Cirque du Soliel and the word "cirque"

With all of the copyright stuff that we read in class, I was looking at Cirque du Soleil stuff and found that they had a copyright issue a few years ago. Cirque du Soleil had a competitor (a weak one) that opened its doors and was called Cirque Dreams. Cirque du Soleil didn’t like that Cirque Dreams could use the word “cirque.” Cirque du Soleil took Cirque Dreams to court to try to get the word “cirque” off of the competitor’s name. The court ruled that Cirque du Soleil couldn’t have a word like “cirque” all to themselves because it is like the same situation that companies can’t have the word “the” all to themselves.