The Nintendo Switch certainly isn't the first gaming tablet, but is it directly riffing on others' ideas? Gamevice thinks so. The accessory maker is suing Nintendo for allegedly violating a patent for concepts used in the Wikipad, its gaming-oriented Android slate, as well as its namesake add-on controllers for phones and tablets. According to the suit, the Switch and its removable Joy-Con controllers are too close to Gamevice's vision of a combination of detachable game controller and a device with a "flexible bridge section." Not surprisingly, the lawsuit calls for both damages and a ban on Switch sales.