# 民法 / Civil Code — 第十八条 (Supplementary Provisions, Article 18)

- 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: 第十八条 (Supplementary Provisions, Article 18) — address `suppl-3221-222/art-18`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/suppl-3221-222/art-18
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-18
- 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.

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### 第十八条
<sup>suppl-3221-222/art-18 · https://japanlaw.org/en/civil-code/suppl-3221-222/art-18 · https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-18</sup>

**第一項**  新法施行前に母が旧法の規定によつて子の財産の管理を辞した場合において、新法施行の際その子のためにまだ後見が開始していないときは、その辞任は、新法施行後は、その効力を有しない。
<sup>suppl-3221-222/art-18/par-1 · https://japanlaw.org/en/civil-code/suppl-3221-222/art-18/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-3221-222/art-18/par-1</sup>
If, before the New Act came into effect, a mother resigned from the management of the child's property under the provisions of the Former Act, and guardianship has not yet commenced for that child at the time the New Act comes into effect, that resignation ceases to be effective after the New Act comes into effect.
<sup>machine translation, not official</sup>

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## 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
- claude-sonnet-5-5 — Machine translation, batch civil-code-20261011T170941-012, translated 2026-10-12
- This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11