55As to the impact of the principle of res judicata on the situation at issue in the main proceedings, it need only be observed that recognition of the principle of State liability for a decision of a court adjudicating at last instance does not in itself have the consequence of calling in question that decision as res judicata. Proceedings seeking to render the State liable do not have the same purpose and do not necessarily involve the same parties as the proceedings resulting in the decision which has acquired the status of res judicata. In an action brought to establish the liability of the State the applicant will, if successful, secure an order against it for reparation of the damage incurred but will not necessarily obtain a declaration invalidating the status of res judicata of the judicial decision which was responsible for that damage. In any event, the principle of State liability inherent in the EU legal order requires such reparation, but not revision of the judicial decision which was responsible for the damage (see judgment in Köbler, C‑224/01, EU:C:2003:513, paragraph 39).
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