On April 28, 2022, the JPO published a collection of cases in which crowdfunding companies have registered designs, as well as information on what to look out for when registering designs.
It details six real-life cases and provides specific solutions with three points that need attention.
Japan Patent Office
https://www.jpo.go.jp/system/design/gaiyo/info/document/crowdfunding-jirei-20220422.pdf