Ask HN: Someone registered trademark for the name of my product
Last month I released a new web product. Let's call it "Foobar" (the original name is something else). My product already has users, it has an ad video, it'll soon be in app store, too. The domain name "foobar.com" is taken by a Canadian company though. It's parked, and has a form of "submit offer if you want to buy it". I thought the domain name was for sale. My product is on another domain name, something like "getfoobar.com".
Today I just realized, that Canadian company who owns the domain name already registered the trademark in Canada without the product released, and also pending trademark application in US. So the name of my product is registered under another company. By the way, we're talking about a shady loan company, not a software company.
What should I do in this case ? I don't want to change the name of product because my product is already released and