https://www.polygon.com/2018/5/6/17324594/nintendo-switch-sued-patent-infringement-gamevice

Nintendo is being sued again by Gamevice on the claim the design of the Nintendo Switch and its Joy-Con controllers infringes the design of Gamevice patents for controllers that also slide onto handheld gaming devices.

Additionally, Reuters on Tuesday reported that Gamevice had lodged a complaint against Nintendo with the U.S. International Trade Commission. In a statement, the ITC said it had begun an investigation into “certain portable gaming console systems with attachable handheld controllers and components,” naming Nintendo.