There is also the possibility that judicial decisions (such as Alice) have created enough change that reform is less necessary. See this interview or Mark Lemley, a scholar who is often seen as a critic of the patent system: http://www.iam-magazine.com/Blog/Detail.aspx?g=28572386-7cf9...

Whether judicial activity as opposed to congress should set the de facto policy is a good idea or not, I cannot say.