# 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 — 第十五条の二 (Article 15-2)

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- 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: 第十五条の二 (Article 15-2) — address `art-15-2`
- Text in force since: 2026-05-21
- URL (the page that opens at this provision): https://japanlaw.org/ja/antimonopoly-act/art-15-2
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Only the Japanese as published by the government has legal effect; the text
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They are never merged and never substituted for one another.

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### 第十五条の二
<sup>art-15-2 · https://japanlaw.org/ja/antimonopoly-act/art-15-2</sup>

**第一項**  会社は、次の各号のいずれかに該当する場合には、共同新設分割（会社が他の会社と共同してする新設分割をいう。以下同じ。）をし、又は吸収分割をしてはならない。
<sup>art-15-2/par-1 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-1</sup>
No company must effect a joint incorporation-type split (meaning an incorporation-type split that a company effects jointly with another company; the same applies hereinafter) or an absorption-type split if any of the following items apply:
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **一**  当該共同新設分割又は当該吸収分割によつて一定の取引分野における競争を実質的に制限することとなる場合
  <sup>art-15-2/par-1/item-1 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-1/item-1</sup>
  if the joint incorporation-type split or absorption-type split substantially restrains competition in a particular field of trade; or
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **二**  当該共同新設分割又は当該吸収分割が不公正な取引方法によるものである場合
  <sup>art-15-2/par-1/item-2 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-1/item-2</sup>
  if unfair trade practices have been employed in the course of the joint incorporation-type split or absorption-type split.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第二項**  会社は、共同新設分割をしようとする場合において、次の各号のいずれかに該当するときは、公正取引委員会規則で定めるところにより、あらかじめ当該共同新設分割に関する計画を公正取引委員会に届け出なければならない。ただし、すべての共同新設分割をしようとする会社が同一の企業結合集団に属する場合は、この限りでない。
<sup>art-15-2/par-2 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2</sup>
Every company that intends to become a party to a joint incorporation-type split, pursuant to the provisions of the Rules of the Japan Fair Trade Commission, must notify the Japan Fair Trade Commission in advance of its plan with regard to the joint incorporation-type split if any of the following items applies provided, however, that this does not apply if all the companies intending to become parties to the joint incorporation-type split belong to the same group of combined companies:
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **一**  当該共同新設分割をしようとする会社のうち、いずれか一の会社（当該共同新設分割で設立する会社にその事業の全部を承継させようとするもの（以下この項において「全部承継会社」という。）に限る。）に係る国内売上高合計額が二百億円を下回らない範囲内において政令で定める金額を超え、かつ、他のいずれか一の会社（全部承継会社に限る。）に係る国内売上高合計額が五十億円を下回らない範囲内において政令で定める金額を超えるとき。
  <sup>art-15-2/par-2/item-1 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-1</sup>
  the total domestic sales amount of any one of the companies that intend to become parties to the joint incorporation-type split (limited to a company that intends to have the company incorporated through the joint incorporation-type split acquire all of its business (hereinafter in this paragraph "entire business succession company")) exceeds the amount specified by Cabinet Order, which must be no less than twenty billion yen, and the total domestic sales amount of any one of the other companies that intend to become parties to the same split (limited to an entire business succession company) exceeds the amount specified by Cabinet Order, which must be no less than five billion yen;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **二**  当該共同新設分割をしようとする会社のうち、いずれか一の会社（全部承継会社に限る。）に係る国内売上高合計額が二百億円を下回らない範囲内において政令で定める金額を超え、かつ、他のいずれか一の会社（当該共同新設分割で設立する会社にその事業の重要部分を承継させようとするもの（以下この項において「重要部分承継会社」という。）に限る。）の当該承継の対象部分に係る国内売上高が三十億円を下回らない範囲内において政令で定める金額を超えるとき。
  <sup>art-15-2/par-2/item-2 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-2</sup>
  the total domestic sales amount of any one of the companies that intend to become parties to the joint incorporation-type split (limited to an entire business succession company) exceeds the amount specified by Cabinet Order, which must be no less than twenty billion yen, and the domestic sales of any one of the other companies that intend to become parties to the same split (limited to a company that intends to have the company incorporated through the joint incorporation-type split acquire a substantial part of its business (hereinafter in this paragraph "substantial part succession company")), in connection with the part of the business to be succeeded to, exceeds the amount specified by Cabinet Order, which must be no less than three billion yen;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **三**  当該共同新設分割をしようとする会社のうち、いずれか一の会社（全部承継会社に限る。）に係る国内売上高合計額が五十億円を下回らない範囲内において政令で定める金額を超え、かつ、他のいずれか一の会社（重要部分承継会社に限る。）の当該承継の対象部分に係る国内売上高が百億円を下回らない範囲内において政令で定める金額を超えるとき（前号に該当するときを除く。）。
  <sup>art-15-2/par-2/item-3 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-3</sup>
