Well to do so your looking at spending BIG BUCKS. I'm not exactly sure but I think you have to Corp your business...turn into a Corporation and if there's someone in the U.S. with rights to the name, you might not be able to trademark....doesn't matter if it's in a different country. Your best to contact someone from the government. Here's the website http://strategis.ic.gc.ca/corporations Check it out or give them a call for more info. Hope this helps out a bit, SP