# 会社法 / Companies Act — 第九条 (Article 9) This is the Markdown twin of https://japanlaw.org/ja/companies-act/art-9. 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: 第九条 (Article 9)（自己の商号の使用を他人に許諾した会社の責任） — address `art-9` - Text in force since: 2026-08-12 - URL (the page that opens at this provision): https://japanlaw.org/ja/companies-act/art-9 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/417AC0000000086/art-9 - 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. --- ### 第九条（自己の商号の使用を他人に許諾した会社の責任） — (Liability of Companies Permitting Others to Use Its Trade Name) caption: Ministry of Justice translation — Japanese Law Translation Database System art-9 · https://japanlaw.org/ja/companies-act/art-9 · https://japanlaw.org/l/417AC0000000086/art-9 **第一項** 自己の商号を使用して事業又は営業を行うことを他人に許諾した会社は、当該会社が当該事業を行うものと誤認して当該他人と取引をした者に対し、当該他人と連帯して、当該取引によって生じた債務を弁済する責任を負う。 art-9/par-1 · https://japanlaw.org/ja/companies-act/art-9/par-1 · https://japanlaw.org/l/417AC0000000086/art-9/par-1 Any company that has permitted others to carry out business or engage in any enterprise by using the company's own trade name is jointly and severally liable, regarding any person who has transacted with relevant others based on misunderstanding that relevant company carries out relevant business, for the performance of any obligations which may arise from relevant transaction. 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 第五条第一項（商行為） — https://japanlaw.org/ja/companies-act/art-5/par-1 · https://japanlaw.org/l/417AC0000000086/art-5/par-1 --- ## 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