At first I thought see this guys site was innocent enough as there are a lot of websites and brands with similar names. But eventually he became more and more similar. At first they only started a similar name, eg webmasteringworld, doing some similar IT business. Now i see they have a new site with similar name imitating my brand further to the point i have no choice but to file DMCA.

Looking for any advice or experiences. I have read i need to email a cease and desist first but not sure how long i have to give him to remove it before DMCA is filed.

Also, my trademark is only registered in Canada not the US, does that mean I'd be wasting my time ? because he didnt actually copy content, just brand name and business model.