httpwebwitch - 4:34 pm on Nov 14, 2011 (gmt 0)
Hmm. They're reselling your products and presumably you're benefiting from that, so there's no need to be confrontational, but... you should open communication with them about the risk of misrepresentation and confusion.
An aggressive email commanding them to STOP isn't the right approach.
Even if it's not a registered trademark, that conversation is a good one to have with your reseller. A phone call with them is a chance to talk about the branding/trademark issue, but also to get to know someone there on a first-name basis and establish a rapport.