# 民法 / Civil Code — 第二十条 (Article 20) - Law: 民法 (Civil Code), 明治二十九年法律第八十九号 - English title "Civil Code": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第二十条 (Article 20)（制限行為能力者の相手方の催告権） — address `art-20` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/art-20 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-20 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第二十条（制限行為能力者の相手方の催告権） — (Right to Demand of the Other Party to Dealings Involving a Person with Qualified Legal Capacity) caption: Ministry of Justice translation — Japanese Law Translation Database System art-20 · https://japanlaw.org/en/civil-code/art-20 · https://japanlaw.org/l/129AC0000000089/art-20 **第一項** 制限行為能力者の相手方は、その制限行為能力者が行為能力者（行為能力の制限を受けない者をいう。以下同じ。）となった後、その者に対し、一箇月以上の期間を定めて、その期間内にその取り消すことができる行為を追認するかどうかを確答すべき旨の催告をすることができる。この場合において、その者がその期間内に確答を発しないときは、その行為を追認したものとみなす。 art-20/par-1 · https://japanlaw.org/en/civil-code/art-20/par-1 · https://japanlaw.org/l/129AC0000000089/art-20/par-1 After a person with qualified legal capacity who is involved in dealings with another party becomes a person with the legal capacity to act (meaning a person whose legal capacity to act is not subject to restrictions; the same applies below), the other party to those dealings may fix a period of one month or longer and demand that the person give a definite answer within that period of time as to whether the person will ratify an act that the person may revoke. In such a case, if the person fails to send a definite answer within that period of time, the person is deemed to have ratified that act. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 制限行為能力者の相手方が、制限行為能力者が行為能力者とならない間に、その法定代理人、保佐人又は補助人に対し、その権限内の行為について前項に規定する催告をした場合において、これらの者が同項の期間内に確答を発しないときも、同項後段と同様とする。 art-20/par-2 · https://japanlaw.org/en/civil-code/art-20/par-2 · https://japanlaw.org/l/129AC0000000089/art-20/par-2 The second sentence of the preceding paragraph also applies if, before the person with qualified legal capacity becomes a person with the legal capacity to act, the other party to dealings involving the person with qualified legal capacity lodges the demand prescribed in the preceding paragraph with the legal representative, curator, or assistant of that person with respect to an act within the scope of their authority, and they fail to send a definite answer within the fixed period of time referred to in that paragraph. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 特別の方式を要する行為については、前二項の期間内にその方式を具備した旨の通知を発しないときは、その行為を取り消したものとみなす。 art-20/par-3 · https://japanlaw.org/en/civil-code/art-20/par-3 · https://japanlaw.org/l/129AC0000000089/art-20/par-3 If a person does not send notice within the period of time stated in the preceding two paragraphs indicating that the person has completed any special formalities that an act requires, the person is deemed to have revoked that act. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 制限行為能力者の相手方は、被保佐人又は第十七条第一項の審判を受けた被補助人に対しては、第一項の期間内にその保佐人又は補助人の追認を得るべき旨の催告をすることができる。この場合において、その被保佐人又は被補助人がその期間内にその追認を得た旨の通知を発しないときは、その行為を取り消したものとみなす。 art-20/par-4 · https://japanlaw.org/en/civil-code/art-20/par-4 · https://japanlaw.org/l/129AC0000000089/art-20/par-4 The other party to dealings involving a person with qualified legal capacity may lodge a demand with a person under curatorship or with a person under assistantship who is subject to a decision referred to in Article 17, paragraph (1) to demand that the person get the curator or assistant to ratify an act within the fixed period referred to in paragraph (1). In such a case, if the person under curatorship or person under assistantship does not send notice within that period indicating that the person has gotten the curator or assistant to ratify the act in question, the person is deemed to have revoked that act. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-20/par-2: 前項 → 民法 第二十条第一項 (Article 20, paragraph (1)), art-20/par-1 — https://japanlaw.org/en/civil-code/art-20/par-1 · https://japanlaw.org/l/129AC0000000089/art-20/par-1 - art-20/par-3: 前二項 → 民法 第二十条第一項 (Article 20, paragraph (1)), art-20/par-1 — https://japanlaw.org/en/civil-code/art-20/par-1 · https://japanlaw.org/l/129AC0000000089/art-20/par-1 - art-20/par-3: 前二項 → 民法 第二十条第二項 (Article 20, paragraph (2)), art-20/par-2 — https://japanlaw.org/en/civil-code/art-20/par-2 · https://japanlaw.org/l/129AC0000000089/art-20/par-2 - art-20/par-4: 第十七条第一項 → 民法 第十七条第一項 (Article 17, paragraph (1)), art-17/par-1 — https://japanlaw.org/en/civil-code/art-17/par-1 · https://japanlaw.org/l/129AC0000000089/art-17/par-1 - art-20/par-4: 第一項 → 民法 第二十条第一項 (Article 20, paragraph (1)), art-20/par-1 — https://japanlaw.org/en/civil-code/art-20/par-1 · https://japanlaw.org/l/129AC0000000089/art-20/par-1 ## Cited by 6 provisions cite this one. No official source publishes this direction. - 民法 第二十条第二項（制限行為能力者の相手方の催告権） — https://japanlaw.org/en/civil-code/art-20/par-2 · https://japanlaw.org/l/129AC0000000089/art-20/par-2 - 民法 第二十条第三項（制限行為能力者の相手方の催告権） — https://japanlaw.org/en/civil-code/art-20/par-3 · https://japanlaw.org/l/129AC0000000089/art-20/par-3 - 民法 第二十条第四項（制限行為能力者の相手方の催告権） — https://japanlaw.org/en/civil-code/art-20/par-4 · https://japanlaw.org/l/129AC0000000089/art-20/par-4 - 民法 第八百六十五条第一項 — https://japanlaw.org/en/civil-code/art-865/par-1 · https://japanlaw.org/l/129AC0000000089/art-865/par-1 - 民法 第八百六十六条第一項（被後見人の財産等の譲受けの取消し） — https://japanlaw.org/en/civil-code/art-866/par-1 · https://japanlaw.org/l/129AC0000000089/art-866/par-1 - 民法 第八百七十二条第二項（未成年被後見人と未成年後見人等との間の契約等の取消し） — https://japanlaw.org/en/civil-code/art-872/par-2 · https://japanlaw.org/l/129AC0000000089/art-872/par-2 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 民法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/129AC0000000089/20260624_508AC0000000045), retrieved 2026-10-11 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Civil Code — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4848/tb), retrieved 2026-10-11 - This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11