Actions for Annulment: Judicial Review of EU Institutional Acts

Actions for Annulment: Judicial Review of EU Institutional Acts

1. Introduction

The European Union is founded on the principle that public authority must be exercised within the limits established by law. EU institutions, bodies, offices, and agencies possess extensive legislative, executive, regulatory, and administrative powers. However, the existence of those powers does not mean that their exercise is beyond judicial scrutiny.

The Treaties establish a system of judicial review through which the legality of acts adopted by EU institutions and other Union bodies may be examined by the Court of Justice of the European Union (CJEU). One of the central mechanisms in this system is the action for annulment under Article 263 of the Treaty on the Functioning of the European Union (TFEU).

An action for annulment enables an eligible applicant to challenge an EU act on the ground that it violates the Treaties or another applicable rule of EU law. If the action is successful, the Court may declare the contested act void, either in whole or in part, subject to the rules governing the effects of its judgment.

The procedure performs two complementary constitutional functions.

First, it protects the principle of legality by ensuring that EU institutions remain within the limits of their powers. An institution cannot lawfully exercise a competence that the Treaties have not conferred upon it, disregard essential procedural requirements, or use its powers for purposes other than those for which they were granted.

Second, the action for annulment contributes to the protection of individuals and organisations affected by EU institutional decisions. Businesses, associations, and natural persons may challenge certain EU acts, although the conditions governing their standing are considerably more restrictive than those applicable to Member States and the principal EU institutions.

The legal framework is primarily established by Articles 263 and 264 TFEU. It is complemented by Article 265, which concerns failures to act, Article 266, which governs compliance with judgments annulling EU acts, Article 267, which establishes the preliminary reference procedure, and Articles 278 and 279, which concern interim judicial protection.

The action for annulment is therefore not simply a procedural remedy. It is a central component of the constitutional system through which the European Union subjects the exercise of its own institutional authority to the rule of law.

2. Legal Basis and Purpose of Article 263 TFEU

Article 263 TFEU confers jurisdiction on the CJEU to review the legality of specified acts adopted by EU institutions, bodies, offices, and agencies.

Its first paragraph identifies the categories of acts that may be reviewed. These include:

• Legislative acts of the European Union.
• Acts of the Council, the European Commission, and the European Central Bank, other than recommendations and opinions.
• Acts of the European Parliament and the European Council intended to produce legal effects vis-à-vis third parties.
• Acts of EU bodies, offices, and agencies intended to produce legal effects vis-à-vis third parties.

The provision establishes a general principle: an EU measure that produces binding legal effects may, subject to the relevant conditions, be subject to judicial review.

The Court’s jurisdiction is not limited to traditional legislative instruments such as regulations, directives, and decisions. It may also extend to administrative and regulatory measures, provided that they produce the legal effects required by Article 263.

The purpose of the procedure is to ensure that EU institutional action remains consistent with the Treaties and the broader body of EU law.

An action may therefore challenge an act on grounds such as:

• The institution lacked the competence to adopt it.
• An essential procedural requirement was infringed.
• The act violates the Treaties or another applicable rule of EU law.
• The institution misused its powers.

These grounds are expressly identified in Article 263(2) TFEU.

The action is generally concerned with the legality of the contested measure at the time of its adoption. It is not an ordinary appeal against the policy merits of an EU decision. The Court does not simply replace the political or administrative assessment of the institution with its own preferred policy choice.

Instead, it determines whether the institution acted within the legal boundaries established by the Treaties and applicable law.

This distinction is particularly important in areas where EU institutions enjoy a broad margin of discretion, such as economic policy, complex scientific assessments, competition regulation, and technical risk evaluation. The existence of discretion does not eliminate judicial review, but it may influence the intensity of the Court’s examination.

3. Which EU Acts May Be Challenged?

The admissibility of an action for annulment depends initially on whether the contested measure is an act capable of judicial review under Article 263.

The provision does not permit an action against every communication, opinion, preparatory document, or institutional statement.

The essential question is whether the measure produces binding legal effects capable of affecting the legal position of third parties.

3.1. Legislative Acts

Legislative acts are adopted through the ordinary legislative procedure or a special legislative procedure, as defined by Article 289 TFEU.

They include legislative regulations, directives, and decisions.

Such acts may be challenged by the privileged and semi-privileged applicants identified in Article 263. Natural and legal persons may also bring actions, but they must satisfy the standing requirements established by Article 263(4).

The fact that a measure is legislative does not place it beyond judicial review. EU legislation must comply with the Treaties, the Charter of Fundamental Rights, and other applicable rules of EU law.

3.2. Regulations, Directives, and Decisions

Regulations, directives, and decisions may be subject to an action for annulment where they fall within the scope of Article 263.

Their legal form is relevant, but it is not the only consideration.

A regulation may be a legislative act or a non-legislative regulatory act. A decision may be addressed to a specific undertaking or may produce legal effects for a broader group of persons.

For example, a Commission decision imposing a fine on an undertaking may be challenged by the undertaking to which it is addressed.

A Commission decision concerning State aid may be challenged by an undertaking or competitor where the conditions governing standing are satisfied.

3.3. Acts of EU Bodies, Offices, and Agencies

The jurisdiction of the Court also extends to acts adopted by Union bodies, offices, and agencies when those acts are intended to produce legal effects vis-à-vis third parties.

This is significant because the institutional structure of the EU has expanded beyond the principal institutions.

EU agencies and other bodies exercise regulatory, supervisory, technical, and administrative functions in areas such as financial markets, aviation safety, medicines, chemicals, and data protection.

Their institutional status does not automatically exempt their legally binding acts from judicial review.

The legal framework governing a particular agency may also establish specific conditions and arrangements for actions brought by natural or legal persons. Article 263(5) expressly recognises that possibility.

