# 著作権法 / Copyright Act — 第六十四条 (Article 64) - Law: 著作権法 (Copyright Act), 昭和四十五年法律第四十八号 - English title "Copyright 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: 第六十四条 (Article 64)（共同著作物の著作者人格権の行使） — address `art-64` - Text in force since: 2026-06-24 - URL (the page that opens at this provision): https://japanlaw.org/en/copyright-act/art-64 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/345AC0000000048/art-64 - 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. --- ### 第六十四条（共同著作物の著作者人格権の行使） — (Exercise of the Moral Rights of Co-Authors) caption: Ministry of Justice translation — Japanese Law Translation Database System art-64 · https://japanlaw.org/en/copyright-act/art-64 · https://japanlaw.org/l/345AC0000000048/art-64 **第一項** 共同著作物の著作者人格権は、著作者全員の合意によらなければ、行使することができない。 art-64/par-1 · https://japanlaw.org/en/copyright-act/art-64/par-1 · https://japanlaw.org/l/345AC0000000048/art-64/par-1 The moral rights of co-authors of a joint work may not be exercised without the unanimous agreement of all the co-authors. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 共同著作物の各著作者は、信義に反して前項の合意の成立を妨げることができない。 art-64/par-2 · https://japanlaw.org/en/copyright-act/art-64/par-2 · https://japanlaw.org/l/345AC0000000048/art-64/par-2 A co-author may not prevent the agreement referred to in the preceding paragraph from being reached in breach of good faith. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 共同著作物の著作者は、そのうちからその著作者人格権を代表して行使する者を定めることができる。 art-64/par-3 · https://japanlaw.org/en/copyright-act/art-64/par-3 · https://japanlaw.org/l/345AC0000000048/art-64/par-3 Co-authors may choose one co-author from among themselves to represent them in the exercise of their moral rights. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 前項の権利を代表して行使する者の代表権に加えられた制限は、善意の第三者に対抗することができない。 art-64/par-4 · https://japanlaw.org/en/copyright-act/art-64/par-4 · https://japanlaw.org/l/345AC0000000048/art-64/par-4 Limitations on the representative authority of the person representing the co-authors in the exercise of the rights referred to in the preceding paragraph may not be duly asserted against a third party that is without knowledge of those limitations. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-64/par-2: 前項 → 著作権法 第六十四条第一項 (Article 64, paragraph (1)), art-64/par-1 — https://japanlaw.org/en/copyright-act/art-64/par-1 · https://japanlaw.org/l/345AC0000000048/art-64/par-1 - art-64/par-4: 前項 → 著作権法 第六十四条第三項 (Article 64, paragraph (3)), art-64/par-3 — https://japanlaw.org/en/copyright-act/art-64/par-3 · https://japanlaw.org/l/345AC0000000048/art-64/par-3 ## Cited by 3 provisions cite this one. No official source publishes this direction. - 著作権法 第六十四条第二項（共同著作物の著作者人格権の行使） — https://japanlaw.org/en/copyright-act/art-64/par-2 · https://japanlaw.org/l/345AC0000000048/art-64/par-2 - 著作権法 第六十四条第四項（共同著作物の著作者人格権の行使） — https://japanlaw.org/en/copyright-act/art-64/par-4 · https://japanlaw.org/l/345AC0000000048/art-64/par-4 - 著作権法 第六十五条第四項（共有著作権の行使） — https://japanlaw.org/en/copyright-act/art-65/par-4 · https://japanlaw.org/l/345AC0000000048/art-65/par-4 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 著作権法 — the text in force from 2026-06-24 (https://laws.e-gov.go.jp/law/345AC0000000048/20260624_508AC0000000048), retrieved 2026-10-19 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Copyright Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4207/tb), retrieved 2026-10-19 - This site's parser, version 210 — 著作権法 — structure, counts, cross-references and defined terms, computed 2026-10-19