First you obviously don't know a thing about trademarks, since you only think about a word, vs a complete logo and complete wording.
Second, the use of TM means your are telling people this is your trademark but not registered, those that have a registered trademark use ®. Also the ® is not only for USA.
Third, who care what the hick is in the USPTO. We are NOT a US Corporation, and we follow the laws under our registered country.
Besides that, you can not trademark a everyday word. IE(Green, Red, Rose), and word quinto falls into that category. Just because someone received a trademark does not always mean it would hold up in a court of law.