# 民法 / Civil Code — 附　則 (Supplementary Provisions)

- 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: 附　則 (Supplementary Provisions) — address `suppl-4111-149`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/suppl-4111-149
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/suppl-4111-149
- 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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## 附　則 平成一一年一二月八日法律第一四九号
<sup>suppl-4111-149 · https://japanlaw.org/en/civil-code/suppl-4111-149 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149</sup>

### 第一条（施行期日） — Effective Date
<sup>caption: machine translation, not official</sup>
<sup>suppl-4111-149/art-1 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-1 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-1</sup>

**第一項**  この法律は、平成十二年四月一日から施行する。ただし、第九百六十九条、第九百七十二条、第九百七十六条及び第九百七十九条の改正規定、第九百六十九条の次に一条を加える改正規定並びに次条の規定は、公布の日から起算して一月を経過した日から施行する。
<sup>suppl-4111-149/art-1/par-1 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-1/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-1/par-1</sup>
This Act comes into effect as of April 1, 2000; provided, however, that the provisions amending Articles 969, 972, 976 and 979, the provisions adding one Article after Article 969, and the provisions of the following Article come into effect as of the day on which one month has elapsed from the date of promulgation.
<sup>machine translation, not official</sup>

### 第二条（民法の一部改正に伴う経過措置の原則） — Principle of Transitional Measures Accompanying the Partial Amendment of the Civil Code
<sup>caption: machine translation, not official</sup>
<sup>suppl-4111-149/art-2 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-2 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-2</sup>

**第一項**  この法律による改正後の民法（次条において「新法」という。）の規定は、次条第三項の規定による場合を除き、当該改正規定の施行前に生じた事項にも適用する。ただし、改正前の民法（次条において「旧法」という。）の規定によって生じた効力を妨げない。
<sup>suppl-4111-149/art-2/par-1 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-2/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-2/par-1</sup>
The provisions of the Civil Code as amended by this Act (referred to as the "New Act" in the following Article) also apply to matters that arose before the date on which the relevant amending provisions come into effect, except in the case provided for in paragraph (3) of the following Article; provided, however, that this does not preclude the effect that arose under the provisions of the Civil Code before amendment (referred to as the "Former Act" in the following Article).
<sup>machine translation, not official</sup>

### 第三条（禁治産及び準禁治産の宣告等に関する経過措置） — Transitional Measures Concerning Declarations of Interdiction and Quasi-Interdiction, etc.
<sup>caption: machine translation, not official</sup>
<sup>suppl-4111-149/art-3 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-3 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3</sup>

**第一項**  旧法の規定による禁治産の宣告は新法の規定による後見開始の審判と、当該禁治産の宣告を受けた禁治産者並びにその後見人及び後見監督人は当該後見開始の審判を受けた成年被後見人並びにその成年後見人及び成年後見監督人とみなす。
<sup>suppl-4111-149/art-3/par-1 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-1</sup>
A declaration of interdiction under the provisions of the Former Act is deemed to be a decision for commencement of guardianship under the provisions of the New Act, and the interdicted person who received that declaration of interdiction and that person's guardian and guardian's supervisor are deemed to be the adult ward who received that decision for commencement of guardianship and that person's adult guardian and supervisor for the guardian of an adult.
<sup>machine translation, not official</sup>

**第二項**  旧法の規定による心神耗弱を原因とする準禁治産の宣告は新法の規定による保佐開始の審判と、当該準禁治産の宣告を受けた準禁治産者及びその保佐人は当該保佐開始の審判を受けた被保佐人及びその保佐人とみなす。
<sup>suppl-4111-149/art-3/par-2 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-2 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-2</sup>
A declaration of quasi-interdiction under the provisions of the Former Act on the ground of diminished mental capacity is deemed to be a decision for commencement of curatorship under the provisions of the New Act, and the quasi-interdicted person who received that declaration of quasi-interdiction and that person's curator are deemed to be the person under curatorship who received that decision for commencement of curatorship and that person's curator.
<sup>machine translation, not official</sup>

**第三項**  前項に規定する準禁治産者以外の準禁治産者及びその保佐人に関する民法の規定の適用については、第八百四十六条、第九百七十四条及び第千九条の改正規定を除き、なお従前の例による。
<sup>suppl-4111-149/art-3/par-3 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-3</sup>
With respect to the application of the provisions of the Civil Code to quasi-interdicted persons other than the quasi-interdicted persons prescribed in the preceding paragraph and their curators, the provisions then in force continue to govern, except for the provisions amending Articles 846, 974 and 1009.
<sup>machine translation, not official</sup>

**第四項**  旧法の規定による禁治産又は準禁治産の宣告の請求（この法律の施行前に当該請求に係る審判が確定したものを除く。）は、新法の規定による後見開始又は保佐開始の審判の請求とみなす。
<sup>suppl-4111-149/art-3/par-4 · https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-4 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-4</sup>
A petition for a declaration of interdiction or quasi-interdiction under the provisions of the Former Act (excluding one for which the adjudication pertaining to that petition became final before this Act comes into effect) is deemed to be a petition for a decision for commencement of guardianship or for commencement of curatorship under the provisions of the New Act.
<sup>machine translation, not official</sup>

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## Cites
- suppl-4111-149/art-1/par-1: 次条 → 民法 附則第二条 (Supplementary Provisions, Article 2), suppl-4111-149/art-2 — https://japanlaw.org/en/civil-code/suppl-4111-149/art-2 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-2
- suppl-4111-149/art-2/par-1: 次条 → 民法 附則第三条 (Supplementary Provisions, Article 3), suppl-4111-149/art-3 — https://japanlaw.org/en/civil-code/suppl-4111-149/art-3 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3
- suppl-4111-149/art-2/par-1: 次条第三項 → 民法 附則第三条第三項 (Supplementary Provisions, Article 3, paragraph (3)), suppl-4111-149/art-3/par-3 — https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-3
- suppl-4111-149/art-3/par-3: 前項 → 民法 附則第三条第二項 (Supplementary Provisions, Article 3, paragraph (2)), suppl-4111-149/art-3/par-2 — https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-2 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-2

## Cited by

3 provisions cite this one. No official source publishes this direction.

- 民法 附則第一条第一項（施行期日） — https://japanlaw.org/en/civil-code/suppl-4111-149/art-1/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-1/par-1
- 民法 附則第二条第一項（民法の一部改正に伴う経過措置の原則） — https://japanlaw.org/en/civil-code/suppl-4111-149/art-2/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-2/par-1
- 民法 附則第三条第三項（禁治産及び準禁治産の宣告等に関する経過措置） — https://japanlaw.org/en/civil-code/suppl-4111-149/art-3/par-3 · https://japanlaw.org/l/129AC0000000089/suppl-4111-149/art-3/par-3

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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-20261011T170941-016, translated 2026-10-12
- This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11
