I've received the following reply to one of my emails: There is no trademark registered under the keywords of the domain name. He is not the previous/current owner of the domain name, I registered it after doing an in depth research on it. So it's almost funny as he says "my .com name". The name is not even close with his business name / domain. The domain is representing an industry with hundreds of potential end users, his domain is a terrible brandable. I certainly haven't blackmailed him. Should I take it seriously or is this a bluff to get the domain name for free? Never run into a situation like this before despite the fact that I sell domains on a weekly basis via outbound. Advice would be appreciated.