All the replies you have recieved are WRONG!
GoldenPalace while a trademark for GAMBLING does not entitle them to the domain GoldenPalace.us UNLESS such domain is gambling related as it is diluting their mark and in direct competition in the same area of commerce.
Now, if GoldenPalace.us was the website of say, a chinese restaurant named Golden Palace then goldenpalace.com has no legal ground nor a leg to stand on and has a losing case.
What if GoldenPalace.us was a website about the TV show?
http://en.wikipedia.org/wiki/The_Golden_Palace or even the movie
http://www.imdb.com/title/tt0103426/
What if the hotel Golden Palace wanted it?
http://www.thi-hotels.com/hotels/gol...tel-turin.html
tell them to fuck off!