So what are the chances there is an alien life form more inteligent than us?
I'm going to change this to just within our galaxy for simplicity now. So I would say it is fairly low. We know that the stars on the spiral "arms" of our galaxy have been around long enough for planets to form and give life a chance to form also. We are capable of observing these in the greatest detail (as they are closest to us) and continue to do so. I would say that if life in our galaxy was reasonably more inteligent than us, we would have seen some kind of trace, something that just wasn't right. As far as I know we haven't, so I'll put the odds at a low.