I had the same issue years ago.. I contacted a lawyer..
It is most unlikely that this person has a copyright on that name like that. A copyright like that costs several 100k a year ! And you have to buy it for more then 1 continent of the world. He prolly is just full of shit. Never sell that domain for 500 usd. Just ask him for the copyright docs he has on the name. He is not google, nike or mcdonalds
