On February 9, 2012, the U.S. Patent and Trademark Office published a practice guide for trials before the PTAB, which begin on September 16, 2012, with the implementation of Inter Partes Reviews.  These guide can be found at Federal Register Volume 77, Number 27: http://www.gpo.gov/fdsys/pkg/FR-2012-02-09/html/2012-2523.htm

On February 9, 2012, the U.S. Patent and Trademark Office published proposed regulations to govern the trials of Post-Grant Review and Inter Partes Review proceedings before the Patent Trials and Appeals Board.  The Post Grant Review Inter Partes Review proceedings take effect on September 16, 2012, although the first Post-Grant Review cannot occur until a patent issues on a patent application filed on or after March 16, 2013.  These proposed regulations can be found at Federal Register Volume 77, Number 27: http://www.gpo.gov/fdsys/pkg/FR-2012-02-09/html/2012-2525.htm