3.4. Recommendations and Opinions

Recommendations and opinions are expressly excluded from the ordinary categories of reviewable acts identified in Article 263(1).

They generally do not impose binding legal obligations.

However, the legal classification given to a measure by the institution is not necessarily decisive. A document described as an opinion, communication, or recommendation may still require examination of its substance and legal effects.

The Court considers the actual nature of the measure rather than relying exclusively on its formal title.

This approach prevents institutions from avoiding judicial review simply by choosing a non-binding label for a measure that, in substance, produces binding legal consequences.

3.5. Preparatory and Intermediate Measures

Not every step in an institutional decision-making process may be challenged independently.

A preliminary assessment, draft proposal, recommendation to another institution, or provisional position will generally not constitute a reviewable act if it does not independently produce binding legal effects.

In IBM v Commission (Case 60/81), the Court explained the distinction between measures that definitively determine an institution’s position and intermediate measures that prepare the final decision.

The relevant question is whether the contested measure produces independent legal effects and definitively determines the institutional position, rather than merely preparing a subsequent act.

This principle is important in complex administrative procedures. An applicant cannot ordinarily challenge every preliminary step separately. Judicial review is generally directed at the measure that finally determines the legal position.

3.6. Acts Producing Legal Effects: The Substance of the Measure

The Court assesses whether a measure produces legal effects by examining its substance, context, and the powers of the institution that adopted it.

In IBM v Commission, the Court established the importance of the legal effects of the measure rather than its formal designation.

More recently, the Court reiterated the objective nature of this assessment in its case law concerning the reviewability of institutional measures.

The inquiry is not simply whether the applicant dislikes the measure or considers it harmful. It is whether the measure has the legal character necessary to be challenged under Article 263.

A purely political declaration without binding consequences will not ordinarily qualify. A measure that imposes obligations, alters legal rights, or definitively determines the position of an institution may qualify even if its formal description is unusual.

4. Who May Bring an Action for Annulment?

Article 263 distinguishes between three categories of applicants:

1. Privileged applicants.
2. Semi-privileged applicants.
3. Non-privileged applicants.

The distinction is fundamental because each category is subject to different standing requirements.

4.1. Privileged Applicants

Article 263(2) identifies four privileged applicants:

• The Member States.
• The European Parliament.
• The Council of the European Union.
• The European Commission.

These applicants may bring actions for annulment without demonstrating that the contested measure directly or individually affects their own legal interests.

They are entitled to challenge EU acts in the general interest of ensuring the legality of Union action.

Their standing is therefore based on their constitutional position within the EU legal order rather than on personal or institutional injury caused by the contested act.

A Member State may challenge an EU regulation even if the measure does not directly impose a specific obligation upon that State. Similarly, the European Parliament may challenge an act adopted by another institution where it considers that the act violates the Treaties or undermines the institutional balance.

The privileged applicants play an important role in maintaining constitutional accountability within the Union.

4.2. Semi-Privileged Applicants

Article 263(3) identifies three semi-privileged applicants:

• The Court of Auditors.
• The European Central Bank.
• The Committee of the Regions.

These bodies may bring actions for annulment under the same legal grounds as privileged applicants, but only for the purpose of protecting their own prerogatives.

Their standing is therefore narrower.

For example, the European Central Bank may challenge an EU act where it considers that the measure unlawfully interferes with the responsibilities conferred upon it by the Treaties.

The Court of Auditors may bring proceedings where an act affects its institutional responsibilities in the field of financial oversight.

The Committee of the Regions may challenge an act where its prerogatives, including those relating to consultation in the legislative process, have been infringed.

The purpose of this category is to preserve institutional balance without granting every EU body an unrestricted right to challenge all institutional acts.

4.3. Non-Privileged Applicants: Individuals and Legal Persons

Article 263(4) governs actions brought by natural and legal persons.

This category includes:

• Individual citizens.
• Companies and other commercial entities.
• Non-governmental organisations.
• Professional associations.
• Trade unions.
• Other legally recognised organisations.

Unlike privileged applicants, these persons must satisfy specific standing requirements.

Article 263(4) establishes three alternative routes through which a natural or legal person may challenge an EU act:

1. The act is addressed to the applicant.
2. The act is of direct and individual concern to the applicant.
3. The act is a regulatory act of direct concern to the applicant and does not entail implementing measures.

These are alternative routes, not cumulative requirements applicable to every applicant.

The distinction is central to understanding the limits of private access to the EU courts.

5. Acts Addressed to the Applicant

The first route under Article 263(4) is the most straightforward.

A natural or legal person may challenge an act addressed directly to them.

For example, the European Commission may adopt a decision imposing a competition-law fine on a particular undertaking. Because the decision is addressed to that undertaking, the undertaking may challenge it before the EU courts.

Similarly, an EU institution may adopt an administrative decision rejecting an application, withdrawing a specific authorisation, or imposing an individual obligation upon an identifiable person.

The applicant does not need to satisfy the separate tests of direct and individual concern in the same manner as a person challenging an act addressed to someone else.

However, the applicant must still comply with the procedural requirements governing the action, including the applicable time limit and the need to challenge a reviewable act.

An act addressed to a company may also affect its legal representatives or shareholders economically, but this does not automatically give those persons standing in their own right. Each applicant must establish an independent legal basis for bringing proceedings.

6. Direct Concern and Individual Concern

The second route under Article 263(4) allows individuals and legal persons to challenge acts not addressed to them, provided that the acts are of both direct and individual concern to them.

The two conditions are cumulative.

An applicant who establishes direct concern but cannot establish individual concern will ordinarily fail to satisfy this route.

