# 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 — 第八十一条 (Article 81) This is the Markdown twin of https://japanlaw.org/ja/antimonopoly-act/art-81. 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: 第八十一条 (Article 81) — address `art-81` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/ja/antimonopoly-act/art-81 - 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. --- ### 第八十一条 art-81 · https://japanlaw.org/ja/antimonopoly-act/art-81 **第一項** 裁判所は、第二十四条の規定による侵害の停止又は予防に関する訴訟において、その当事者が保有する営業秘密（不正競争防止法（平成五年法律第四十七号）第二条第六項に規定する営業秘密をいう。以下同じ。）について、次に掲げる事由のいずれにも該当することにつき疎明があつた場合には、当事者の申立てにより、決定で、当事者等、訴訟代理人又は補佐人に対し、当該営業秘密を当該訴訟の追行の目的以外の目的で使用し、又は当該営業秘密に係るこの項の規定による命令を受けた者以外の者に開示してはならない旨を命ずることができる。ただし、その申立ての時までに当事者等、訴訟代理人又は補佐人が第一号に規定する準備書面の閲読又は同号に規定する証拠の取調べ若しくは開示以外の方法により当該営業秘密を取得し、又は保有していた場合は、この限りでない。 art-81/par-1 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-1 In an action to suspend or prevent an infringement under the provisions of Article 24, if a prima facie showing of both of the following grounds has been made with regard to a trade secret (meaning a trade secret as provided in Article 2, paragraph (6) of the Unfair Competition Prevention Act (Act No. 47 of 1993); the same applies hereinafter) held by a party to the action, the court may order the parties, etc., counsel, or an assistant not to use the trade secret for any purpose other than pursuing the action, and not to disclose the trade secret to anyone other than a person subject to the order prescribed in this paragraph provided, however, that this does not apply if the party, etc., counsel, or the assistant had already acquired or held the trade secret by means other than reading the brief prescribed in item (i) or through the examination or disclosure of evidence prescribed in the same item: Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "In an action to suspend or prevent an infringement under the provisions of Article 24, if a prima facie showing both of the following grounds has been made with regard to a trade secret (meaning a trade secret as provided in Article 2, paragraph (6) of the Unfair Competition Prevention Act (Act No. 47 of 1993); the same applies hereinafter) held by a party to the action, the court may order the parties, etc., counsel, or an assistant not to use the trade secret for any purpose other than pursuing the action, and not to disclose the trade secret to anyone other than a person subject to the order prescribed in this paragraph provided, however, that this does not apply if the party, etc., counsel, or the assistant had already acquired or held the trade secret by means other than reading the brief prescribed in item (i) or through the examination or disclosure of evidence prescribed in the same item:" — https://www.japaneselawtranslation.go.jp/en/laws/view/5212/tb **一** 既に提出され、若しくは提出されるべき準備書面に当事者の保有する営業秘密が記載され、又は既に取り調べられ、若しくは取り調べられるべき証拠（前条第三項の規定により開示された書類又は電磁的記録を含む。）の内容に当事者の保有する営業秘密が含まれること。 art-81/par-1/item-1 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-1/item-1 the trade secret held by the party, is written in an already-produced or to-be-produced brief, or included in the contents of already-examined or to-be-examined evidence (including documents or electronic or magnetic records disclosed pursuant to the provisions of paragraph (3) of the preceding Article); and Ministry of Justice translation — Japanese Law Translation Database System **二** 前号の営業秘密が当該訴訟の追行の目的以外の目的で使用され、又は当該営業秘密が開示されることにより、当該営業秘密に基づく当事者の事業活動に支障を生ずるおそれがあり、これを防止するため当該営業秘密の使用又は開示を制限する必要があること。 art-81/par-1/item-2 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-1/item-2 the party's business activities based on the trade secret under the preceding item are likely to be hindered by the use of the relevant trade secret for a purpose other than conduct of suit or its disclosure, and it is necessary to restrict the use or disclosure of the trade secret in order to prevent this. Ministry of Justice translation — Japanese Law Translation Database System **第二項** 前項の規定による命令（以下「秘密保持命令」という。）の申立ては、次に掲げる事項を記載した書面でしなければならない。 art-81/par-2 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-2 A petition for the order prescribed in the preceding paragraph (hereinafter referred to as the "protective order") must be in writing and include the following matters: Ministry of Justice translation — Japanese Law Translation Database System **一** 秘密保持命令を受けるべき者 art-81/par-2/item-1 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-2/item-1 a person to whom the protective order is to be issued; Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "a person to whom the protective order to be issued;" — https://www.japaneselawtranslation.go.jp/en/laws/view/5212/tb **二** 秘密保持命令の対象となるべき営業秘密を特定するに足りる事実 art-81/par-2/item-2 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-2/item-2 facts that are sufficient for identifying the trade secret to be the subject to the protective order; and Ministry of Justice translation — Japanese Law Translation Database System **三** 前項各号に掲げる事由に該当する事実 art-81/par-2/item-3 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-2/item-3 facts that fall under the grounds listed in each of the items of the preceding paragraph. Ministry of Justice translation — Japanese Law Translation Database System **第三項** 秘密保持命令が発せられた場合には、その電子決定書（民事訴訟法第百二十二条において準用する同法第二百五十二条第一項の規定により作成された電磁的記録（同法第百二十二条において準用する同法第二百五十三条第二項の規定により裁判所の使用に係る電子計算機に備えられたファイルに記録されたものに限る。）