I run a web forum, and recently a member has tried to sell stickers containing our logo. I reminded him that no sales of items containing our logo are permitted with-out admin approval. He the then asked for approval in a very insulting, unprofessional manner, and I of course turned it down. He is now threatening to go ahead and sell them without our permission and said that we can file a "copyright infringement dispute in Can-ada." We are in the US, he lives in Canada. I'm not sure what the process would be to stop this, so if anyone can shed some light on it, that'd be wonderful.