For some documents including documents supporting an argument asserting exception to lack of novelty and documents used for a priority claim, submission can now be made directly to WIPO through eHague in international design applications designating Japan as of October 2021.

This change in protocol gives applicants another option of when and where to submit these documents.

If you are considering filing international design applications designating Japan, please feel free to contact us. We would be pleased to assist you.

source:
https://www.wipo.int/hague/en/news/2021/article_0026.html