OSS Japanese resources

by mikilight1 in September 21st, 2021

Yesterday I researched OSS under Japanese law. Surprisingly, a couple of documentation developed by the Japanese government, such as the Ministry of Economy, Trade, and Industry, and Japan Patent Office, and some industry associations such as SOFTIC. That documentation would keep making practitioners' jobs much more straightforward. To begin with this blog, I would like to thank all stakeholders for creating those documentations.

The purpose of this blog is to map out those documentations for those who would like to learn about OSS under Japanese law.

For non-Japanese speakers/users, the documents introduced on this blog are written in Japanese. Translation tools such as Deep L and GoogleTranslate may assist you in understanding the contents.

Note: The author made the English translation of the document titles for readers' convenience. Please feel free to feedback if any updates and modifications are necessary.


IoT 時代におけるOSS の利用と法的諸問題Q&A 集, SOFTIC, 2018

Q&A: Use and legal issues of OSS in the IoT era


These Q&As are written by lawyers and in-house legal and IP practitioners in large Japanese corporations. This Q&A covers almost all the issues that the practitioners can come up with under Japanese law. It begins with what OSS is. It shares various perspectives to face with OSS, such as when using OSS in combination with your proprietary software to offering your software as OSS, support, security, and liability when the vendor chooses OSS and waiver in relation with product liability.



Information about OSS License


The web page provided by IPA covers nuts and bolts about OSS.

The last update of this page is 2011. It is already ten years old, but the commentary of GPLv3 is fascinating —- it is very detailed.

Use cases

Japan Patent Office

デジタル化、IoT 化時代におけるオープンソースソフトウェアに係る知財リスク等に関する調査研究報告書 (PwC)

Research about IP risks, etc. regarding Open Source Software in the era of digital and IoT (PwC)


This research aims to raise awareness of the management level of corporations unfamiliar with OSS and help them allocate human and monetary resources to increase their competitiveness in the market.

It takes the vertical and regional approaches and is helpful for readers to understand the OSS in use cases in each industry and region.


OSS の利活用及びそのセキュリティ確保に向けた管理手法に関する事例集

Case study regarding promotion of OSS use and management for ensuring security


This case study covers use cases of OSS by large Japanese organizations such as Toyota, Sony, Olympus, Hitachi, Toshiba. METI recognizes the significance of OSS in the industry and organized this study to share practice in the organizations. It seems to be very helpful to learn about organizational design to promote OSS in your organization.

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