Nintendo sure doesn’t like competition: the console maker has sued third-party accessory manufacturer Nyko, claiming that the company’s line of Wii Kama Wireless Nunchuks violate trademarks and patents by Nintendo. The lawsuit alleges that Nyko “wholly appropriates the novel shape, design, overall appearance and even the color and materials used in the Nintendo Nunchuk controller.”

“We have not knowingly violated anyone’s intellectual property and we’re still examining this,” commented Nyko representative C.C. Swiney.

Nintendo itself creates Nunchuks which can be connected to the Wii Remote with a wire to provide more buttons and also act as an analog stick. The Nyko one connected to the Wii Remote wirelessly.