On August 4, 2021, Nintendo Co., Ltd. and Coropla Inc. announced that they have agreed to settle a patent infringement lawsuit regarding Coropla's game application for smart devices, "Shirokane Project.

In January 2018, Nintendo sued Colopl for patent infringement on some of the controls of the game "Shiroko Project".
Nintendo withdrew the lawsuit by paying a settlement of 3.3 billion yen, including future licensing.
Six patents are the subject of the settlement:
Japanese Patent No. 3734820, 4262217, 4010533, 5595991, 3637031 and 6271692.