Dont know what country you live in but check the categories the trademark was linked to. If they are in the same line of business as you and the TM has that cat

Dont know what country you live in but check the categories the trademark was linked to. If they are in the same line of business as you and the TM has that category that covers the line of business you are in I would be questioning the trademarks office for awarding the TM to the other entity. TM's are cheap so its an easy trick and a lawyers letter doesn't cost much either, but its a legal game you may well be forced to play, because they might go to the domain registrar and try it on with them to get your domain. Unfortunately these are the additional cost we can be forced into playing if someone with more money wants something from you like in this case your .com name. You could also see if your domain registrar as some sort of arbitration which could keep costs down or lower than using a lawyer. I think divorce lawyers best typifies some of them thrive on disputes. Good luck!