Where can I find legal status information on Japanese patents in English?

You can find basic legal status information on Japanese documents free of charge via the Japan Platform for Patent Information (J-PlatPat) of the Japan Patent Office.  For each IP right, J-PlatPat offers a summary of the most important legal status events up to grant or refusal, in chronological order. You can find a step-by-step guide on how to retrieve legal status information in J-PlatPat on our website.