Practical guide
How to draft an action for annulment before the CJEU with AI
4 min read · Updated June 2026 · Editorial oversight: Avv. Federico Papa
The action for annulment, governed by Art. 263 TFEU, is the primary instrument for judicial review of acts adopted by EU institutions, bodies, offices, and agencies that produce legal effects vis-à-vis third parties. This action enables natural and legal persons, Member States, and institutions to request the Court of Justice or the General Court to review the compliance of secondary law with the Treaties. The fundamental function of this remedy is to ensure adherence to the principle of legality within the Union's legal order, resulting, if successful, in a declaration that the act is void pursuant to Art. 264 TFEU. This procedure is characterized by strict admissibility requirements and short limitation periods that demand high technical precision.
In brief
Actions for annulment under Article 263 TFEU facilitate judicial review of acts by European Union institutions, bodies, and agencies. Private parties must demonstrate direct and individual concern or challenge regulatory acts lacking implementing measures. The mandatory time limit is two months, plus a ten-day fixed extension for distance. Grounds for annulment include lack of competence, infringement of essential procedural requirements, Treaty violations, or misuse of power. Applications drafted with AI assistance must be submitted via e-Curia. Successful claims result in declarations of nullity under Article 264 TFEU.
The steps
- 1.
Verification of legal standing
The first crucial step is to ascertain whether the applicant has legal standing to challenge the specific act. While Member States and the main institutions are privileged applicants, private parties must demonstrate that the act concerns them directly and individually, or that it is a regulatory act which does not entail implementing measures. It is essential to analyze the nature of the contested act to determine whether it produces binding effects capable of affecting the applicant's legal position. Without proof of such interest in bringing proceedings, the application will be declared inadmissible without an examination of the merits.
- 2.
Calculation and compliance with filing deadlines
The action must be brought within a mandatory time limit of two months from the publication of the act or its notification to the applicant. To this deadline, a fixed extension of ten days on account of distance must be added, as provided for in the Rules of Procedure. It is essential to monitor the exact date of publication in the Official Journal of the European Union to prevent the forfeiture of the right of action. Failure to comply with these time limits renders the act final and unchallengeable, save for exceptional cases of unforeseeable circumstances or force majeure.
- 3.
Articulation of grounds for annulment
The grounds for annulment must be framed within the four exhaustive categories provided for in Art. 263 TFEU: lack of competence, infringement of an essential procedural requirement, infringement of the Treaties or of any rule of law relating to their application, or misuse of powers. Counsel must link every identified defect to a specific breach of law or failure to state reasons that invalidates the act. A generic description of grievances is not sufficient; a rigorous legal argument is required to demonstrate how the defect affected the content of the contested act. Precision in qualifying the plea is decisive for the outcome of the dispute.
- 4.
Formal drafting and filing via e-Curia
The application must contain a precise indication of the applicant, the defendant, the subject matter of the proceedings, and a summary of the pleas in law. Drafting must strictly comply with the practical instructions to parties issued by the Court regarding document length and formatting. Filing must be carried out through the e-Curia platform following the registration and authentication of legal counsel. All annexes must be numbered and listed in a separate schedule to facilitate consultation by the judges and the registry.
- 5.
Analysis of the judgment's consequences
If the action is well founded, the Court declares the act to be void pursuant to Art. 264 TFEU, generally with retroactive effect. However, the Court may state which of the effects of the act which it has declared void shall be considered as definitive, where necessary for reasons of legal certainty or to prevent serious harm. The institution that issued the measure is required to take the necessary measures to comply with the judgment. It is important to evaluate whether the requested annulment is total or partial and how it impacts related acts or implementation measures already adopted.
Legal basis: art. 263 TFUEart. 264 TFUE
The template structure
The standard sections that make up the document. The full template can be opened and completed directly on edit.legal.
Court addressed
Identification of the General Court or the Court of Justice based on the nature of the applicant and the contested act.
Parties
Full identification of the applicant, its authorized legal representatives, and the defendant EU institution.
Subject matter and admissibility
Summary of the claim and analytical demonstration of legal standing and compliance with time limits.
Contested act
Unique identification of the European Union act for which partial or total annulment is sought.
Grounds for annulment
Articulation of the grounds of illegality under Art. 263 TFEU supported by factual and legal arguments.
Form of order sought
Formal request for the annulment of the act and application for costs to be borne by the losing party.
Date and signature
Digital signature of authorized legal counsel and a numbered index of all documents attached to the application.
Mistakes to avoid
- Incorrect assessment of private applicants' standing, overlooking the requirement of direct and individual concern for legislative acts.
- Inaccurate calculation of the two-month deadline by failing to account for the actual publication date or the extension for distance.
- Failure to specifically articulate one of the four grounds for annulment under Art. 263 TFEU, rendering the application vague.
- Filing the application without proof of the power of attorney or documentation certifying the legal existence of a corporate applicant.
Frequently asked questions
What is the deadline for challenging an EU act?
The deadline is two months from publication or notification of the act, plus a fixed ten-day extension for distance. It is a mandatory and non-extendable time limit.
How is jurisdiction divided between the General Court and the Court of Justice?
Jurisdiction is established by the Treaties and the Statute of the Court: generally, the General Court hears at first instance actions brought by private parties and Member States against acts of the Commission or EU agencies.
Does the annulment take immediate effect for everyone?
Yes, under Art. 264 TFEU the annulled act is removed from the legal order with ex tunc effect, unless the Court considers it necessary to maintain certain effects of the act.
What edit.legal automates
- —Automatic structuring of the application according to the official guidelines of the Court of Justice of the European Union.
- —Assistance in qualifying legal defects under Art. 263 TFEU to prevent vague pleas.
- —Intelligent checklist to verify legal standing and mandatory filing deadlines.
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