  the total domestic sales amount of any one of the companies that intend to become parties to the joint incorporation-type split (limited to an entire business succession company) exceeds the amount specified by Cabinet Order, which must be no less than five billion yen, and the domestic sales of any one of the other companies that intend to become parties to the same split (limited to a substantial part succession company), in connection with the part of the business to be succeeded to, exceeds the amount specified by Cabinet Order, which must be no less than ten billion yen (excluding cases that fall under the previous item); or
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **四**  当該共同新設分割をしようとする会社のうち、いずれか一の会社（重要部分承継会社に限る。）の当該承継の対象部分に係る国内売上高が百億円を下回らない範囲内において政令で定める金額を超え、かつ、他のいずれか一の会社（重要部分承継会社に限る。）の当該承継の対象部分に係る国内売上高が三十億円を下回らない範囲内において政令で定める金額を超えるとき。
  <sup>art-15-2/par-2/item-4 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-4</sup>
  the domestic sales of any one of the companies that intend to become parties to the joint incorporation-type split (limited to a substantial part succession company), in connection with the part of the business to be succeeded to, exceeds the amount specified by Cabinet Order, which must be no less than ten billion yen, and the domestic sales of any one of the other companies that intend to become parties to the same split (limited to a substantial part succession company), in connection with the part of the business to be succeeded to, exceeds the amount specified by Cabinet Order, which must be no less than three billion yen.
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第三項**  会社は、吸収分割をしようとする場合において、次の各号のいずれかに該当するときは、公正取引委員会規則で定めるところにより、あらかじめ当該吸収分割に関する計画を公正取引委員会に届け出なければならない。ただし、すべての吸収分割をしようとする会社が同一の企業結合集団に属する場合は、この限りでない。
<sup>art-15-2/par-3 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3</sup>
Every company that intends to become a party to an absorption-type split must notify the Japan Fair Trade Commission in advance of its plan with regard to the absorption-type split pursuant to the provisions of the Rules of the Japan Fair Trade Commission if any of the following items applies provided, however, that this does not apply if all the companies intending to become parties to the absorption-type split belong to the same group of combined companies:
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **一**  当該吸収分割をしようとする会社のうち、分割をしようとするいずれか一の会社（当該吸収分割でその事業の全部を承継させようとするもの（次号において「全部承継会社」という。）に限る。）に係る国内売上高合計額が二百億円を下回らない範囲内において政令で定める金額を超え、かつ、分割によつて事業を承継しようとする会社に係る国内売上高合計額が五十億円を下回らない範囲内において政令で定める金額を超えるとき。
  <sup>art-15-2/par-3/item-1 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-1</sup>
  the total domestic sales amount of any one of the companies that intend to become parties to the absorption-type split (limited to a company that intends to alienate all of its business through the absorption-type split (referred to in the following item as "entire business succession company")) exceeds the amount specified by Cabinet Order, which must be no less than twenty billion yen, and the total domestic sales amount of the company that intends to succeed to the business through such a split exceeds the amount specified by Cabinet Order, which must be no less than five billion yen;
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **二**  当該吸収分割をしようとする会社のうち、分割をしようとするいずれか一の会社（全部承継会社に限る。）に係る国内売上高合計額が五十億円を下回らない範囲内において政令で定める金額を超え、かつ、分割によつて事業を承継しようとする会社に係る国内売上高合計額が二百億円を下回らない範囲内において政令で定める金額を超えるとき（前号に該当するときを除く。）。
  <sup>art-15-2/par-3/item-2 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-2</sup>
  the total domestic sales amount of any one of the companies that intend to become parties to the absorption-type split (limited to an entire business succession company) exceeds the amount specified by Cabinet Order, which must be no less than five billion yen, and the total domestic sales amount of the company that intends to succeed to the business through the split exceeds the amount specified by Cabinet Order, which must be no less than twenty billion yen (excluding cases that fall under the previous item);
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **三**  当該吸収分割をしようとする会社のうち、分割をしようとするいずれか一の会社（当該吸収分割でその事業の重要部分を承継させようとするもの（次号において「重要部分承継会社」という。）に限る。）の当該分割の対象部分に係る国内売上高が百億円を下回らない範囲内において政令で定める金額を超え、かつ、分割によつて事業を承継しようとする会社に係る国内売上高合計額が五十億円を下回らない範囲内において政令で定める金額を超えるとき。
  <sup>art-15-2/par-3/item-3 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-3</sup>
  the domestic sales of any one of the companies that intend to become parties to the absorption-type split (limited to a company that intends to alienate a substantial part of its business through the absorption-type split (referred to in the following item as a "substantial part succession company")), in connection with the part of the business to be alienated, exceeds the amount specified by Cabinet Order, which must be no less than ten billion yen, and the total domestic sales amount of the company that intends to succeed to the business through such a split exceeds the amount specified by Cabinet Order, which must be no less than five billion yen; or
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