6.1. Direct Concern

Direct concern requires the contested act to affect the applicant’s legal situation directly.

The Court has traditionally identified two elements:

• The act must directly affect the applicant’s legal position.
• It must leave no discretion to those responsible for implementing it, where implementation is required, because the consequences must follow automatically from the EU measure.

The relevant inquiry is whether the legal effects upon the applicant arise directly from the EU act or depend on further discretionary decisions by another authority.

For example, a Commission decision addressed to a Member State may directly affect a company if it determines the legal position in a way that leaves the national authorities no genuine discretion concerning the implementation of the relevant obligation.

However, where national authorities retain discretion to determine whether and how the applicant will be affected, the requirement of direct concern may not be satisfied.

In Scuola Elementare Maria Montessori v Commission (Joined Cases C-622/16 P to C-624/16 P), the Court examined direct concern in the context of State aid measures and competitors of potential beneficiaries.

The judgment confirmed that a person must demonstrate sufficiently concrete effects on their legal situation. A merely theoretical or remote economic disadvantage is not necessarily sufficient.

Direct concern is therefore a legal test, not simply an assessment of whether the applicant has experienced an adverse commercial or practical consequence.

6.2. Individual Concern: The Plaumann Test

The requirement of individual concern has historically been one of the most restrictive features of private standing under EU law.

The leading authority is Plaumann v Commission (Case 25/62).

The case concerned a German importer of clementines who challenged a Commission decision refusing to authorise Germany to suspend certain customs duties.

The applicant argued that the decision adversely affected its commercial interests.

The Court rejected the action because the applicant was not individually concerned within the meaning of the Treaty.

The Court established that a person other than the addressee of an act may be individually concerned only where the act affects them by reason of attributes peculiar to them or circumstances differentiating them from all other persons, thereby distinguishing them individually in a manner comparable to the addressee.

This became known as the Plaumann test.

The essential difficulty is that membership of an open category of persons affected by a general measure is normally insufficient.

For example, a regulation affecting all importers of a particular product will not ordinarily make each importer individually concerned merely because the regulation has a commercial impact upon their activities.

The applicant must demonstrate circumstances that distinguish them from other persons in a sufficiently specific way.

Such circumstances may exist where the applicant possesses a particular legal status, has participated in a procedure in a manner recognised by the applicable rules, or belongs to a closed and identifiable category whose members are specifically affected by the measure.

However, the mere fact that an applicant was economically affected, held a licence, or was engaged in the relevant market before the adoption of the measure does not automatically establish individual concern.

The test remains an important limitation on private access to the EU courts.

6.3. Why the Plaumann Test Matters

The Plaumann test reflects a distinction between general judicial review and individual litigation.

Privileged applicants may challenge EU acts in the general interest of legality. Private applicants, by contrast, must establish the required connection between the contested act and their own legal situation.

This distinction has generated considerable debate concerning the balance between institutional accountability and effective judicial protection.

The restrictive interpretation of individual concern may prevent individuals from directly challenging certain measures of general application, even where those measures affect their economic or professional activities.

However, the Court has not replaced the Plaumann test with a general requirement that any person adversely affected by an EU act should be allowed to challenge it.

The test therefore continues to shape the admissibility of private actions, particularly those directed against legislative measures and acts of general application.

7. The Lisbon Treaty and the Introduction of the Regulatory Act Route

The Treaty of Lisbon amended the standing rules under Article 263(4) by introducing a third route for natural and legal persons.

Under this provision, an applicant may challenge a regulatory act where:

• The act is of direct concern to the applicant.
• The act does not entail implementing measures.

The applicant does not need to establish individual concern under the Plaumann test.

This reform was intended to improve access to judicial review for persons affected by certain acts of general application.

However, it did not eliminate the restrictive conditions governing private standing.

The scope of the new route was clarified by the Court in Inuit Tapiriit Kanatami and Others v Parliament and Council (Case C-583/11 P).

7.1. What Is a Regulatory Act?

In Inuit Tapiriit Kanatami, the Court held that the concept of a regulatory act under Article 263(4) refers to acts of general application that are not legislative acts.

The distinction is therefore between legislative acts and non-legislative regulatory acts.

A legislative act is adopted through a legislative procedure under Article 289 TFEU.

A non-legislative regulatory act may be adopted through delegated or implementing powers or through other non-legislative procedures, depending on the applicable legal basis.

This distinction is important because the third route under Article 263(4) does not apply to legislative acts.

A private applicant challenging a legislative act must therefore generally satisfy the direct and individual concern requirements unless the act is addressed to them.

7.2. Direct Concern Without Individual Concern

The principal advantage of the regulatory act route is that it removes the need to demonstrate individual concern.

A person may therefore challenge a non-legislative regulatory act of general application if it directly affects their legal situation and does not entail implementing measures.

For example, a directly applicable EU regulatory measure may impose obligations upon an identifiable category of operators without requiring any further national or EU implementing decision.

If the measure directly affects a particular undertaking and no implementing measures are required, the undertaking may be able to bring an action under the third route.

However, direct concern remains essential.

The Lisbon Treaty did not create a general right for any person economically or politically affected by an EU regulatory measure to challenge it.

7.3. Acts That Do Not Entail Implementing Measures

The second requirement is that the regulatory act must not entail implementing measures.

The purpose of this condition is closely connected to effective judicial protection.

Where a regulatory act requires implementing measures, the applicant may generally challenge those measures before the competent courts, subject to the applicable standing rules.

Where the regulatory act operates directly without requiring implementing measures, the third route may provide direct access to the EU courts.

The Court clarified the interpretation of this requirement in Telefónica v Commission (Case C-274/12 P).

