# 民法 / Civil Code — 第八百九十九条の二 (Article 899-2)

- 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: 第八百九十九条の二 (Article 899-2)（共同相続における権利の承継の対抗要件） — address `art-899-2`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/en/civil-code/art-899-2
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/129AC0000000089/art-899-2
- 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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### 第八百九十九条の二（共同相続における権利の承継の対抗要件） — Requirement for Perfection of Assumption of Rights in Joint Succession
<sup>caption: machine translation, not official</sup>
<sup>art-899-2 · https://japanlaw.org/en/civil-code/art-899-2 · https://japanlaw.org/l/129AC0000000089/art-899-2</sup>

    **第一項**  相続による権利の承継は、遺産の分割によるものかどうかにかかわらず、次条及び第九百一条の規定により算定した相続分を超える部分については、登記、登録その他の対抗要件を備えなければ、第三者に対抗することができない。
    <sup>art-899-2/par-1 · https://japanlaw.org/en/civil-code/art-899-2/par-1 · https://japanlaw.org/l/129AC0000000089/art-899-2/par-1</sup>
    The assumption of rights by succession, regardless of whether it is by division of the estate, may not be asserted against a third party with respect to the portion exceeding the share of the estate calculated pursuant to the provisions of the following Article and Article 901, unless registration, recording or any other requirement for perfection has been satisfied.
    <sup>machine translation, not official</sup>

    **第二項**  前項の権利が債権である場合において、次条及び第九百一条の規定により算定した相続分を超えて当該債権を承継した共同相続人が当該債権に係る遺言の内容（遺産の分割により当該債権を承継した場合にあっては、当該債権に係る遺産の分割の内容）を明らかにして債務者にその承継の通知をしたときは、共同相続人の全員が債務者に通知をしたものとみなして、同項の規定を適用する。
    <sup>art-899-2/par-2 · https://japanlaw.org/en/civil-code/art-899-2/par-2 · https://japanlaw.org/l/129AC0000000089/art-899-2/par-2</sup>
    If, in the case where the right referred to in the preceding paragraph is a claim, a coheir who has assumed the claim in excess of the share of the estate calculated pursuant to the provisions of the following Article and Article 901 notifies the obligor of the assumption, making clear the content of the will relating to the claim (or, if the claim was assumed by division of the estate, the content of the division of the estate relating to the claim), the provisions of that paragraph apply on the deeming that all of the coheirs have given notice to the obligor.
    <sup>machine translation, not official</sup>

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## Cites
- art-899-2/par-1: 次条 → 民法 第九百条 (Article 900), art-900 — https://japanlaw.org/en/civil-code/art-900 · https://japanlaw.org/l/129AC0000000089/art-900
- art-899-2/par-1: 第九百一条 → 民法 第九百一条 (Article 901), art-901 — https://japanlaw.org/en/civil-code/art-901 · https://japanlaw.org/l/129AC0000000089/art-901
- art-899-2/par-2: 前項 → 民法 第八百九十九条の二第一項 (Article 899-2, paragraph (1)), art-899-2/par-1 — https://japanlaw.org/en/civil-code/art-899-2/par-1 · https://japanlaw.org/l/129AC0000000089/art-899-2/par-1
- art-899-2/par-2: 次条 → 民法 第九百条 (Article 900), art-900 — https://japanlaw.org/en/civil-code/art-900 · https://japanlaw.org/l/129AC0000000089/art-900
- art-899-2/par-2: 第九百一条 → 民法 第九百一条 (Article 901), art-901 — https://japanlaw.org/en/civil-code/art-901 · https://japanlaw.org/l/129AC0000000089/art-901

## Cited by

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

- 民法 第八百九十九条の二第二項（共同相続における権利の承継の対抗要件） — https://japanlaw.org/en/civil-code/art-899-2/par-2 · https://japanlaw.org/l/129AC0000000089/art-899-2/par-2
- 民法 第千十四条第二項（特定財産に関する遺言の執行） — https://japanlaw.org/en/civil-code/art-1014/par-2 · https://japanlaw.org/l/129AC0000000089/art-1014/par-2
- 民法 附則第三条第一項（共同相続における権利の承継の対抗要件に関する経過措置） — https://japanlaw.org/en/civil-code/suppl-4301-72/art-3/par-1 · https://japanlaw.org/l/129AC0000000089/suppl-4301-72/art-3/par-1

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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-20261011T170941-006, translated 2026-10-12
- This site's parser, version 190 — 民法 — structure, counts, cross-references and defined terms, computed 2026-10-11