Example: #16Lucky 1317
Has someone used your logo in a way you don't approve? That's an example of #stealing a trademark.
Avoid Infringement: Setting up #Google alerts for a #brand (and using a #socialmedia #monitoring company like Mention.com) can help check if a company name has been referenced and a trademark used. (Checking whether the use is permitted will likely require a human's judgment.)
Registering a trademark with U.S. #government long before a problem arises will also help strengthen any trademark infringement case.
Hire an Attorney? A #lawyer with trademark experience can help decide if it makes sense to pursue #legal action. Remember, if the infringer has no money it can be tough to recoup legal funds.