It held that the assessment must consider the applicant’s position and the subject matter of the action. The question is not simply whether the act requires implementing measures for someone else, but whether it entails such measures in relation to the applicant and the challenge being brought.

This approach was further developed in Scuola Elementare Maria Montessori.

The Court explained that the concept of an act that does not entail implementing measures must be interpreted in light of the objective of avoiding situations in which individuals would have to break the law merely to obtain judicial review.

Where implementing measures are required, the applicant may challenge those measures and, where appropriate, raise the invalidity of the underlying EU act through the relevant judicial procedures.

The regulatory act route therefore seeks to balance direct access to the EU courts with the availability of judicial review through national proceedings.

8. Grounds for Annulment Under Article 263(2)

Article 263(2) identifies four principal grounds on which an action for annulment may be based.

These grounds apply to actions brought by privileged applicants and, subject to the standing requirements, to actions brought by natural and legal persons.

They provide the legal framework for examining whether an EU institution has acted lawfully.

8.1. Lack of Competence

The first ground is lack of competence.

EU institutions may act only within the powers conferred upon them by the Treaties.

This reflects the principle of conferral established by Article 5 TEU.

Under that principle, the Union acts only within the limits of the competences conferred upon it by the Member States in the Treaties. Competences not conferred upon the Union remain with the Member States.

An EU institution that adopts a measure without an appropriate legal basis, or exceeds the powers granted by the relevant Treaty provision, may therefore act unlawfully.

The issue may concern:

• The absence of an appropriate legal basis.
• The use of a legal basis that does not authorise the measure adopted.
• An institution exercising powers belonging to another institution.
• An institution exceeding the limits of delegated or implementing powers.
• A measure adopted outside the Union’s conferred competences.

For example, the Commission cannot use an implementing act to amend essential elements of a legislative act where the Treaties require that such changes be made through a legislative procedure or a delegated act under Article 290 TFEU.

Similarly, the Council cannot exercise powers reserved by the Treaties to another institution.

Lack of competence may therefore concern either the external limits of EU powers or the internal allocation of responsibilities between institutions.

8.2. Infringement of an Essential Procedural Requirement

The second ground concerns infringement of an essential procedural requirement.

EU institutions must follow the procedures established by the Treaties and applicable secondary legislation.

Procedural requirements protect institutional balance, transparency, democratic legitimacy, and the rights of persons affected by EU decisions.

Examples may include:

• Failure to obtain a mandatory consultation.
• Failure to comply with a required legislative procedure.
• Failure to obtain the consent of the European Parliament where required.
• Failure to provide an adequate statement of reasons.
• Serious procedural irregularities affecting the adoption of an act.
• Failure to respect procedural rights in an administrative investigation.

The importance of the procedural requirement is central.

Not every technical irregularity automatically results in annulment. The Court considers whether the requirement is essential and whether the infringement is legally significant in the context of the contested act.

The duty to state reasons is particularly important.

Article 296 TFEU requires legal acts to state the reasons on which they are based and to refer to proposals, initiatives, recommendations, requests, or opinions required by the Treaties.

A failure to provide sufficient reasons may therefore constitute a ground for annulment.

The purpose is not merely formal. Reasons enable affected persons to understand the legal and factual basis of a measure and allow the Court to exercise effective judicial review.

8.3. Infringement of the Treaties or Any Rule of Law Relating to Their Application

The third ground is broad and covers violations of the Treaties and other applicable rules of EU law.

It may include breaches of:

• The Treaty on European Union.
• The Treaty on the Functioning of the European Union.
• The Charter of Fundamental Rights of the European Union.
• General principles of EU law.
• Applicable regulations, directives, and other binding legal instruments.
• International agreements binding upon the European Union.
• Rules governing the exercise of institutional powers.

The Charter is particularly relevant because EU institutions must respect fundamental rights whenever they act within the scope of EU law.

An EU act may therefore be challenged if it violates rights such as equality, freedom of expression, respect for private life, property, effective judicial protection, or the rights of the defence.

The principle of proportionality is also an important ground of review.

Under Article 5(4) TEU, the content and form of Union action must not exceed what is necessary to achieve the objectives of the Treaties.

An EU measure may therefore be annulled where it imposes restrictions or obligations that are disproportionate to the legitimate objective pursued.

The principle of legal certainty and the protection of legitimate expectations may also be relevant, depending on the nature of the measure and the circumstances in which it was adopted.

8.4. Misuse of Powers

The fourth ground is misuse of powers.

It arises where an institution uses its legal authority for a purpose other than that for which the power was conferred.

The institution may possess formal competence to adopt the measure, and the procedure may have been correctly followed, but the power may nevertheless have been exercised for an improper purpose.

Misuse of powers is generally difficult to establish because it requires evidence that the institution pursued an objective different from the legally authorised one.

The Court examines the objective evidence, context, and circumstances surrounding the adoption of the measure.

A mere disagreement with the institution’s policy choices is insufficient.

The applicant must demonstrate that the relevant power was used for an improper purpose or that the measure was adopted through a procedure designed to achieve an objective different from the one for which that procedure was established.

This ground protects the integrity of the institutional system by ensuring that conferred powers are not used as instruments for unrelated or unauthorised purposes.

9. The Time Limit for Bringing an Action

Article 263(6) TFEU establishes a strict time limit for bringing an action for annulment.

Proceedings must be instituted within two months of:

• Publication of the measure.
• Notification of the measure to the applicant.
• The day on which the measure came to the applicant’s knowledge, where publication or notification does not apply.

The applicable starting point depends on the legal nature of the contested act and the circumstances in which it was communicated.

Where an act is published in the Official Journal of the European Union, the time limit ordinarily runs from publication.

Where a decision is addressed directly to a person, notification is generally relevant.

