# 私的独占の禁止及び公正取引の確保に関する法律 / Act on Prohibition of Private Monopolization and Maintenance of Fair Trade — 第一条 (Supplementary Provisions, Article 1) This is the Markdown twin of https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-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. - Law: 私的独占の禁止及び公正取引の確保に関する法律 (Act on Prohibition of Private Monopolization and Maintenance of Fair Trade), 昭和二十二年法律第五十四号 - English title "Act on Prohibition of Private Monopolization and Maintenance of Fair Trade": 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: 第一条 (Supplementary Provisions, Article 1)（施行期日） — address `suppl-4101-81/art-1` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-1 - e-Gov law ID: 322AC0000000054 — never renamed. A permanent link, `/l/{lawId}/{address}` on this site, redirects to the page. - Every provision below carries its address and its URL 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. --- ### 第一条（施行期日） — Effective Date caption: machine translation, not official suppl-4101-81/art-1 · https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-1 **第一項** この法律は、平成十一年一月一日から施行する。ただし、第十一条第一項及び第二項の改正規定、第十三条第三項及び第十四条第二項を削る改正規定、第六十七条第一項の改正規定（「第十四条第一項」を「第十四条」に改める部分に限る。）、第九十一条第五号、第九十一条の二第六号及び第七号並びに第九十五条第一項第二号の改正規定並びに附則第三条、第四条、第七条及び第八条の規定は、公布の日から施行する。 suppl-4101-81/art-1/par-1 · https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-1/par-1 This Act comes into effect on January 1, 1999, provided, however, that the provisions amending Article 11, paragraphs (1) and (2), the provisions deleting Article 13, paragraph (3) and Article 14, paragraph (2), the provisions amending Article 67, paragraph (1) (limited to the part replacing "Article 14, paragraph (1)" with "Article 14"), the provisions amending Article 91, item (v), Article 91-2, items (vi) and (vii) and Article 95, paragraph (1), item (ii), and the provisions of Article 3, Article 4, Article 7 and Article 8 of the Supplementary Provisions come into effect as of the date of promulgation. machine translation, not official --- ## Cites - suppl-4101-81/art-1/par-1: 附則第三条 → 私的独占の禁止及び公正取引の確保に関する法律 附則第三条 (Supplementary Provisions, Article 3), suppl-4101-81/art-3 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-3 - suppl-4101-81/art-1/par-1: 第四条 → 私的独占の禁止及び公正取引の確保に関する法律 附則第四条 (Supplementary Provisions, Article 4), suppl-4101-81/art-4 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-4 - suppl-4101-81/art-1/par-1: 第七条 → 私的独占の禁止及び公正取引の確保に関する法律 附則第七条 (Supplementary Provisions, Article 7), suppl-4101-81/art-7 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-7 - suppl-4101-81/art-1/par-1: 第八条 → 私的独占の禁止及び公正取引の確保に関する法律 附則第八条 (Supplementary Provisions, Article 8), suppl-4101-81/art-8 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-8 ## Cited by 3 provisions cite this one. No official source publishes this direction. - 私的独占の禁止及び公正取引の確保に関する法律 附則第三条第一項 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-3/par-1 - 私的独占の禁止及び公正取引の確保に関する法律 附則第四条第一項 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-4/par-1 - 私的独占の禁止及び公正取引の確保に関する法律 附則第七条第一項 — https://japanlaw.org/ja/antimonopoly-act/suppl-4101-81/art-7/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 私的独占の禁止及び公正取引の確保に関する法律 — the text in force from 2026-05-21 (https://laws.e-gov.go.jp/law/322AC0000000054/20260521_505AC0000000063), retrieved 2026-11-06 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Act on Prohibition of Private Monopolization and Maintenance of Fair Trade — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/5212/tb), retrieved 2026-11-06 - claude-sonnet-5-5 — Machine translation, batch antimonopoly-act-20261106T060022-006, translated 2026-11-06 - claude-sonnet-5-5 — Machine translation, batch antimonopoly-act-20261106T060022-009, translated 2026-11-06 - This site's parser, version 225 — 私的独占の禁止及び公正取引の確保に関する法律 — structure, counts, cross-references and defined terms, computed 2026-11-06