# 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 — 第十三条 (Supplementary Provisions, Article 13) This is the Markdown twin of https://japanlaw.org/en/antimonopoly-act/suppl-4211-51/art-13. 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: 第十三条 (Supplementary Provisions, Article 13)（合併又は分割の無効の訴えに関する経過措置） — address `suppl-4211-51/art-13` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/en/antimonopoly-act/suppl-4211-51/art-13 - 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. --- ### 第十三条（合併又は分割の無効の訴えに関する経過措置） — Transitional Measures Concerning Actions for Invalidation of a Merger or Split caption: machine translation, not official suppl-4211-51/art-13 · https://japanlaw.org/en/antimonopoly-act/suppl-4211-51/art-13 **第一項** 施行日前に旧独占禁止法第十五条第二項（同条第四項において読み替えて準用する場合を含む。）及び第五項又は第十五条の二第二項及び第三項（これらの規定を同条第六項において読み替えて準用する場合を含む。）並びに同条第七項において読み替えて準用する旧独占禁止法第十五条第五項の規定に違反して会社が合併、共同新設分割又は吸収分割をしたときにおける合併、共同新設分割又は吸収分割の無効の訴えについては、なお従前の例による。 suppl-4211-51/art-13/par-1 · https://japanlaw.org/en/antimonopoly-act/suppl-4211-51/art-13/par-1 With regard to an action for invalidation of a merger, joint incorporation-type split, or absorption-type split in the case where, before the Effective Date, a company has carried out a merger, joint incorporation-type split, or absorption-type split in violation of the provisions of Article 15, paragraph (2) of the Former Antimonopoly Act (including as applied mutatis mutandis following the deemed replacement of terms pursuant to Article 15, paragraph (4) of the Former Antimonopoly Act) and paragraph (5) of that Article, or Article 15-2, paragraphs (2) and (3) of the Former Antimonopoly Act (including as applied mutatis mutandis following the deemed replacement of terms pursuant to Article 15-2, paragraph (6) of the Former Antimonopoly Act), and Article 15, paragraph (5) of the Former Antimonopoly Act as applied mutatis mutandis following the deemed replacement of terms pursuant to Article 15-2, paragraph (7) of the Former Antimonopoly Act, the provisions then in force continue to govern. machine translation, not official ## Cited by 1 provision cites 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 附則第十九条第一項（政令への委任） — https://japanlaw.org/en/antimonopoly-act/suppl-4211-51/art-19/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-20261106T060022-014, 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