  **四**  当該吸収分割をしようとする会社のうち、分割をしようとするいずれか一の会社（重要部分承継会社に限る。）の当該分割の対象部分に係る国内売上高が三十億円を下回らない範囲内において政令で定める金額を超え、かつ、分割によつて事業を承継しようとする会社に係る国内売上高合計額が二百億円を下回らない範囲内において政令で定める金額を超えるとき（前号に該当するときを除く。）。
  <sup>art-15-2/par-3/item-4 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-4</sup>
  the domestic sales of any one of the companies that intend to become parties to the absorption-type split (limited to a substantial part succession company), in connection with the part of the business to be alienated, exceeds the amount specified by Cabinet Order, which must be no less than three billion yen, and the total domestic sales amount of the company that intends to succeed to the business through the split exceeds the amount specified by Cabinet Order, which must be no less than twenty billion yen (excluding cases that fall under the previous item).
  <sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

**第四項**  第十条第八項から第十四項までの規定は、前二項の規定による届出に係る共同新設分割及び吸収分割の制限並びに公正取引委員会がする第十七条の二第一項の規定による命令について準用する。この場合において、第十条第八項及び第十項から第十四項までの規定中「株式の取得」とあるのは「共同新設分割又は吸収分割」と、同条第九項中「株式の取得」とあるのは「共同新設分割又は吸収分割」と、「が株式取得会社」とあるのは「が共同新設分割をしようとし、又は吸収分割をしようとする会社のうち少なくとも一の会社」と、「、株式取得会社」とあるのは「、共同新設分割をしようとし、又は吸収分割をしようとする会社」と読み替えるものとする。
<sup>art-15-2/par-4 · https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-4</sup>
The provisions of Article 10, paragraphs (8) through (14) apply mutatis mutandis to the restriction of joint incorporation-type splits and absorption-type splits under a notification pursuant to the provisions of the two preceding paragraphs and to the orders made by the Japan Fair Trade Commission pursuant to the provisions of Article 17-2, paragraph (1). In this case, the term "acquire the shares" in Article 10, paragraph (8) and paragraphs (10) through (14) is deemed to be replaced with "become a party to the joint incorporation-type split or to the absorption-type split"; in paragraph (9) of the Article, the terms "share acquisition" and "acquisition of shares" are deemed to be replaced with "joint incorporation-type split or absorption-type split"; the term "requested the share acquiring company" is deemed to be replaced with "requested at least one of the companies intending to become parties to the joint incorporation-type split or to the absorption-type split"; and the term "notify the share acquiring company" is deemed to be replaced with "notify the company intending to be a party to the joint incorporation-type split or to the absorption-type split".
<sup>Ministry of Justice translation — Japanese Law Translation Database System</sup>

