When I created the name and logo for my company and registered the brand name and trademark in my tiny country, I received several threatening emails from a big international law firm representing a corporation in the US intimidating me to desist from it or else be sued. I didn't backed up and the local trademark office upheld my case. I won, and they had to pay all legal fees. I then offered to sell them the brand and trademark for a ridiculous amount of money, since they were so eager to protect their brand. They never replied ever since.
Eden