The Administrative Case Litigation Act governs administrative case litigation unless another law contains special provisions. It is consulted when a reader needs to distinguish an action for the judicial review of an administrative disposition from a public law-related action, citizen action, or interagency action, or when a disposition notice must state litigation-related information. This article explains the Act's main litigation categories and selected procedural mechanisms, but it does not address court strategy, evidence evaluation, or the likely result of any individual lawsuit.

Four Categories of Administrative Case Litigation

Articles 1 to 7 define the Act's starting vocabulary. The definitions matter because later provisions attach different procedural rules to different types of action.

Article 1 provides that administrative case litigation is governed by this Act except where another law provides otherwise. Article 2 then divides administrative case litigation into four categories: actions for the judicial review of administrative dispositions, public law-related actions, citizen actions, and interagency actions. Article 7 adds that matters not provided for in this Act follow the example of civil litigation, so the Act does not operate as a complete procedural code for every litigation detail.

Article 3 is the central definition for actions for the judicial review of administrative dispositions. It first defines that category as an action to appeal against the exercise of public authority by an administrative authority. It then identifies specific subtypes: an action for the revocation of the original administrative disposition, an action for the revocation of an administrative determination, an action for the declaration of nullity, etc., an action for the declaration of illegality of inaction, a mandamus action, and an action for an injunctive order. These definitions also show how the Act connects litigation to administrative review: Article 3(3) defines an action for the revocation of an administrative determination as one directed at an administrative determination, decision, or other act made in response to a request for administrative review.

Articles 4, 5, and 6 define the other three categories. Article 4 covers public law-related actions, including actions concerning public-law legal relationships. Article 5 defines citizen actions as actions seeking correction of unlawful acts by organs of the State or public entities, filed based on a status that does not depend on the plaintiff's own legal interest. Article 6 defines interagency actions as disputes between organs of the State or public entities about the existence or exercise of authority.

Revocation Actions: Review Requests, Standing, and Timing

The revocation-action section is the largest part of the Act. It supplies rules for filing an action against an original administrative disposition or an administrative determination, including whether administrative review must come first, who may sue, who stands as defendant, which court has jurisdiction, and when the filing period expires.

Article 8 states that an action for revocation of the original administrative disposition is not prevented merely because a request for administrative review may be made for that disposition. The proviso recognizes an exception where a law requires an administrative determination on the review request before the revocation action may be filed. Even in that exception, Article 8(2) allows filing without waiting for the determination where three months have passed after the review request, where urgent necessity exists to avoid serious damage caused by the disposition, its execution, or continuation of procedures, or where another legitimate reason exists. Article 8(3) allows the court to suspend litigation proceedings while the administrative review is pending within the statutory period.

Article 9 governs standing to sue in revocation actions. It limits an action for revocation of an original administrative disposition or administrative determination to a person who has legal interest in seeking revocation, including a person who still has legal interest to be restored by revocation after the effect of the disposition or determination has ended. Article 9(2) instructs the court, when judging legal interest of a person other than the addressee, not to rely only on the wording of the statute that supports the disposition, but also to consider the purpose of that statute, related statutes with a common purpose, and the nature and manner of harm to the relevant interests.

Articles 10 to 15 set several filing boundaries. Article 10 restricts revocation grounds by excluding illegality unrelated to the plaintiff's own legal interest, and it prevents using an action against an administrative determination merely to attack the illegality of the original disposition where both actions are available. Article 11 identifies who must stand as defendant; where the administrative authority belongs to the State or a public entity, the defendant is generally that State or public entity, not the individual authority itself. Article 12 states jurisdiction rules, and Article 14 sets filing periods based on knowledge of the disposition or determination and on the date of the disposition or determination, with special treatment where a request for administrative review has been made. Article 15 allows correction of a wrong defendant where the mistake was not caused intentionally or by gross negligence.

Stay of Execution and Judgment Effects

The Act treats filing a revocation action and stopping the effect of the challenged disposition as separate matters. Article 25 is the key provision on stay of execution.

Article 25(1) states that filing an action for revocation of the original administrative disposition does not prevent the effect of the disposition, execution of the disposition, or continuation of procedures. Article 25(2) allows the court, upon petition, to order a stay of all or part of the disposition's effect, execution, or procedural continuation when urgent necessity exists to avoid serious damage caused by the disposition, execution, or continued procedure. The same paragraph also limits suspension of the disposition's effect where the purpose can be achieved by suspending execution or procedure. Article 25(3) directs the court to consider the difficulty of recovering from damage and the nature and extent of the damage, as well as the content and nature of the disposition. Article 25(4) excludes a stay where it is likely to seriously affect public welfare or where the action on the merits appears groundless.

Articles 26 to 29 complete the stay framework. Article 26 allows revocation of a stay of execution when the reason for the stay disappears or circumstances change. Article 27 allows the Prime Minister to state an objection to a stay petition or to an already issued stay, with reasons showing circumstances likely to have a serious effect on public welfare; Article 27(6) states that the Prime Minister must not state such an objection unless unavoidable and must report it to the next Diet session. Article 28 places jurisdiction over stay petitions in the court where the merits case is pending. Article 29 applies the stay provisions mutatis mutandis to actions for revocation of administrative determinations.

