# 著作権法 / Copyright Act — 第二十条 (Supplementary Provisions, Article 20)

- 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: 第二十条 (Supplementary Provisions, Article 20)（著作権法の一部改正に伴う経過措置） — address `suppl-4301-72/art-20`
- Text in force since: 2026-06-24
- URL (the page that opens at this provision): https://japanlaw.org/en/copyright-act/suppl-4301-72/art-20
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/345AC0000000048/suppl-4301-72/art-20
- 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.

---

### 第二十条（著作権法の一部改正に伴う経過措置） — (Transitional Measures Accompanying the Partial Amendment of the Copyright Act)
<sup>caption: Ministry of Justice translation — Japanese Law Translation Database System</sup>
<sup>suppl-4301-72/art-20 · https://japanlaw.org/en/copyright-act/suppl-4301-72/art-20 · https://japanlaw.org/l/345AC0000000048/suppl-4301-72/art-20</sup>

**第一項**  前条の規定による改正後の著作権法第七十七条（同法第百四条において準用する場合を含む。）及び第八十八条第一項の規定は、施行日以後の著作権、出版権若しくは著作隣接権又はこれらの権利を目的とする質権（以下この条において「著作権等」という。）の移転について適用し、施行日前の著作権等の移転については、なお従前の例による。
<sup>suppl-4301-72/art-20/par-1 · https://japanlaw.org/en/copyright-act/suppl-4301-72/art-20/par-1 · https://japanlaw.org/l/345AC0000000048/suppl-4301-72/art-20/par-1</sup>
The provisions of Article 77 of the Copyright Act as amended by the provisions of the preceding Article (including as applied mutatis mutandis pursuant to Article 104 of that Act) and of Article 88, paragraph (1) of the Copyright Act as amended by the provisions of the preceding Article apply to the transfer of a copyright, print right, or neighboring rights, or a pledge on any of these rights (hereinafter referred to as a "copyright, etc." in this Article) that is conducted on or after the effective date, and prior laws continue to govern the transfer of a copyright, etc. that is conducted before the effective date.
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

---

## Cites
- suppl-4301-72/art-20/par-1: 著作権法第七十七条 → 著作権法 第七十七条 (Article 77), art-77 — https://japanlaw.org/en/copyright-act/art-77 · https://japanlaw.org/l/345AC0000000048/art-77
- suppl-4301-72/art-20/par-1: 同法第百四条 → 著作権法 第百四条 (Article 104), art-104 — https://japanlaw.org/en/copyright-act/art-104 · https://japanlaw.org/l/345AC0000000048/art-104
- suppl-4301-72/art-20/par-1: 第八十八条第一項 → 著作権法 第八十八条第一項 (Article 88, paragraph (1)), art-88/par-1 — https://japanlaw.org/en/copyright-act/art-88/par-1 · https://japanlaw.org/l/345AC0000000048/art-88/par-1
- suppl-4301-72/art-20/par-1: この条 → 著作権法 附則第二十条 (Supplementary Provisions, Article 20), suppl-4301-72/art-20 — https://japanlaw.org/en/copyright-act/suppl-4301-72/art-20 · https://japanlaw.org/l/345AC0000000048/suppl-4301-72/art-20

## Cited by

1 provision cites this one. No official source publishes this direction.

- 著作権法 附則第二十条第一項（著作権法の一部改正に伴う経過措置） — https://japanlaw.org/en/copyright-act/suppl-4301-72/art-20/par-1 · https://japanlaw.org/l/345AC0000000048/suppl-4301-72/art-20/par-1

---

## 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
