# 不正競争防止法 / Unfair Competition Prevention Act — 第四条 (Article 4) - Law: 不正競争防止法 (Unfair Competition Prevention Act), 平成五年法律第四十七号 - English title "Unfair Competition Prevention Act": 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 (Article 4)（損害賠償） — address `art-4` - Text in force since: 2026-05-21 - URL (the page that opens at this provision): https://japanlaw.org/ja/unfair-competition-prevention-act/art-4 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/405AC0000000047/art-4 - Every provision below carries its address and both URLs 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（損害賠償） — (Compensation for Loss or Damage) caption: Ministry of Justice translation — Japanese Law Translation Database System art-4 · https://japanlaw.org/ja/unfair-competition-prevention-act/art-4 · https://japanlaw.org/l/405AC0000000047/art-4 **第一項** 故意又は過失により不正競争を行って他人の営業上の利益を侵害した者は、これによって生じた損害を賠償する責めに任ずる。ただし、第十五条の規定により同条に規定する権利が消滅した後にその営業秘密又は限定提供データを使用する行為によって生じた損害については、この限りでない。 art-4/par-1 · https://japanlaw.org/ja/unfair-competition-prevention-act/art-4/par-1 · https://japanlaw.org/l/405AC0000000047/art-4/par-1 A person that intentionally or negligently commits an infringement that harms the business interests of another person through unfair competition is liable to compensate for any loss or damage resulting from it; provided, however, that this Article does not apply to loss or damage resulting from the use of trade secrets or shared data with limited access after the rights prescribed in Article 15 have extinguished pursuant to that Article. Ministry of Justice translation — Japanese Law Translation Database System --- ## Cites - art-4/par-1: 第十五条 → 不正競争防止法 第十五条 (Article 15), art-15 — https://japanlaw.org/ja/unfair-competition-prevention-act/art-15 · https://japanlaw.org/l/405AC0000000047/art-15 ## Cited by 5 provisions cite this one. No official source publishes this direction. - 不正競争防止法 第十九条第一項（適用除外等） — https://japanlaw.org/ja/unfair-competition-prevention-act/art-19/par-1 · https://japanlaw.org/l/405AC0000000047/art-19/par-1 - 不正競争防止法 附則第三条第一項 — https://japanlaw.org/ja/unfair-competition-prevention-act/suppl-4051-47/art-3/par-1 · https://japanlaw.org/l/405AC0000000047/suppl-4051-47/art-3/par-1 - 不正競争防止法 附則第四条第一項 — https://japanlaw.org/ja/unfair-competition-prevention-act/suppl-4051-47/art-4/par-1 · https://japanlaw.org/l/405AC0000000047/suppl-4051-47/art-4/par-1 - 不正競争防止法 附則第二条第一項（不正競争防止法の一部改正に伴う経過措置） — https://japanlaw.org/ja/unfair-competition-prevention-act/suppl-4301-33/art-2/par-1 · https://japanlaw.org/l/405AC0000000047/suppl-4301-33/art-2/par-1 - 不正競争防止法 附則第二条第一項（不正競争防止法の一部改正に伴う経過措置） — https://japanlaw.org/ja/unfair-competition-prevention-act/suppl-5051-51/art-2/par-1 · https://japanlaw.org/l/405AC0000000047/suppl-5051-51/art-2/par-1 --- ## Sources - e-Gov 法令検索, Digital Agency (デジタル庁) — 不正競争防止法 — the text in force from 2026-05-21 (https://laws.e-gov.go.jp/law/405AC0000000047/20260521_507AC0000000039), retrieved 2026-10-11 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Unfair Competition Prevention Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4920/tb), retrieved 2026-10-11 - This site's parser, version 189 — 不正競争防止法 — structure, counts, cross-references and defined terms, computed 2026-10-11