The USPTO has released updated filing statistics for the post-grant proceedings that became available through the AIA, including preissuance submission, supplemental examination, inter partes review and covered business methods. The statistics are current as of December 31, 2013. See the statistics here.
For more information on preissuance submissions, click here.
For more information on supplementation examinations, click here.
For more information on inter partes review, click here.
For more information on covered business method patents, click here.