Article 919Revocation and Rescission; Acceptance and Renunciation of Succession
第九百十九条（相続の承認及び放棄の撤回及び取消し）
The acceptance or renunciation of a succession may not be revoked even within the period referred to in Article 915, paragraph (1).
相続の承認及び放棄は、第九百十五条第一項の期間内でも、撤回することができない。
The provisions of the preceding paragraph do not preclude the acceptance or renunciation of a succession from being rescinded pursuant to the provisions of Part I (General Provisions) and Part IV (Relatives).
前項の規定は、第一編（総則）及び前編（親族）の規定により相続の承認又は放棄の取消しをすることを妨げない。
The right of rescission referred to in the preceding paragraph is extinguished by prescription if not exercised within six months of the time ratification becomes possible. It is also extinguished by prescription once ten years have passed since the time of acceptance or renunciation of the succession.
前項の取消権は、追認をすることができる時から六箇月間行使しないときは、時効によって消滅する。相続の承認又は放棄の時から十年を経過したときも、同様とする。
A person seeking to rescind a qualified acceptance or renunciation of a succession pursuant to the provisions of paragraph (2) must file a statement with the family court to that effect.
第二項の規定により限定承認又は相続の放棄の取消しをしようとする者は、その旨を家庭裁判所に申述しなければならない。
(Period for Acceptance or Renunciation of Succession)
An heir must either accept the succession unconditionally or with qualifications, or renounce it, within three months of the time the heir learns that succession has opened to that heir; provided…
相続人は、自己のために相続の開始があったことを知った時から三箇月以内に、相続について、単純若しくは限定の承認又は放棄をしなければならない。ただし、この期間は、利害関係人又は検察官の請求によって、家庭裁判所において伸長することができる。
Open this provision(Revocation and Rescission; Acceptance and Renunciation of Succession)
The acceptance or renunciation of a succession may not be revoked even within the period referred to in Article 915, paragraph (1).
相続の承認及び放棄は、第九百十五条第一項の期間内でも、撤回することができない。
Open this provision(Revocation and Rescission; Acceptance and Renunciation of Succession)
The provisions of the preceding paragraph do not preclude the acceptance or renunciation of a succession from being rescinded pursuant to the provisions of Part I (General Provisions) and Part IV…
前項の規定は、第一編（総則）及び前編（親族）の規定により相続の承認又は放棄の取消しをすることを妨げない。
Open this provisionrescission
取消し
Undoing a legal act, such as an offer or acceptance of a contract (意思表示, a manifestation of intention), that the law says may be rescinded: for example one made through an important mistake, though a mistake about the circumstances behind the act only if it had been made clear that they were its basis, and as a rule not where the person was grossly careless (Civil Code, Article 95), or one made under fraud or duress, though fraud by a third party only if the other party knew of it or could have known (Article 96), or one a minor made without the consent of their legal representative (Article 5, paragraph (2)). Once rescinded, the act is treated as void from the start (Article 121). Only the person who made it, their representative or successor, or someone whose consent it needed may rescind it (Article 120). The right is lost if not used within five years from when the act could be confirmed — once the mistake, fraud or other cause has ended and the person knows they can rescind (Article 124) — or twenty years from the act (Article 126). It is lost sooner if the person confirms the act, and once it could be confirmed, performing it or demanding performance without reserving objections counts as confirming it (Articles 122 and 125). The Consumer Contract Act adds grounds of its own, such as a business telling the consumer something untrue about an important matter when soliciting the contract, where the consumer believed it and made the contract because of it (Article 4, paragraph (1), item (i)), and gives most of them a shorter time: one year from when the act could be confirmed, and five years from the contract (Article 7, paragraph (1)).
Written by AI using Civil Code, Arts. 5, 95, 96, 120, 121, 122, 124, 125, 126 and Consumer Contract Act, Arts. 4, 7 as a reference.