Coinlab won't have a basis to sue you for trademark infringement unless you try to rip off their logo or something that legitimately threatens their business. I think they just received $5 million in VC funding, so their probably focused on other things right now.
coinlab could point to its visibility, and argue that labcoin is attempting to mislead, and is diluting mindshare and goodwill of with the coinlab brand. or something like that. can you tell i'm just trying to use up my newbie posts.