I registered a domain name, well call www.mydomainisgreat.com and applied for a TM; so far received a pseudo mark. At the same time, a large company with a domain name (www.mydomain.com) has sent me a complaint about my domain being confusingly similar and that I'm violating its mark. Thus far, we've traded letters back and forth. They demand I give them the domain, I am refusing. They're accusing me of infringement, cybersquatting and violating the Lanham act; stating I have no interest in the domain and I'm presenting it in bad faith. Through my research, I've determined that this 'to me' isn't the case, and I plan to fight this all the way through. I have full interest & no bad faith. Am I wrong? My site does mimic functionality of their site but is completely different in design.Now that I can add additional information I wanted to also say this. I've read a lot of cases in reference to this, but obviously I'm not a lawyer otherwise I wouldn't be here. But in my opinion, it seems they are just trying to squash the little guy and not allow any competition in the market. When I registered this domain name and the concept of the website, there was no bad faith intent. The website I've conceptualized is a local website for local businesses whereas the larger one is global. My website is completely different in its concept and design. Similarly, in the case of 24 Hour Fitness USA, Inc. v. 24/7 Tribeca Fitness, LLC (2006) the courts ruled in favor of the little guy stating that they posed no real threat even though their domains were similar and so was there business models.