Where neither publication nor notification applies, the date on which the applicant acquired sufficient knowledge of the act may become decisive.

The two-month period is extended by the procedural time allowance provided for under the applicable Rules of Procedure.

The time limit is strict because legal certainty requires that the validity of EU measures should not remain indefinitely open to challenge.

After the expiry of the relevant period, an action for annulment may be declared inadmissible.

The Court does not ordinarily extend the time limit merely because an applicant was unaware of the legal consequences of the measure or delayed obtaining legal advice.

9.1. The Importance of Identifying the Correct Starting Date

Determining the correct starting date is essential.

A person challenging an EU decision addressed to them should not assume that the period begins when they first experience its practical consequences.

Similarly, where a measure has been published, the applicant cannot ordinarily rely on the fact that they personally became aware of it at a later date to postpone the commencement of the time limit.

The legal character of the act and the rules governing its publication or notification must be examined carefully.

9.2. Relationship with the TWD Principle

The strictness of the time limit is also reflected in the case law concerning the relationship between direct actions and preliminary references.

In TWD Textilwerke Deggendorf (Case C-188/92), the Court held that a person who clearly had standing to challenge a Commission decision directly under the applicable rules but allowed the time limit to expire could not later circumvent that finality by challenging the decision’s validity before a national court.

The principle is subject to the circumstances identified by the Court, particularly where the person’s right to bring a direct action was beyond doubt.

The judgment protects legal certainty and prevents the reopening of a measure through an alternative procedure after the applicant has allowed the direct-action time limit to expire.

It does not mean that every person who could potentially have challenged an EU act is automatically barred from raising validity questions before national courts. The precise conditions of the TWD principle must be satisfied.

10. Which EU Court Hears an Action for Annulment?

The Court of Justice of the European Union consists of the Court of Justice and the General Court.

Not every action for annulment is heard by the same judicial formation.

Under Article 256(1) TFEU, the General Court has jurisdiction at first instance over actions brought under Article 263, except for certain categories reserved to the Court of Justice by the Treaties and the Statute of the Court of Justice.

In broad terms, actions brought by private applicants and many actions concerning EU administrative decisions are heard initially by the General Court.

The Court of Justice retains jurisdiction over certain institutional and inter-institutional actions, including proceedings brought by Member States against acts of the European Parliament or the Council, subject to the Treaty provisions and exceptions established by the Statute.

It also hears certain actions brought by an EU institution against another institution.

The allocation of jurisdiction is determined by the Treaties and the Statute rather than by the applicant’s preference.

10.1. The General Court’s Role

The General Court is particularly important in disputes involving individuals and businesses.

It hears many cases concerning:

• Competition law and administrative fines.
• State aid.
• Trade and anti-dumping measures.
• EU staff disputes.
• Intellectual property rights administered through EU bodies.
• Regulatory decisions affecting businesses.
• Certain acts of EU agencies.

Its jurisdiction allows the Court to examine complex factual, technical, and economic issues at first instance.

10.2. Appeals to the Court of Justice

Decisions of the General Court may be appealed to the Court of Justice on points of law, under the conditions established by the Statute.

An appeal is not a general opportunity to repeat the entire factual examination.

The Court of Justice primarily examines whether the General Court correctly interpreted and applied EU law, respected procedural requirements, and gave adequate reasons for its judgment.

Where the appeal is well founded, the Court may set aside the General Court’s judgment and, where the procedural conditions permit, give final judgment itself or refer the case back to the General Court.

11. The Procedure Before the EU Courts

An action for annulment is brought by lodging an application with the appropriate registry.

The application must satisfy the formal and substantive requirements established by the Statute of the Court of Justice and the relevant Rules of Procedure.

It normally identifies:

• The applicant and its legal capacity.
• The EU institution, body, office, or agency responsible for the contested act.
• The act challenged.
• The applicant’s standing.
• The legal grounds relied upon.
• The relief sought.
• The relevant supporting arguments and evidence.

The application must identify the contested act with sufficient precision and explain why the applicant considers it unlawful.

The defendant institution is entitled to submit a defence.

Other Member States and EU institutions may, under the applicable rules, intervene in support of one of the parties or in support of a particular outcome.

The proceedings generally involve a written phase and may include an oral hearing.

The Court examines admissibility before determining the substance of the action.

This distinction is particularly important in private applications. An applicant may present strong arguments that an EU act violates the Treaties but still fail because they do not satisfy the standing requirements.

11.1. Admissibility and the Merits

Admissibility concerns whether the action may legally be examined by the Court.

The Court may consider:

• Whether the contested measure is reviewable.
• Whether the applicant has standing.
• Whether the action was brought within the prescribed time limit.
• Whether the application satisfies the procedural requirements.

The merits concern whether the contested act is actually unlawful.

An action may be admissible but unsuccessful because the applicant fails to establish any of the grounds for annulment.

Conversely, an applicant may identify a potentially serious legal defect but be unable to obtain a substantive judgment because the action is inadmissible.

The distinction reflects the difference between the right to bring proceedings and the legal justification for annulling the measure.

12. Interim Protection: Articles 278 and 279 TFEU

Bringing an action for annulment does not automatically suspend the operation of the contested EU act.

Article 278 TFEU establishes the general rule that actions before the Court of Justice do not have suspensory effect.

This means that the act normally remains legally effective while the proceedings are pending.

However, the Treaties provide mechanisms for interim judicial protection.

Under Article 278, the Court may order suspension of the operation of the contested act where the circumstances justify such relief.

Article 279 allows the Court to prescribe any necessary interim measures in cases before it.

These provisions are important where immediate implementation of an EU act could cause serious harm before the Court reaches a final decision.

