# 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 — 第四十五条 (Article 45) This is the Markdown twin of https://japanlaw.org/ja/antimonopoly-act/art-45. 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: 第四十五条 (Article 45) — address `art-45` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/ja/antimonopoly-act/art-45 - 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. --- ### 第四十五条 art-45 · https://japanlaw.org/ja/antimonopoly-act/art-45 **第一項** 何人も、この法律の規定に違反する事実があると思料するときは、公正取引委員会に対し、その事実を報告し、適当な措置をとるべきことを求めることができる。 art-45/par-1 · https://japanlaw.org/ja/antimonopoly-act/art-45/par-1 Whenever any person believes there to be a fact in violation of the provisions of this Act, the person may report the fact to the Japan Fair Trade Commission and ask for appropriate measures to be taken. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項に規定する報告があつたときは、公正取引委員会は、事件について必要な調査をしなければならない。 art-45/par-2 · https://japanlaw.org/ja/antimonopoly-act/art-45/par-2 When the Japan Fair Trade Commission receives a report as provided in the preceding paragraph, it must make the necessary investigations into the case. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 第一項の規定による報告が、公正取引委員会規則で定めるところにより、書面で具体的な事実を摘示してされた場合において、当該報告に係る事件について、適当な措置をとり、又は措置をとらないこととしたときは、公正取引委員会は、速やかに、その旨を当該報告をした者に通知しなければならない。 art-45/par-3 · https://japanlaw.org/ja/antimonopoly-act/art-45/par-3 If a report made pursuant to the provisions of paragraph (1) includes a written allegation with regard to a specific fact pursuant to the provisions of the Rules of the Japan Fair Trade Commission, when the Japan Fair Trade Commission decides to take appropriate measures or to take no measures with respect to the case connected with the report, the Japan Fair Trade Commission must promptly notify the person who made the report to that effect. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 公正取引委員会は、この法律の規定に違反する事実又は独占的状態に該当する事実があると思料するときは、職権をもつて適当な措置をとることができる。 art-45/par-4 · https://japanlaw.org/ja/antimonopoly-act/art-45/par-4 When the Japan Fair Trade Commission believes there to be a fact in violation of the provisions of this Act or a fact falling under the purview of a monopolistic situation, the Japan Fair Trade Commission may take appropriate measures on its own authority. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-45/par-2: 前項 → 私的独占の禁止及び公正取引の確保に関する法律 第四十五条第一項 (Article 45, paragraph (1)), art-45/par-1 — https://japanlaw.org/ja/antimonopoly-act/art-45/par-1 - art-45/par-3: 第一項 → 私的独占の禁止及び公正取引の確保に関する法律 第四十五条第一項 (Article 45, paragraph (1)), art-45/par-1 — https://japanlaw.org/ja/antimonopoly-act/art-45/par-1 ## Cited by 5 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 第七条の四第二項第三号 — https://japanlaw.org/ja/antimonopoly-act/art-7-4/par-2/item-3 - 私的独占の禁止及び公正取引の確保に関する法律 第四十五条第二項 — https://japanlaw.org/ja/antimonopoly-act/art-45/par-2 - 私的独占の禁止及び公正取引の確保に関する法律 第四十五条第三項 — https://japanlaw.org/ja/antimonopoly-act/art-45/par-3 - 私的独占の禁止及び公正取引の確保に関する法律 第四十六条第一項 — https://japanlaw.org/ja/antimonopoly-act/art-46/par-1 - 私的独占の禁止及び公正取引の確保に関する法律 第七十条の二第二項 — https://japanlaw.org/ja/antimonopoly-act/art-70-2/par-2 --- ## 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 - 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