をいう。以下同じ。）を秘密保持命令を受けた者に送達しなければならない。 art-81/par-3 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-3 When the court issues a protective order, it must serve an electronic decision (meaning an electronic or magnetic record prepared pursuant to the provisions of the Article 252, paragraph (1) of the Code of Civil Procedure as applied mutatis mutandis pursuant to the provisions of the Article 122 of the Code (limited to one that is recorded in a file stored on a computer used by the court pursuant to the provisions of the Article 253, paragraph (2) of the Code as applied mutatis mutandis pursuant to the provisions of the Article 122 of the Code); the same applies hereinafter) on the person to whom the protective order was issued. Ministry of Justice translation — Japanese Law Translation Database System **第四項** 秘密保持命令は、秘密保持命令を受けた者に対する電子決定書の送達がされた時から、効力を生ずる。 art-81/par-4 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-4 A protective order takes effect when an electronic decision is served on the person to whom the protective order was issued. Ministry of Justice translation — Japanese Law Translation Database System **第五項** 秘密保持命令の申立てを却下した裁判に対しては、即時抗告をすることができる。 art-81/par-5 · https://japanlaw.org/ja/antimonopoly-act/art-81/par-5 If the court dismisses a petition for a protective order, the party may lodge an immediate appeal against the decision. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-81/par-1: 第二十四条 → 私的独占の禁止及び公正取引の確保に関する法律 第二十四条 (Article 24), art-24 — https://japanlaw.org/ja/antimonopoly-act/art-24 - art-81/par-1: 不正競争防止法（平成五年法律第四十七号）第二条第六項 → 不正競争防止法 第二条第六項 (Article 2, paragraph (6)), art-2/par-6 — https://japanlaw.org/ja/unfair-competition-prevention-act/art-2/par-6 (e-Gov law ID 405AC0000000047) - art-81/par-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 第八十一条第一項 (Article 81, paragraph (1)), art-81/par-1 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1 - art-81/par-1: 第一号 → 私的独占の禁止及び公正取引の確保に関する法律 第八十一条第一項第一号 (Article 81, paragraph (1), item (i)), art-81/par-1/item-1 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1/item-1 - art-81/par-1/item-1: 前条第三項 → 私的独占の禁止及び公正取引の確保に関する法律 第八十条第三項 (Article 80, paragraph (3)), art-80/par-3 — https://japanlaw.org/ja/antimonopoly-act/art-80/par-3 - art-81/par-1/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 第八十一条第一項第一号 (Article 81, paragraph (1), item (i)), art-81/par-1/item-1 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1/item-1 - art-81/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 第八十一条第一項 (Article 81, paragraph (1)), art-81/par-1 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1 - art-81/par-2/item-3: 前項 → 私的独占の禁止及び公正取引の確保に関する法律 第八十一条第一項 (Article 81, paragraph (1)), art-81/par-1 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1 - art-81/par-3: 民事訴訟法第百二十二条 → 民事訴訟法 第百二十二条 (Article 122), art-122 — https://japanlaw.org/ja/code-of-civil-procedure/art-122 (e-Gov law ID 408AC0000000109) - art-81/par-3: 同法第二百五十二条第一項 → 民事訴訟法 第二百五十二条第一項 (Article 252, paragraph (1)), art-252/par-1 — https://japanlaw.org/ja/code-of-civil-procedure/art-252/par-1 (e-Gov law ID 408AC0000000109) - art-81/par-3: 同法第二百五十三条第二項 → 民事訴訟法 第二百五十三条第二項 (Article 253, paragraph (2)), art-253/par-2 — https://japanlaw.org/ja/code-of-civil-procedure/art-253/par-2 (e-Gov law ID 408AC0000000109) ## Cited by 9 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 第七十条の九第一項 — https://japanlaw.org/ja/antimonopoly-act/art-70-9/par-1 - 私的独占の禁止及び公正取引の確保に関する法律 第八十条第三項 — https://japanlaw.org/ja/antimonopoly-act/art-80/par-3 - 私的独占の禁止及び公正取引の確保に関する法律 第八十一条第一項 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1 - 私的独占の禁止及び公正取引の確保に関する法律 第八十一条第一項第二号 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-1/item-2 - 私的独占の禁止及び公正取引の確保に関する法律 第八十一条第二項 — https://japanlaw.org/ja/antimonopoly-act/art-81/par-2 - 私的独占の禁止及び公正取引の確保に関する法律 第八十一条第二項第三号 — https://japanlaw.org/ja/antimonopoly-act/art-81/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 第八十二条第一項 — https://japanlaw.org/ja/antimonopoly-act/art-82/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（文書提出命令の特則についての経過措置） — https://japanlaw.org/ja/antimonopoly-act/suppl-4211-51/art-15/par-1 - 私的独占の禁止及び公正取引の確保に関する法律 附則第三十四条第一項（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/ja/antimonopoly-act/suppl-5041-48/art-34/par-1 --- ## Sources - claude-opus-5-5 — Corrections to the Ministry of Justice's English of paragraphs, written 2026-11-06 - 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 (私的独占の禁止及び公正取引の確保に関する法律), Article 81, paragraph (1) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/5212/tb), 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 (私的独占の禁止及び公正取引の確保に関する法律), Article 81, paragraph (2), item (i) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/5212/tb), 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