# Article 23, paragraph (1), its wordings — Arbitration Act

This is the Markdown twin of https://japanlaw.org/en/arbitration-act/history/art-23/par-1. 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.

How the wording of Article 23, paragraph (1) (第二十三条第一項) changed with each amendment, and how it will change.

- Law: Arbitration Act (仲裁法) — https://japanlaw.org/en/arbitration-act
- Provision: Article 23, paragraph (1) (第二十三条第一項) — https://japanlaw.org/en/arbitration-act/art-23/par-1 (as Markdown: https://japanlaw.org/md/en/arbitration-act/art-23/par-1)
- The law's amendments: https://japanlaw.org/en/arbitration-act/amendments
- 2 wordings, oldest first.

## 1. Before Act No. 53 of 2023

- State: In force

Japanese:

> 仲裁廷は、仲裁合意の存否又は効力に関する主張についての判断その他自己の仲裁権限（仲裁手続における審理及び仲裁判断を行う権限をいう。以下この条において同じ。）の有無についての判断を示すことができる。

English (Written for this site with AI, correcting the Ministry of Justice's English):

> An arbitral tribunal may rule on its own jurisdiction (meaning the authority to carry out proceedings in an arbitration procedure and to make an arbitral award; hereinafter the same applies in this Article), including a ruling on any allegations on the existence or validity of an arbitration agreement.

## 2. By 13 June 2028 — Act No. 53 of 2023

- State: Not yet in force
- Takes effect: By 13 June 2028
- The amendment: Moved to Article 25, paragraph (1); its words stay the same (Act No. 53 of 2023) — https://japanlaw.org/en/arbitration-act/amendments/20280613_505AC0000000053

Japanese:

> 仲裁廷は、仲裁合意の存否又は効力に関する主張についての判断その他自己の仲裁権限（仲裁手続における審理及び仲裁判断を行う権限をいう。以下この条において同じ。）の有無についての判断を示すことができる。

English (Written for this site with AI, correcting the Ministry of Justice's English):

> An arbitral tribunal may rule on its own jurisdiction (meaning the authority to carry out proceedings in an arbitration procedure and to make an arbitral award; hereinafter the same applies in this Article), including a ruling on any allegations on the existence or validity of an arbitration agreement.

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## Sources

- The dates and the amending laws: e-Gov (Digital Agency) (https://laws.e-gov.go.jp/law/415AC0000000138)
- English name of the law: Japanese Law Translation, Ministry of Justice (https://www.japaneselawtranslation.go.jp/en/laws/view/4440/tb)
- English titles of the amending laws: Written for this site with AI
- The Japanese text before: e-Gov (Digital Agency) (https://laws.e-gov.go.jp/law/415AC0000000138/20260521_504AC0000000048)
- The Japanese text after: e-Gov (Digital Agency) (https://laws.e-gov.go.jp/law/415AC0000000138/20280613_505AC0000000053)