Between Immutability and Adaptability: a structured Flexibility in Litigation before the Court of Justice of the European Union
Tra immutabilità e adattamento: una modellabilità regolamentata del contenzioso dinanzi al Tribunale dell’Unione europea
Entre immutabilité et adaptation : une plasticité encadrée du litige devant le Tribunal de l’Union européenne
The principle of the immutability of the dispute constitutes a fundamental feature of European Union litigation, as it ensures the stability of the subject matter of the action, legal certainty, and respect for the adversarial principle. However, situations involving the replacement or amendment, during the course of proceedings, of the contested act have led the EU Courts to recognise the possibility of adapting an application, a mechanism that is now codified in the Rules of Procedure of the General Court.
This article highlights the transformation of a judicially created exception into a structured procedural mechanism, examining its origins, underlying rationale and objectives. The mechanism is based on the principle of equivalence between an application and a statement of modification thereof. The article also analyses the conditions governing the availability and admissibility of a modification, as well as its procedural framework, in light of regulatory developments and the most recent case law. Against this background, the article identifies the factors that may undermine the ability to respond to necessary developments arising in the course of proceedings, thereby limiting the scope of this mechanism. It nevertheless demonstrates that, ultimately, rather than constituting a genuine derogation from the principle of the immutability of the dispute, the modification of an application should be regarded as a narrowly circumscribed exception designed to reconcile the stability of the procedural framework with the effectiveness of judicial protection.
