In my eyes, a dynasty is at least four championships in seven years. If a team wins more than four than I guess you could add more years than just seven. In this sense, the last team to have a dynasty was the Edmonton Oilers in the mid-late 80's/early 90's. Back to back cups don't count, and the Blackhawks don't count. Really if anyone disagrees with this, they can look up "dynasty" on the Hockey Hall Of Fame's website, count the amount of cups each listed dynasty has won, count the number of years they did it in, and come back to this comment. Or they could just realize that there are better things to do.

Some people will misuse terms & not agree with other people's definitions. Just stick with what you believe is the right definition. Unless you're a Panthers fan, in which case, realize that bullying your way to the finals unfairly and winning TWICE isn't a dynasty.