Trademarks are not limited to just one per word/phrase but instead based on classes (categories). It's possible for someone to have a TUVW as a software progra

Trademarks are not limited to just one per word/phrase but instead based on classes (categories). It's possible for someone to have a TUVW as a software program and also a TUVW pharmaceutical drug. I've got a similar case with one of my software programs where there is a similar trademark related to a plant seed. If there's another trademark in the same class as your product, then simply adding Online may be a tough sell. However with today's legal system and intellectual property rights, it's not always a case of who is right but rather who has deeper pockets. You'd definitely be advised to talk with an intellectual property lawyer if there is a possible concern. Also simply owning a domain name that displays ads or otherwise doesn't have a full business is not necessarily cybersquatting. "Squatting, or cybersquatting, is registering, trafficking in, or using a domain name with bad faith intent to profit from the goodwill of a trademark belonging to someone else" [1]. If anything you may could be considered a cybersquatter if you registered TUVWOnline.com and attempted to benefit from TUVW's trademark. I know that's not your intention because you are asking how to stay legitimate here on HN but the mislabeling of cybersquatting is a pet peeve. [1]http://en.wikipedia.org/wiki/Cybersquatting http://en.wikipedia.org/wiki/Cybersquatting