Charter of Fundamental Rights of the European Union, proclaimed in Nice on 7 December 2000, must be interpreted as not precluding a national competition authority from fining an undertaking in a single decision for an infringement of national competition law and for an infringement of Article 82 EC. In such a situation, the national competition authority must nevertheless ensure that the fines are proportionate to the nature of the infringement.
1, 14, 19, 21, 30-31, 39-40