Glossary
Appeal
A challenge to a decision, heard by a higher or different court, normally on the basis of legal error or procedural unfairness.
Why the concept exists
First-instance decisions are made once, at speed, by people who can be wrong. Appeal is the mechanism that admits this: it exists so that an error of law or a procedural unfairness can be corrected without requiring the whole case to be tried again, and it is the primary corrective in every system that has one.
Where it operates
Most appellate courts review rather than re-decide. They ask whether the law was applied correctly and whether the process was fair, and they generally defer to the first-instance findings of fact — which is why "the appeal court disagreed with the verdict" is usually the wrong way to describe what happened. Access is frequently filtered: many systems require permission to appeal, and the highest court commonly takes cases for their legal significance rather than to correct individual outcomes.
How far it travels
Some systems provide a full rehearing at the first appellate level; most review for error rather than re-deciding the facts. How many tiers exist, and whether reaching the highest court is a right or requires permission, differ substantially.
Commonly confused with
- Judicial review
- Retrial
Worked examples
Systems this platform has researched. Each example shows how one country actually arranges this — including where it departs from the general pattern.
- Canada
- The Supreme Court Act establishes a general court of appeal for Canada sitting at the apex of both the provincial and federal court systems — an unusual arrangement in which one court is final for every kind of law in a federation.
- Japan
- Japan vests the whole judicial power in a Supreme Court and inferior courts established by law, with no extraordinary tribunal permitted, so the appellate route is a single hierarchy rather than parallel systems.
Where this connects
Roles: Judge.
Sources
United Nations · International organisation · 1966 · link verified 2026-07-23
Authentic treaty text as registered in the UN Treaty Series; registered ex officio 23 March 1976. Supports the fair-trial guarantees of Article 14, including the right to a competent, independent and impartial tribunal established by law, and the presumption of innocence (Art. 14(2)). Binding only on states party to it; does not support claims about states that have not ratified, nor about how any individual state applies it. WAVE 19 ADDITION, read from the same authentic treaty text in the UN Treaty Series PDF, text-extracted locally. Supports Article 14(5) in full: "Everyone convicted of a crime shall have the right to his conviction and sentence being reviewed by a higher tribunal according to law." The qualifier "according to law" is part of the provision and is load-bearing: the right is to review as the law of the state provides, not to appeal without limit or by any chosen route. Supports Article 14(6): where a person has by a FINAL decision been convicted of a criminal offence and the conviction has subsequently been reversed or the person pardoned on the ground that a new or newly discovered fact shows conclusively that there has been a miscarriage of justice, the person who has suffered punishment as a result shall be compensated according to law, unless it is proved that the non-disclosure of the unknown fact in time is wholly or partly attributable to that person. Supports Article 14(3)(g), that no one shall be compelled to testify against himself or to confess guilt, and Article 14(4), that the procedure for juvenile persons shall take account of their age and the desirability of promoting their rehabilitation. WAVE 20 ADDITION. PROVENANCE, stated precisely because this record's url is a different copy: the Article 4 material below was read on 2026-08-26 from OHCHR's official PDF of the Covenant at https://www.ohchr.org/sites/default/files/ccpr.pdf. The United Nations Treaty Series copy at this record's url timed out repeatedly this session and was not re-read, so nothing in this addition rests on it. Article 4 is the derogation clause, and its four cumulative conditions are the point. Supports ICCPR Art. 4(1): “1. In time of public emergency which threatens the life of the nation and the existence of which is officially proclaimed, the States Parties to the present Covenant may take measures derogating from their obligations under the present Covenant to the extent strictly required by the exigencies of the situation, provided that such measures are not inconsistent with their other obligations under international law and do not involve discrimination solely on the ground of race, colour, sex, language, religion or social origin.”