# 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 — 第四条 (Supplementary Provisions, Article 4) This is the Markdown twin of https://japanlaw.org/en/antimonopoly-act/suppl-3521-63/art-4. 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: 第四条 (Supplementary Provisions, Article 4) — address `suppl-3521-63/art-4` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/en/antimonopoly-act/suppl-3521-63/art-4 - 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. --- ### 第四条 suppl-3521-63/art-4 · https://japanlaw.org/en/antimonopoly-act/suppl-3521-63/art-4 **第一項** 新法第九条の二第一項第五号、第六号、第八号及び第九号の規定は、同項の規定の適用を受ける株式会社が昭和五十二年一月一日から施行日の前日までの間に取得した株式についても適用する。この場合において、施行日に同項の規定の適用を受ける株式会社についての同項第六号及び第九号の規定の適用については、同項第六号中「あらかじめ」とあり、及び同項第九号中「あらかじめ（緊急やむを得ない事情により取得する場合にあつては、取得後遅滞なく）」とあるのは、「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を改正する法律（昭和五十二年法律第六十三号）の施行後遅滞なく」とする。 suppl-3521-63/art-4/par-1 · https://japanlaw.org/en/antimonopoly-act/suppl-3521-63/art-4/par-1 The provisions of Article 9-2, paragraph (1), items (v), (vi), (viii) and (ix) of the New Act also apply to shares acquired by a stock company subject to the application of the provisions of that paragraph during the period from January 1, 1977 to the day preceding the Effective Date. In this case, with regard to the application of the provisions of items (vi) and (ix) of that paragraph to a stock company subject to the application of the provisions of that paragraph on the Effective Date, the phrase "in advance" in item (vi) of that paragraph and the phrase "in advance (or, in the case of acquisition due to urgent and unavoidable circumstances, without delay after the acquisition)" in item (ix) of that paragraph are deemed to be replaced with "without delay after the enforcement of the Act Partially Amending the Act on Prohibition of Private Monopolization and Maintenance of Fair Trade (Act No. 63 of 1977)". machine translation, not official --- ## 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-20261106T060022-007, 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