It has always been my impression that the application of any patent reform legislation would be prospective only, leaving current/issued patents to be governed by "old" (current) law.  Most (but not all) legislation (I have a lot of experience with Federal tax legislation) is not retroactive; constituents rightly cry "Foul!" when politicians change the rules after the game has begun.

Nice to see it in black and white, though.  Thanks, as always, for your DD.