. Supports ICCPR Art. 4(2), read with Arts. 6, 7, 8, 11, 15, 16 and 18 as printed in the same document: “2. No derogation from articles 6, 7, 8 (paragraphs 1 and 2), 11, 15, 16 and 18 may be made under this provision.”. Supports ICCPR Art. 4(3): “3. Any State Party to the present Covenant availing itself of the right of derogation shall immediately inform the other States Parties to the present Covenant, through the intermediary of the Secretary-General of the United Nations, of the provisions from which it has derogated and of the reasons by which it was actuated. A further communication shall be made, through the same intermediary, on the date on which it terminates such derogation.”. The Covenant binds States Parties to it. It is NOT evidence of any particular state's domestic law, and no country claim on this platform rests on it. It designates no organ to proclaim an emergency, assigns no role to any national legislature, and creates no civil-protection institution. The Human Rights Committee's interpretation of this article is cited separately and attributed to the Committee.WAVE 21 ADDITION. Read from the same United Nations Treaty Series PDF, text-extracted and searched. Supports Art. 9(1)-(4), and specifically that the Covenant polices ARBITRARINESS rather than closing a list of grounds: “Everyone has the right to liberty and security of person. No one shall be subjected to arbitrary arrest or detention. No one shall be deprived of his liberty except on such grounds and in accordance with such procedure as are established by law”; with 9(2) (informed at the time of arrest of the reasons and promptly of any charges), 9(3) (brought promptly before a judge or other officer authorised by law to exercise judicial power; it shall not be the general rule that persons awaiting trial shall be detained in custody) and 9(4) (entitlement to take proceedings before a court which decides without delay on the lawfulness of the detention). Supports Art. 14(1): “All persons shall be equal before the courts and tribunals”, with the right to a fair and public hearing by a competent, independent and impartial tribunal established by law, the closed grounds on which press and public may be excluded, and the rule that judgment shall be made public except where the interest of juvenile persons otherwise requires or the proceedings concern matrimonial disputes or the guardianship of children. Supports Art. 14(3)(e) (“To examine, or have examined, the witnesses against him and to obtain the attendance and examination of witnesses on his behalf under the same conditions as witnesses against him”), 14(3)(f) (free assistance of an interpreter) and 14(3)(g) (“Not to be compelled to testify against himself or to confess guilt” — note that the Covenant adds the confession limb, which the European Convention text does not contain). Supports Art. 14(5). VERIFIED NEGATIVES from exhaustive search of the Covenant text: “proportion” occurs zero times, “equality of arms” zero times, and “remain silent” zero times. This is treaty text binding states party to it; it is not evidence of any state's domestic law, and the corpus invariant forbidding a treaty from standing in for a country applies to it.
Supreme Court Act (RSC 1985, c. S-26)
Government of Canada — Justice Laws Website (laws-lois.justice.gc.ca) · Legislation · link verified 2026-07-26
The statute constituting the Supreme Court of Canada (English; French equally authoritative), read for the relevant sections. Supports s.4(1): 'The Court shall consist of a chief justice to be called the Chief Justice of Canada, and eight puisne judges' (nine judges); and s.6, that at least three judges must be appointed from Quebec. Both versions have legal effect.
Judicial System in Japan / The Judicial System and Courts in Japan
Supreme Court of Japan (courts.go.jp) · Government publication · link verified 2026-07-25
The Supreme Court's own English account of the court system, obtained by search retrieval of the official page (courts.go.jp truncates automated fetches). Supports: the courts established under the Court Act (1947) — Supreme Court, high courts, district courts, family courts and summary courts; that the Supreme Court is the highest court and exercises judicial review only in a concrete case, not in the abstract; that family courts also handle juvenile cases; and the Saiban-in (lay judge) system — begun 21 May 2009, in which randomly selected lay judges sit WITH professional judges in the district court for certain serious criminal cases only (offences punishable by death or life imprisonment, or intentional criminal acts causing death), described as having points in common with a jury system. Supports court structure and the lay-judge scope; not caseload figures. As the Supreme Court's own institutional description its facts are stated as such; it is not a statute.