We’re building a SaaS website and are slowly getting people to use it, however we do not yet make money off of it. We secured an .io domain because the .com etc. are being squatted. When we chose our name in Fall of last year there were no registered trademarks in the US, but two unrelated ones in our home market (EU). In the meantime someone in the states registered a trademark using the same name for a mobile app / social network in the same general field, but we’re not competition. We registered our domain before them and our website was online before them, we just weren’t sure how things would pan out and therefore didn’t want to invest a (to us) considerable amount of money for a trademark we may never need.
As some promising clients are on the horizon the question of trademark was raised once again. So we were considering protecting our name in EU (not sure if it’s possible to register the name again in the states with the existing trademark). Should we do it, or not?