Complaining that Mad Dogg Athletics has been “abusively enforcing” the trademarks it registered in the U.S. for Spin and Spinning, Peloton has asked the Trademark and Appeal Board of the U.S. Patent & Trademark Office (USPTO) to cancel them. Peloton argues that the terms are generic and complains that Mad Dogg has been harassing other companies that sell indoor bicycles. Mad Dogg claims tht its two founders, John Baudhuin and Johnny Goldberg, created indoor spinning in the early 1990s. The company sued Peloton in December, accusing it of infringing on two indoor bike patents. Peloton has not yet responded to this move, but has acquired in the meantime Precor, which is the authorized manufacturer of Mad Dogg’s Spinner branded bikes, from Amer Sports.