Replying since I can't edit the post... Some studies regarding the contributions, consistencies and inconsistencies of the CAFC.

1. "Promoting the Progress: Three Decades of Patent Jurisprudence in the Court of Appeals for the Federal Circuit", Damon C. Andrews" - http://law.missouri.edu/lawreview/files/2012/11/Andrews.pdf

2. "On the Causes of Unpredictability of Federal Circuit Decisions In Patent Cases", Paul M. Janicke - http://papers.ssrn.com/sol3/papers.cfm?abstract_id=960636

3. "How Federal Circuit Judges Vote in Patent Validity Cases", Mark Lemley and John R. Allison - http://papers.ssrn.com/sol3/papers.cfm?abstract_id=189512