Against such things there is no law.
This is one thing that I love about this blog: Running across phrases like this.
I have many times read through the fruits of the Spirit, but I don't think that I have ever given a second thought to this particular phrase found after that list.
What does it mean?
Most of the commentaries that I read said basically the same thing. They all agreed that this phrase is saying that if your life is characterized by the fruit of the Spirit, then there is no condemnation for you.
I don't know.
I have seen other places in the Bible where the word law is referring more to a rule of life, or a way of living. If that is the case, then this verse would mean that if you are living according to the Spirit, then there is no other way of living that can stand up to that.