Perplexity AI Faces Lawsuit in Japan Over Copyright Infringement

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Yomiuri Shimbun and other Japanese newspapers have sued US-based AI company Perplexity, alleging its generative AI system used their articles without permission, violating copyright laws. The lawsuit, filed in Tokyo District Court, seeks an injunction and damages of about 2.1 billion yen. Perplexity disputes the claims.[AI generated]

Why's our monitor labelling this an incident or hazard?

The event involves an AI system (a generative AI search service) whose use has allegedly led to a violation of intellectual property rights, a recognized harm under the AI Incident definition. Since the unauthorized reproduction and transmission of copyrighted content has already occurred and is the subject of a lawsuit, this constitutes an AI Incident rather than a hazard or complementary information.[AI generated]
AI principles
AccountabilityTransparency & explainability

Industries
Media, social platforms, and marketingConsumer services

Affected stakeholders
Business

Harm types
Economic/Property

Severity
AI incident

Business function:
Citizen/customer service

AI system task:
Content generation


Articles about this incident or hazard

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AI検索パープレキシティ、読売新聞とも争う姿勢 記事無断利用で初弁論

2026-05-26
日本経済新聞
Why's our monitor labelling this an incident or hazard?
The event involves an AI system (a generative AI search service) whose use has allegedly led to a violation of intellectual property rights, a recognized harm under the AI Incident definition. Since the unauthorized reproduction and transmission of copyrighted content has already occurred and is the subject of a lawsuit, this constitutes an AI Incident rather than a hazard or complementary information.
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生成AI検索サービスで読売新聞の記事を無断利用、米新興企業は争う姿勢...第1回口頭弁論で却下求める

2026-05-26
読売新聞オンライン
Why's our monitor labelling this an incident or hazard?
The event involves the use of a generative AI system that reproduces and outputs content derived from copyrighted newspaper articles without authorization, directly infringing on intellectual property rights. The lawsuit claims economic damages and seeks injunctions, indicating realized harm. The AI system's use is central to the incident, fulfilling the criteria for an AI Incident involving violation of intellectual property rights. Although the case is in litigation and no final judgment is reported, the harm is ongoing and directly linked to the AI system's use.
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「AI検索で著作権侵害」読売新聞が訴え パープレキシティ争う姿勢:朝日新聞

2026-05-26
朝日新聞デジタル
Why's our monitor labelling this an incident or hazard?
The event involves the use of an AI system (a generative AI search service) that has directly led to a violation of intellectual property rights through unauthorized reproduction and use of copyrighted articles. This fits the definition of an AI Incident because the AI system's use has caused a breach of applicable law protecting intellectual property rights, and the harm (copyright infringement) has already occurred and is the subject of legal action.
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米パープレキシティ、争う姿勢 読売新聞記事の無断使用、初弁論

2026-05-26
西日本新聞ニュース
Why's our monitor labelling this an incident or hazard?
The event involves an AI system (a generative AI that collects information and creates responses) whose use has directly led to a violation of copyright law, a breach of intellectual property rights. This constitutes harm (c) under the AI Incident definition. The lawsuit and legal proceedings are a response to this harm. Therefore, this qualifies as an AI Incident rather than a hazard or complementary information.
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米パープレキシティ、争う姿勢 読売新聞記事の無断使用、初弁論

2026-05-26
神戸新聞
Why's our monitor labelling this an incident or hazard?
The event involves an AI system (Perplexity's generative AI) that uses copyrighted content without permission, leading to alleged copyright infringement. This is a direct violation of intellectual property rights, which is one of the harms defined under AI Incidents. The legal action and claims of damages indicate that harm has materialized, not just a potential risk. Therefore, this event qualifies as an AI Incident.
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米パープレキシティ、争う姿勢|埼玉新聞|埼玉の最新ニュース・スポーツ・地域の話題

2026-05-26
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Why's our monitor labelling this an incident or hazard?
The AI system (Perplexity's generative AI) is explicitly involved in creating responses that use copyrighted content without authorization, directly leading to a legal claim for copyright infringement. This is a violation of intellectual property rights, which falls under harm category (c) in the AI Incident definition. Therefore, this event qualifies as an AI Incident.
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米パープレキシティ、争う姿勢/読売新聞記事の無断使用、初弁論 | 四国新聞社

2026-05-26
四国新聞社
Why's our monitor labelling this an incident or hazard?
The event involves an AI system (Perplexity's generative AI) that uses real-time information from the internet to generate content, including news articles. The plaintiffs claim that this use infringes on their copyright, constituting a violation of intellectual property rights, which is a form of harm under the AI Incident definition. Since the harm (copyright infringement) has occurred and legal action is underway, this qualifies as an AI Incident rather than a hazard or complementary information. The AI system's use directly led to the alleged harm, fulfilling the criteria for an AI Incident.