12.1. Conditions for Interim Measures

Applications for interim relief are assessed according to established judicial criteria.

The applicant must generally demonstrate:

• A prima facie case, meaning that the principal action raises serious legal issues.
• Urgency, showing that interim relief is necessary to prevent serious and irreparable harm before final judgment.
• A balance of interests that justifies the requested measure.

The assessment is fact-sensitive.

The applicant must establish the existence of a genuine risk rather than rely on speculative or hypothetical consequences.

The Court also considers the public interest and the interests of the institution responsible for implementing the contested act.

Interim measures are exceptional because they temporarily alter the practical position before the legality of the contested measure has been finally determined.

They are therefore not granted merely because an action for annulment has been brought.

13. The Judgment: Article 264 TFEU

Article 264 TFEU establishes the principal consequences of a successful action for annulment.

Where the action is well founded, the Court declares the contested act void.

The annulment may concern the entire act or only part of it, provided that the unlawful elements can be separated from the remainder without changing the substance of the measure.

The judgment has an important legal effect: the annulled measure is deprived of its validity within the EU legal order, subject to any preservation of effects ordered by the Court.

13.1. Annulment in Whole or in Part

The Court does not necessarily have to annul an entire measure because one provision is unlawful.

Where the contested provision is severable, the Court may annul only the relevant part.

For example, a regulation may contain several independent provisions, and only one may violate the Treaties.

If removing that provision does not alter the essential substance of the remaining measure, partial annulment may be possible.

However, where the unlawful element is inseparable from the remainder, partial annulment may not be legally appropriate.

The Court must therefore consider the structure and purpose of the measure.

13.2. Preservation of Certain Effects

Article 264(2) permits the Court, where it considers this necessary, to state which effects of the annulled act are to be considered definitive.

This power is important for legal certainty and the protection of legitimate interests.

Immediate and complete removal of every effect may sometimes create serious legal or administrative difficulties.

For example, an EU measure may have governed a complex regulatory system, commercial arrangements, financial decisions, or administrative procedures involving numerous persons.

The Court may therefore preserve certain effects temporarily or definitively where the circumstances justify doing so.

This does not mean that the institution is free to continue applying an unlawful act indefinitely. It is a judicial power intended to manage the consequences of annulment in a legally controlled manner.

14. Article 266 TFEU: The Obligation to Comply with a Judgment

Article 266 TFEU requires the institution, body, office, or agency whose act has been declared void to take the necessary measures to comply with the judgment.

This obligation is essential because judicial review would be ineffective if institutions could simply disregard judgments annulling their acts.

The measures required depend on the nature of the annulment.

The responsible institution may need to:

• Adopt a new measure in compliance with the Court’s judgment.
• Reconsider an administrative application.
• Reopen or repeat a procedure.
• Correct an unlawful calculation or assessment.
• Restore a legal position affected by the annulled act.
• Adopt transitional arrangements where necessary.

The institution is generally required to comply with both the operative part of the judgment and the reasoning necessary to support it.

However, annulment does not necessarily mean that the institution must adopt the precise alternative preferred by the applicant.

The institution retains the discretion lawfully available under the Treaties, provided that its subsequent action respects the Court’s findings.

Failure to comply with a judgment may give rise to further legal proceedings, including an action for failure to act under Article 265 TFEU where the relevant conditions are satisfied.

15. Relationship Between Actions for Annulment and Other EU Remedies

The action for annulment is one component of a broader system of judicial protection.

Its effectiveness depends partly on its relationship with other procedures established by the Treaties.

15.1. Article 265: Actions for Failure to Act

Article 265 TFEU addresses unlawful institutional inaction.

While Article 263 allows an applicant to challenge an act adopted by an EU institution, Article 265 allows certain applicants to challenge a failure to act where the institution was under a legal obligation to take a position.

The two procedures are complementary.

Article 263 concerns unlawful action, while Article 265 concerns certain forms of unlawful inaction.

Both are subject to standing requirements and procedural conditions.

15.2. Article 267: Preliminary References

Article 267 establishes cooperation between national courts and the CJEU.

A national court may refer questions concerning the interpretation or validity of EU law to the Court of Justice.

This mechanism is particularly important where an EU measure is applied through national administrative or judicial proceedings.

An individual who cannot bring a direct action for annulment may, in appropriate circumstances, challenge national implementing measures before a national court and ask that court to refer a question concerning the validity of the underlying EU act.

However, under Foto-Frost v Hauptzollamt Lübeck-Ost (Case 314/85), national courts cannot themselves declare EU acts invalid. Where they consider a validity challenge well founded, they must refer the question to the Court of Justice.

The preliminary reference procedure therefore provides an indirect route for judicial examination of EU measures.

It does not completely replace the action for annulment, because the procedures have different requirements and operate in different judicial contexts.

15.3. Article 277: Plea of Illegality

Article 277 TFEU provides another important mechanism.

In proceedings involving an EU act of general application, a party may plead the inapplicability of that act on the grounds specified in Article 277, even after the period for bringing a direct action under Article 263 has expired.

This is known as the plea of illegality.

It does not produce the same result as a successful action for annulment.

Rather than declaring the contested general measure void for all purposes, the Court may find it inapplicable in the proceedings before it.

The mechanism prevents certain unlawful general measures from escaping judicial scrutiny merely because the direct-action time limit has expired.

However, Article 277 does not create an unrestricted alternative to Article 263. The applicant must satisfy the conditions governing the proceedings in which the plea is raised, including the necessary legal connection between the contested general act and the dispute.

16. The Limits of Judicial Review and Institutional Discretion

The action for annulment provides a mechanism for controlling the legality of EU institutional action, but it does not transform the Court into a general policy-making authority.

EU institutions often exercise discretion when implementing complex legal and technical responsibilities.

