With respect to copyrights, it is well known in the IP biz that Congress will regularly increase the length of copyright protection everytime that Disney's copyright on Mickey Mouse is due to expire. (Disney is dead, but his corporation has lots of living lawyers.)
This conversation on patents reminds me of this: http://www.thisamericanlife.org/radi...patents-attack. As usual with "This American Life," an extremely interesting listen if you have the time and enjoy radio.
Oops, missed the grin.