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Nippan admits unit sold Japanese books to US AI firm Anthropic, publishers group told
En breve
Nippan Group Holdings has admitted to the Japan Book Publishers Association that a subsidiary sold Japanese books to the US AI developer Anthropic. In a written reply dated Oct 5, the distributor said the sales ran from December 2024 to December 2025 and that it did not recognize the purchases as being for AI training. Nippan did not disclose which publishers' books were sold, and publishers have voiced strong dissatisfaction, according to Japanese media.
Leer la noticia completa 2 min de lectura
Nippan Group Holdings, one of Japan's largest book distributors, has admitted that a subsidiary sold Japanese books to the US AI developer Anthropic, according to multiple publishing industry sources. The company gave the admission in a written reply dated Oct 5 to the Japan Book Publishers Association, the industry body known as Shokyo, which had asked it to confirm the facts. The Asahi Shimbun, the Yomiuri Shimbun and Nikkei all reported the admission. [ 1 , 2 , 3 , 4 ]
According to Nippan's explanation to the association, its overseas business arm, Nippan IPS, signed a transaction contract with Anthropic in November 2024 and sold books from December 2024 until December 2025. Nippan said it had confirmed the intended use with Anthropic before the contract was signed, but that the explanation it received at that time did not lead it to recognize the purchases as being for AI training. The company did not disclose which publishers' books or which titles were sold, saying it would respond to individual inquiries from publishers. [ 1 , 4 ]
The suspected sales came to light through US court documents. A copyright infringement lawsuit brought against Anthropic by US authors over the use of books from pirate sites for AI training was settled by July, and the records referred several times to a name given as “Nippan Japan”. Because the books sold may have been used for AI training, the reports say, anger spread in the publishing industry. [ 1 ]
The Japan Book Publishers Association, whose membership includes about 380 publishers, sent Nippan a written request for confirmation in September. The Yomiuri Shimbun reported that a subsidiary sold the books without permission and that Anthropic had been running a project to scan large numbers of books for AI training, with Japanese books potentially included; it also reported strong dissatisfaction among domestic publishers. The Asahi Shimbun and Nikkei did not state that permission was absent, describing the association as seeking confirmation of whether sales had taken place. [ 1 , 2 , 4 ]
Asked about its explanation to the association, Nippan told reporters it would refrain from answering questions about individual transactions. Its position, as reported, is that it will deal with publishers' questions case by case, leaving open how many member companies' titles were involved and how the books were used. [ 1 ]
Por qué importa
The admission puts a major Japanese book distributor at the centre of the global dispute over whether publishers and authors should consent to and be paid for the use of their works in AI training. It also puts pressure on the Japan Book Publishers Association, which represents about 380 publishers, to respond on behalf of members whose titles may have been included. Nippan says it will answer individual publishers' inquiries, so further disclosures could follow.
Datos clave
- Nippan Group Holdings admitted to the Japan Book Publishers Association that it sold Japanese books to the US AI developer Anthropic, according to multiple publishing industry sources. [ 1 , 2 , 3 , 4 ]
- The admission was made in a written reply dated Oct 5, after the association asked Nippan to confirm the facts. [ 1 , 4 ]
- According to Nippan's explanation, its overseas arm Nippan IPS signed a contract with Anthropic in November 2024 and sold books from December 2024 until December 2025. [ 1 ]
- Nippan said it had checked the purpose of use before signing the contract, but that the explanation it received did not lead it to recognize the purchases were intended for AI training. [ 1 , 4 ]
- Nippan did not disclose which publishers' books or which titles were sold, saying it would respond to individual inquiries from publishers. [ 1 ]
- The Japan Book Publishers Association, whose membership includes about 380 publishers, sent Nippan a written request for confirmation in September. [ 1 ]
- The suspected sales surfaced in US court documents from a copyright infringement lawsuit brought against Anthropic by US authors, which was settled by July; the documents referred several times to a name given as “Nippan Japan”. [ 1 ]
Confirmado por varias fuentes
- Nippan Group Holdings admitted to the Japan Book Publishers Association that it sold Japanese books to the US AI developer Anthropic. [ 1 , 2 , 3 , 4 ]
- The admission was made in writing, dated Oct 5. [ 1 , 4 ]
- The publishers association had sought confirmation of the facts from Nippan. [ 1 , 2 ]
- Nippan said it did not recognize the book purchases as being for AI training. [ 1 , 4 ]
Aún sin aclarar
- Which publishers' books and which specific titles were sold to Anthropic. Nippan did not disclose the details and said it would respond to individual inquiries from publishers.
- Whether the books were used for AI training. The documents say only that this was possible, not that it was established.
- Whether the sales were made without the publishers' permission. The Yomiuri Shimbun reported that a subsidiary sold the books “without permission”, while the Asahi Shimbun and Nikkei describe the association as seeking confirmation of whether the sales occurred, without stating that permission was absent.
- Details of the US lawsuit against Anthropic and the timing of the settlement. Only one document mentions the litigation, saying it was settled by July and that the court records referred to “Nippan Japan”.
Qué dicen los medios locales
Cronología, hora local
- Nippan IPS concludes a transaction contract with Anthropic, according to Nippan's explanation. [ 1 ]
- Sales of books to Anthropic begin, according to Nippan. [ 1 , 4 ]
- Sales of books to Anthropic end, according to Nippan. [ 1 , 4 ]
- A US copyright infringement lawsuit brought by US authors against Anthropic is settled, according to one report. [ 1 ]
- The Japan Book Publishers Association sends Nippan a written request to confirm the facts. [ 1 ]
- Nippan answers the association in writing, admitting the sales. [ 1 , 4 ]
- The Asahi Shimbun reports the admission, citing multiple publishing industry sources. [ 1 ]
- The Yomiuri Shimbun reports the sale and publishers' dissatisfaction. [ 2 ]
- Yahoo! News Japan carries a summary of the admission. [ 3 ]
- Nikkei reports the admission and the sales period. [ 4 ]