Articles 30 to 35 concern later judgment-related effects. Article 30 allows revocation of a discretionary disposition only where the disposition goes beyond the bounds of discretionary power or constitutes an abuse of that power. Article 31 allows dismissal of a claim by reason of special circumstances where a disposition or determination is illegal but revocation would cause serious harm to public interest and revocation is found inconsistent with public welfare; in that case, the judgment text must declare the illegality. Article 32 states that a judgment revoking a disposition or determination is effective against third parties, and Article 33 states binding effects for administrative agencies.

Nullity, Inaction, Mandamus, and Injunctive Orders

The Act separately regulates actions for judicial review that are not ordinary revocation actions. Articles 36, 37, 37-2, 37-3, 37-4, 37-5, and 38 are the core provisions for this group.

Article 36 provides standing for an action for the declaration of nullity, etc. of an original administrative disposition or administrative determination. The action may be filed only by a person likely to suffer damage from the disposition or a subsequent disposition, or another person with legal interest in seeking the declaration, where that person cannot achieve the purpose through an action concerning the existing legal relationship based on the existence, non-existence, validity, or invalidity of the disposition or determination. Article 37 is narrower: an action for the declaration of illegality of inaction may be filed only by a person who has filed an application for an original administrative disposition or administrative determination.

Articles 37-2 and 37-3 divide mandamus actions by the situation described in Article 3(6). Article 37-2 addresses cases where an administrative authority has not made a certain original administrative disposition that it should make and no application-type route under Article 3(6)(ii) is being used. It requires likely serious damage if the disposition is not made, absence of other appropriate means to avoid the damage, and legal interest in seeking the order. Article 37-3 addresses cases tied to an application or request for administrative review. It requires, depending on the case, either no disposition or determination within a reasonable period or a dismissal with or without prejudice that should be revoked, is invalid, or has never existed; it also requires joinder with the specified inaction, revocation, or nullity action.

Article 37-4 provides requirements for an action for an injunctive order. The action may be filed only where serious damage is likely if a certain original administrative disposition or administrative determination is made, unless another appropriate means exists to avoid that damage, and only by a person with legal interest in seeking an order that the administrative authority not make the disposition or determination. Article 37-5 provides provisional orders of mandamus and provisional injunctive orders, each requiring urgent necessity to avoid uncompensable damage and a merits action that appears well-grounded, while excluding provisional orders likely to seriously affect public welfare. Article 38 applies selected revocation-action provisions mutatis mutandis to these other actions for judicial review.

The later chapters explain litigation categories that are not ordinary actions for judicial review of administrative dispositions. Their provisions are short, but each narrows how the earlier rules travel into a different type of action.

Article 39 requires the court to notify the administrative authority that made an original administrative disposition or administrative determination when a public law-related action is filed concerning a disposition or determination that confirms or creates a legal relationship between parties and where one party to that relationship stands as defendant under laws and regulations. Article 40 addresses public law-related actions subject to a statutory filing period. If reasonable grounds exist for failing to meet that filing period, the action may be filed after the period expires unless the relevant law provides otherwise, and Article 15's wrong-defendant correction rule applies mutatis mutandis. Article 41 applies selected rules on intervention, examination of evidence, judgment effects, related-claim transfer, and joinder to public law-related actions.

Article 42 makes citizen actions and interagency actions dependent on Acts: they may be filed only by persons specified by Acts and only in cases provided for in Acts. This is the key textual difference from the definitions in Articles 5 and 6. Those earlier provisions define the categories, while Article 42 controls when filing is possible. Article 43 then applies different procedural provisions depending on the type of citizen or interagency action. If the action seeks revocation of a disposition or determination, most revocation-action provisions apply mutatis mutandis, excluding Article 9 and Article 10(1). If it seeks a declaration of nullity, the nullity-action provisions apply except Article 36. Other citizen or interagency actions borrow public law-related action rules except the listed exclusions.

Provisional Disposition, Private-Law Issues, and Instructions

Chapter V contains auxiliary provisions that often matter at the boundary between administrative litigation and other civil proceedings. Articles 44, 45, and 46 each address a different boundary problem.

Article 44 excludes provisional dispositions under the Civil Provisional Remedies Act with regard to an original administrative disposition or other act constituting the exercise of public authority by an administrative authority. This provision is separate from Article 25 stay of execution and Article 37-5 provisional mandamus or injunctive orders. The Act therefore channels provisional relief concerning administrative authority through its own mechanisms rather than through civil provisional disposition.

Article 45 addresses a private-law action where the existence, non-existence, validity, or invalidity of an original administrative disposition or administrative determination becomes the point at issue. In that situation, provisions on administrative-authority intervention and court notice apply mutatis mutandis. If an administrative authority intervenes, its allegations and evidence are limited to the existence, non-existence, validity, or invalidity of the disposition or determination, and the court may revoke the intervention order when that issue is no longer disputed.

Article 46 creates written instruction duties for administrative authorities. When making a disposition or determination against which a revocation action may be filed, the authority must inform the addressee in writing of the person who is to stand as defendant, the filing period, and any rule requiring an administrative determination on a request for administrative review before filing a revocation action, unless the disposition is made orally. Article 46 also covers cases where a law allows a revocation action only against the administrative determination responding to a review request, and cases involving public law-related actions concerning a disposition or determination that confirms or creates a legal relationship between parties.