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## Cites
- art-15-2/par-2/item-1: この項 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第二項 (Article 15-2, paragraph (2)), art-15-2/par-2 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2
- art-15-2/par-2/item-2: この項 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第二項 (Article 15-2, paragraph (2)), art-15-2/par-2 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2
- art-15-2/par-2/item-3: 前号 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第二項第二号 (Article 15-2, paragraph (2), item (ii)), art-15-2/par-2/item-2 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-2
- art-15-2/par-3/item-1: 次号 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第二号 (Article 15-2, paragraph (3), item (ii)), art-15-2/par-3/item-2 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-2
- art-15-2/par-3/item-2: 前号 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第一号 (Article 15-2, paragraph (3), item (i)), art-15-2/par-3/item-1 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-1
- art-15-2/par-3/item-3: 次号 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第四号 (Article 15-2, paragraph (3), item (iv)), art-15-2/par-3/item-4 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-4
- art-15-2/par-3/item-4: 前号 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第三号 (Article 15-2, paragraph (3), item (iii)), art-15-2/par-3/item-3 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-3
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第十項 (Article 10, paragraph (10)), art-10/par-10 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-10
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第十一項 (Article 10, paragraph (11)), art-10/par-11 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-11
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第十二項 (Article 10, paragraph (12)), art-10/par-12 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-12
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第十三項 (Article 10, paragraph (13)), art-10/par-13 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-13
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第十四項 (Article 10, paragraph (14)), art-10/par-14 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-14
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第八項 (Article 10, paragraph (8)), art-10/par-8 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-8
- art-15-2/par-4: 第十条第八項から第十四項まで → 私的独占の禁止及び公正取引の確保に関する法律 第十条第九項 (Article 10, paragraph (9)), art-10/par-9 — https://japanlaw.org/ja/antimonopoly-act/art-10/par-9
- art-15-2/par-4: 前二項 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第二項 (Article 15-2, paragraph (2)), art-15-2/par-2 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2
- art-15-2/par-4: 前二項 → 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項 (Article 15-2, paragraph (3)), art-15-2/par-3 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3
- art-15-2/par-4: 第十七条の二第一項 → 私的独占の禁止及び公正取引の確保に関する法律 第十七条の二第一項 (Article 17-2, paragraph (1)), art-17-2/par-1 — https://japanlaw.org/ja/antimonopoly-act/art-17-2/par-1

## Cited by

15 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 第十五条の二第二項第一号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-1
- 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第二項第二号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-2/item-2
- 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第二項第三号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/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 第十五条の二第三項第一号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-1
- 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第二号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-2
- 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第三号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-3
- 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第三項第四号 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-3/item-4
- 私的独占の禁止及び公正取引の確保に関する法律 第十五条の二第四項 — https://japanlaw.org/ja/antimonopoly-act/art-15-2/par-4
- 私的独占の禁止及び公正取引の確保に関する法律 第十七条第一項 — https://japanlaw.org/ja/antimonopoly-act/art-17/par-1
- 私的独占の禁止及び公正取引の確保に関する法律 第十七条の二第一項 — https://japanlaw.org/ja/antimonopoly-act/art-17-2/par-1
- 私的独占の禁止及び公正取引の確保に関する法律 第十八条第二項 — https://japanlaw.org/ja/antimonopoly-act/art-18/par-2
- 私的独占の禁止及び公正取引の確保に関する法律 第四十八条の二第一項 — https://japanlaw.org/ja/antimonopoly-act/art-48-2/par-1
- 私的独占の禁止及び公正取引の確保に関する法律 第七十条の四第一項 — https://japanlaw.org/ja/antimonopoly-act/art-70-4/par-1
- 私的独占の禁止及び公正取引の確保に関する法律 第九十一条の二第一項第七号 — https://japanlaw.org/ja/antimonopoly-act/art-91-2/par-1/item-7
- 私的独占の禁止及び公正取引の確保に関する法律 第九十一条の二第一項第八号 — https://japanlaw.org/ja/antimonopoly-act/art-91-2/par-1/item-8

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## 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