The intensity of judicial review depends on the nature of the power exercised and the legal issues raised.

Where the question concerns compliance with a clear procedural requirement or the correct interpretation of a Treaty provision, the Court may undertake a direct legal examination.

Where an institution has made complex economic, scientific, or technical assessments, the Court may recognise a broader margin of discretion.

However, discretion is not immunity from review.

The Court may still examine whether the institution relied on accurate information, respected procedural safeguards, considered relevant factors, avoided manifest errors of assessment, and acted consistently with the principle of proportionality.

This distinction is particularly significant in competition law, State aid, financial regulation, environmental policy, and public health measures.

The Court must ensure that the institution has exercised its powers lawfully without unnecessarily replacing legitimate institutional assessments with its own preferred policy choices.

Judicial review therefore operates as a control of legality rather than a general reconsideration of political or administrative wisdom.

17. Practical Examples of Actions for Annulment

The operation of Article 263 becomes clearer when considered through practical situations.

Example 1: A Competition Fine Imposed on a Company

The European Commission adopts a decision imposing a substantial fine on a company for an alleged infringement of EU competition law.

The company considers that the Commission misinterpreted the relevant legal provisions and failed to respect its rights of defence.

Because the decision is addressed to the company, it may bring an action for annulment before the General Court.

It may argue that the Commission exceeded its competence, infringed essential procedural requirements, misapplied EU competition law, or committed an error of assessment.

If the Court finds that the decision is unlawful, it may annul the decision or the relevant part of it.

Example 2: A General Regulatory Act Affecting an Undertaking

An EU agency adopts a non-legislative regulatory act imposing binding technical obligations on a defined category of operators.

A company is directly affected by the measure, and no further implementing measures are required in relation to it.

The company may seek to bring an action under the third route of Article 263(4), provided that the measure qualifies as a regulatory act and the other procedural requirements are satisfied.

The company does not need to establish individual concern under the Plaumann test, but it must still demonstrate direct concern.

Example 3: A Legislative Act Affecting a Professional Sector

The EU adopts a legislative regulation imposing new obligations on all businesses operating in a particular sector.

A company considers the regulation disproportionate and economically harmful.

However, the measure is legislative and applies to a broad category of operators.

The company cannot rely on the regulatory act route merely because it is directly affected and does not require implementing measures.

It must satisfy the direct and individual concern requirements, unless the act is addressed to it.

The fact that the regulation affects the company financially does not automatically establish individual concern.

Example 4: An EU Act Adopted Without a Required Consultation

The Treaties require the European Parliament or another institution to be consulted before a particular measure is adopted.

The responsible institution fails to conduct the required consultation.

A privileged applicant may challenge the act on the ground that an essential procedural requirement has been infringed.

If the Court establishes that the consultation was legally required and its omission invalidates the procedure, it may annul the measure.

Example 5: A Measure That Exceeds Delegated Powers

The legislature authorises the Commission to supplement certain non-essential elements of a legislative act through delegated acts.

The Commission subsequently adopts a measure that changes an essential element of the basic legislation.

A Member State, institution, or eligible private applicant may challenge the measure under Article 263, relying on lack of competence or infringement of the Treaties.

The Court would examine the scope of the delegation and determine whether the Commission exceeded the powers conferred upon it.

18. Key Takeaways

• Article 263 TFEU establishes the principal mechanism for judicial review of the legality of EU institutional acts.
• Reviewable acts include legislative acts and other binding measures intended to produce legal effects vis-à-vis third parties.
• Recommendations and opinions are generally excluded, although the legal substance of a measure is more important than its formal title.
• Privileged applicants are the Member States, European Parliament, Council, and Commission.
• Semi-privileged applicants are the Court of Auditors, European Central Bank, and Committee of the Regions, acting to protect their prerogatives.
• Natural and legal persons may bring actions where the act is addressed to them, is of direct and individual concern to them, or is a regulatory act of direct concern that does not entail implementing measures.
• The Plaumann test remains the leading authority on individual concern.
• Under Inuit Tapiriit Kanatami, regulatory acts for the third route under Article 263(4) are non-legislative acts of general application.
• The four grounds for annulment are lack of competence, infringement of an essential procedural requirement, infringement of the Treaties or another applicable rule of law, and misuse of powers.
• The ordinary time limit for bringing an action is two months, calculated according to the rules on publication, notification, or knowledge.
• The General Court hears many actions at first instance, while certain institutional and inter-institutional actions fall within the jurisdiction of the Court of Justice.
• An action for annulment does not automatically suspend the contested act. Interim relief may be sought under Articles 278 and 279 TFEU.
• Under Article 264, the Court may declare an unlawful act void in whole or in part and may preserve certain effects.
• Article 266 requires the institution responsible for the annulled act to take the necessary measures to comply with the judgment.
• Articles 265, 267, and 277 provide complementary mechanisms for addressing institutional inaction, questions of validity, and the inapplicability of general EU measures.

19. Frequently Asked Questions

1. What is an action for annulment under EU law?

An action for annulment is a judicial procedure under Article 263 TFEU through which eligible applicants challenge the legality of acts adopted by EU institutions, bodies, offices, or agencies. If the action is successful, the Court may declare the contested act void.

2. Which EU institutions can be challenged under Article 263?

The Court may review legislative acts and qualifying acts of the Council, Commission, European Central Bank, European Parliament, European Council, and EU bodies, offices, and agencies. The act must fall within the categories established by Article 263 and satisfy the relevant requirements concerning legal effects.

3. Can individuals bring an action for annulment?

Yes. Natural and legal persons may bring actions where the contested act is addressed to them, is of direct and individual concern to them, or is a regulatory act of direct concern that does not entail implementing measures.

