# 会社法 / Companies Act — 第六百三十九条 (Article 639) This is the Markdown twin of https://japanlaw.org/ja/companies-act/art-639. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp. - Law: 会社法 (Companies Act), 平成十七年法律第八十六号 - English title "Companies Act": 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: 第六百三十九条 (Article 639)（合資会社の社員の退社による定款のみなし変更） — address `art-639` - Text in force since: 2026-08-12 - URL (the page that opens at this provision): https://japanlaw.org/ja/companies-act/art-639 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/417AC0000000086/art-639 - 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. --- ### 第六百三十九条（合資会社の社員の退社による定款のみなし変更） — (Deemed Changes in Articles of Incorporation on Withdrawal of Members of a Limited Partnership Company) caption: Ministry of Justice translation — Japanese Law Translation Database System art-639 · https://japanlaw.org/ja/companies-act/art-639 · https://japanlaw.org/l/417AC0000000086/art-639 **第一項** 合資会社の有限責任社員が退社したことにより当該合資会社の社員が無限責任社員のみとなった場合には、当該合資会社は、合名会社となる定款の変更をしたものとみなす。 art-639/par-1 · https://japanlaw.org/ja/companies-act/art-639/par-1 · https://japanlaw.org/l/417AC0000000086/art-639/par-1 If, due to withdrawal of members with limited liability, members of a limited partnership company consist only of members with unlimited liability, relevant limited partnership company is deemed to have effected a change in the articles of incorporation to become an general partnership company. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 合資会社の無限責任社員が退社したことにより当該合資会社の社員が有限責任社員のみとなった場合には、当該合資会社は、合同会社となる定款の変更をしたものとみなす。 art-639/par-2 · https://japanlaw.org/ja/companies-act/art-639/par-2 · https://japanlaw.org/l/417AC0000000086/art-639/par-2 If, due to withdrawal of members with unlimited liability, members of a limited partnership company consist only of members with limited liability, relevant limited partnership company is deemed to have effected changes in the articles of incorporation to become a limited liability company. Ministry of Justice translation — Japanese Law Translation Database System ## Cited by 1 provision cites this one. No official source publishes this direction. - 会社法 第六百四十条第二項（定款の変更時の出資の履行） — https://japanlaw.org/ja/companies-act/art-640/par-2 · https://japanlaw.org/l/417AC0000000086/art-640/par-2 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 会社法 — the text in force from 2026-08-12 (https://laws.e-gov.go.jp/law/417AC0000000086/20260812_508AC0000000064), retrieved 2026-09-17 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Companies Act — Ministry of Justice translation (part 1 of 2) (https://www.japaneselawtranslation.go.jp/en/laws/view/4481/tb), retrieved 2026-09-17 - This site's parser, version 223 — 会社法 — structure, counts, cross-references and defined terms, computed 2026-09-17