In Jude 9, why couldn't Michael the Archangel make a judgement against the Devil?

Well, now that he reigns, He can and will rebuke them for it is His job, He is already in action, and the angels and all his servants are doing just that. 1 Corinthians 5:6" Does anyone of YOU that has a case against the other dare to go to court before unrighteous men, and not before the holy ones? 2 Or do YOU not know that the holy ones will judge the world? And if the world is to be judged by YOU, are YOU unfit to try very trivial matters? 3 Do YOU not know that we shall judge angels? Why, then, not matters of this life? "