Depends on the adjective. If "Hot Pizza" is granted (it seems to just be an application), which I doubt because that does sound really generic, then probably no

Depends on the adjective. If "Hot Pizza" is granted (it seems to just be an application), which I doubt because that does sound really generic, then probably nobody will be granted "Warm Pizza" or "Sizzling Pizza" because that sounds similar enough to cause confusion. Likelihood of confusion is the acid test for trademark infringement: https://en.wikipedia.org/wiki/Trademark_infringement https://en.wikipedia.org/wiki/Trademark_infringement Also, preventing others from competing with you is completely irrelevant to trademarks. That's more something like what patents do. As far as trademarks go, you can compete all you want, just make sure you don't portray yourself as having the same name as your competitor.