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Patolis Corp. is a private company that produces Japanese patent data. The service is a notable source for Japanese legal status data. Patolis data used to be accessible on the web via PATOLIS-e, but that service closed in September of 2006, leaving Questel and the European Patent Office as portals to the legal status data, and Questel as a host for the electronic data.

When it was available online, the data provided by Patolis was also indexed by English keyword.

The service should not be confused with Patent Abstracts of Japan (PAJ), produced by the JAPIO corporation.

Bankruptcy and Re-organization

In July 2009 a notice of bankruptcy/re-organization (under a Japanese law similar to the US Chapter 11 bankruptcy law) was posted on the Patolis website in Japanese only. An unofficial translation of this notice appears below.


Press Release by PATOLIS Corporation
July 17, 2009

RE: Filing a Petition for Corporate Reorganization Law

July 17, 2009 – PATOLIS Corporation (“PATOLIS”) has filed a petition for Corporate Reorganization Law in Tokyo District Court on July 17th, 2009.

As before, PATOLIS will continue to provide its service to our users without any disruption even with a petition for Corporate Reorganization Law. We sincerely appreciate your understanding of our position to file a petition for Corporate Reorganization, and thank you for your kind cooperation and support.

Should you have questions, please do not hesitate to contact us.

Contact Information (regarding this matter)
Planning Administration Group: Kotaro Asanuma
Tel. +81-3-5690-5555

Sumio Kanero
PATOLIS Corporation

On July 24, Renaud Garat of Questel posted to the PIUG wiki that Questel would continue to provide uninterrupted access to Patolis data.[1]


  1. Garat, Renaud. "PATOLIS-E ACCESS." Post to PIUG wiki. Accessed July 24, 2009.

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