Defending a trademark is a waste of time. Using them as a deterrent is a nice to have, in your key markets. But if someone challenged that by using a similar

Defending a trademark is a waste of time. Using them as a deterrent is a nice to have, in your key markets. But if someone challenged that by using a similar name or casually turning your trademark into a verb, it becomes a war of attrition that you win by never playing.