https://www.techdirt.com/articles/20210217/07425646259/peloton-seeks-to-invalidate-spinning-trademark-held-trademark-bully.shtml

Back in 2010, we discussed that the at-the-time "spin class" craze in the fitness world was encountering the fact that one company, Mad Dogg Athletics, held a trademark on the term "spinning" for use in the fitness industry. Mad Dogg had taken to going around the world and threatening anyone else using the term with trademark infringement as a result. And, to be clear, they had a lot of targets for these threats, which factored into the argument that term was now generic and hadn't been properly enforced as a trademark for years.

Since 2010, the spin class craze has morphed out of the brick and mortar gym and into home fitness, with the current fad being app-driven home stationary spin bikes. The leader in that field is, of course, Peloton. Mad Dogg sued Peloton for trademark infringement last year over patents it holds for core features of its bikes. In what may be something of a clap back in that dispute, however, Peloton has now petitioned to have Mad Dogg's "spinning" trademark canceled entirely.