Is there going to be a big freeing up of lots of obvious patents in the late twenty-teens? I feel like a lot of this started in the late 90's, and I believe the

Is there going to be a big freeing up of lots of obvious patents in the late twenty-teens? I feel like a lot of this started in the late 90's, and I believe they only last twenty years. So will a lot of this just go away soon?