4. What is the Plaumann test?

The Plaumann test is the judicial standard used to determine individual concern. A person who is not the addressee of an act must demonstrate that the act affects them because of attributes peculiar to them or circumstances differentiating them from all other persons, thereby distinguishing them individually.

5. What is a regulatory act under Article 263(4)?

According to Inuit Tapiriit Kanatami, a regulatory act is an act of general application that is not a legislative act. A person directly concerned by such an act may challenge it without proving individual concern, provided that it does not entail implementing measures.

6. What are the four grounds for annulment?

The four grounds are lack of competence, infringement of an essential procedural requirement, infringement of the Treaties or another applicable rule of law, and misuse of powers.

7. What is the time limit for bringing an action?

The ordinary time limit is two months from publication of the measure, notification to the applicant, or, where neither applies, the date on which the measure came to the applicant’s knowledge. The applicable procedural rules govern the calculation and any permitted extension.

8. Does bringing an action automatically suspend the contested EU act?

No. Under Article 278 TFEU, an action for annulment does not ordinarily suspend the operation of the contested act. The applicant may request interim relief under Articles 278 and 279, but the Court must be satisfied that the relevant conditions are met.

9. What happens when the Court annuls an EU act?

Under Article 264, the act is declared void, either in whole or in part. The Court may preserve certain effects of the annulled act where necessary. Under Article 266, the responsible institution must take the measures necessary to comply with the judgment.

10. Which court hears actions for annulment?

The General Court hears many actions at first instance, particularly those brought by individuals and businesses. Certain institutional and inter-institutional actions fall within the jurisdiction of the Court of Justice, subject to the Treaties and the Statute.

11. Can an EU act be challenged after the two-month period has expired?

A direct action under Article 263 will ordinarily be inadmissible after the applicable time limit. However, Article 277 permits a plea of illegality against certain acts of general application in proceedings where the relevant conditions are satisfied. National proceedings and preliminary references under Article 267 may also provide a route for examining validity, subject to the case law on legal certainty, including TWD.

12. What is the difference between an action for annulment and an action for failure to act?

An action for annulment under Article 263 challenges an act adopted by an EU institution or body. An action for failure to act under Article 265 concerns an unlawful failure by an institution or body to take a position where it was legally required to do so.

20. Conclusion

The action for annulment under Article 263 TFEU is one of the principal instruments through which the European Union subjects institutional authority to judicial control.

It ensures that EU institutions, bodies, offices, and agencies exercise their powers within the limits established by the Treaties and the wider legal order. It also provides a mechanism through which eligible individuals and organisations may challenge measures that unlawfully affect their legal position.

The system combines broad access for institutional applicants with more restrictive standing requirements for private persons. The distinction between privileged, semi-privileged, and non-privileged applicants reflects the constitutional structure of the Union, while the Plaumann test and the Lisbon Treaty regulatory act route define the conditions under which individuals may obtain direct judicial review.

The grounds for annulment ensure that judicial scrutiny extends beyond formal competence. They also protect essential procedures, fundamental rights, the principles governing the application of EU law, and the proper purpose for which institutional powers are conferred.

Articles 264 and 266 complete this framework by defining the consequences of annulment and requiring institutions to comply with the Court’s judgment. Articles 267 and 277 provide additional mechanisms through which the validity of EU measures may be examined in appropriate circumstances.

The deeper constitutional importance of the action for annulment lies in the principle that no EU institution stands above the law. Institutional authority is legitimate only when exercised within the legal framework established by the Treaties, and the Court of Justice remains the central judicial authority responsible for protecting that principle.

21. Primary Legal Sources and Further Reading

Treaty Provisions

• Article 5 TEU – Principle of conferral and subsidiarity
• Article 263 TFEU – Actions for annulment
• Article 264 TFEU – Effects of annulment
• Article 265 TFEU – Actions for failure to act
• Article 266 TFEU – Compliance with judgments
• Article 267 TFEU – Preliminary references
• Article 277 TFEU – Plea of illegality
• Articles 278 and 279 TFEU – Interim judicial protection
• Article 289 TFEU – Legislative acts and legislative procedures
• Article 296 TFEU – Duty to state reasons

Leading Court of Justice Decisions

• Plaumann v Commission, Case 25/62 – The foundational judgment on individual concern and private standing.
• IBM v Commission, Case 60/81 – Distinction between reviewable acts and intermediate procedural measures.
• TWD Textilwerke Deggendorf, Case C-188/92 – Legal certainty and the consequences of failing to challenge an EU decision within the prescribed time limit.
• Foto-Frost v Hauptzollamt Lübeck-Ost, Case 314/85 – National courts cannot declare EU acts invalid.
• Inuit Tapiriit Kanatami and Others v Parliament and Council, Case C-583/11 P – Interpretation of the concept of regulatory acts under Article 263(4).
• Telefónica v Commission, Case C-274/12 P – Direct concern and the requirement that a regulatory act must not entail implementing measures.
• Scuola Elementare Maria Montessori v Commission, Joined Cases C-622/16 P to C-624/16 P – Direct concern and the interpretation of regulatory acts not entailing implementing measures.
• Commission v Council, Case C-45/86 – Institutional standing and the protection of legality under the Treaty framework.

Institutional Resources

• EUR-Lex – Annulment of Legal Acts by the Court of Justice – Overview of Articles 263, 264, and 266 TFEU.
• Court of Justice of the European Union – The Court and the General Court – Institutional structure and judicial responsibilities.
• CURIA – Procedural Texts – Statute of the Court of Justice and the applicable Rules of Procedure.
• European Parliament – Competences of the Court of Justice of the European Union – Overview of the Court’s jurisdiction and judicial review.