# 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 — 第三条 (Supplementary Provisions, Article 3) This is the Markdown twin of https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3. 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: 第三条 (Supplementary Provisions, Article 3)（私的独占の禁止及び公正取引の確保に関する法律の一部改正に伴う経過措置） — address `suppl-4111-146/art-3` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3 - 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. --- ### 第三条（私的独占の禁止及び公正取引の確保に関する法律の一部改正に伴う経過措置） — Transitional Measures Accompanying the Partial Amendment of the Act on Prohibition of Private Monopolization and Maintenance of Fair Trade caption: machine translation, not official suppl-4111-146/art-3 · https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3 **第一項** 第三条の規定による改正後の私的独占の禁止及び公正取引の確保に関する法律（次項において「新法」という。）の規定は、同項に定めるものを除き、同条の規定の施行の日（以下この条において「施行日」という。）以後に開始された行為について適用し、施行日前に既になくなっている行為については、なお従前の例による。 suppl-4111-146/art-3/par-1 · https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3/par-1 The provisions of the Act on Prohibition of Private Monopolization and Maintenance of Fair Trade as amended pursuant to the provisions of Article 3 (referred to as the "New Act" in the following paragraph) apply, except for what is provided for in that paragraph, to acts that commenced on or after the date on which the provisions of that Article come into effect (hereinafter in this Article referred to as the "Effective Date"), and with regard to acts that had already ceased to exist before the Effective Date, the provisions then in force continue to govern. machine translation, not official **第二項** 新法の規定は、施行日前に開始され、施行日以後に終わった行為のうち施行日以後に係るものについて適用し、当該行為のうち施行日前に係るものについては、なお従前の例による。 suppl-4111-146/art-3/par-2 · https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3/par-2 The provisions of the New Act apply to the portion on or after the Effective Date of acts that commenced before the Effective Date and ended on or after the Effective Date, and with regard to the portion of those acts before the Effective Date, the provisions then in force continue to govern. machine translation, not official --- ## Cites - suppl-4111-146/art-3/par-1: 次項 → 私的独占の禁止及び公正取引の確保に関する法律 附則第三条第二項 (Supplementary Provisions, Article 3, paragraph (2)), suppl-4111-146/art-3/par-2 — https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3/par-2 - suppl-4111-146/art-3/par-1: この条 → 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-4111-146/art-3 — https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-3 ## Cited by 2 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（私的独占の禁止及び公正取引の確保に関する法律の一部改正に伴う経過措置） — https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/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 附則第十五条第一項（政令への委任） — https://japanlaw.org/en/antimonopoly-act/suppl-4111-146/art-15/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-20261106T060022-010, 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