66In so far as the appellants claim, in the alternative, that the Court should reduce the amount of the fine imposed on them, it should be recalled that the sanction for a breach, by a court of the European Union, of its obligation under the second paragraph of Article 47 of the Charter to adjudicate on the cases before it within a reasonable time must be an action for damages brought before the General Court, since such an action constitutes an effective remedy. Accordingly, a claim for compensation for the damage caused by the failure on the part of the General Court to adjudicate within a reasonable time may not be made directly to the Court of Justice in the context of an appeal, but must be brought before the General Court itself (Gascogne Sack Deutschland v Commission EU:C:2013:768, paragraphs 86 to 90; Kendrion v Commission EU:C:2013:771, paragraphs 91 to 95; and Groupe Gascogne v Commission EU:C:2013:770, paragraphs 80 to 84).
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