The U.S. Department of Commerce's United States Patent and Trademark Office (USPTO) provides the ninth edidition of Manual of Patent Examining Procedure (MPEP) on its website http://www.uspto.gov/web/offices/pac/mpep/index.html
The documents updated in the Ninth Edition of the MPEP, dated March 2014, include changes that became effective in November 2013 or earlier. All of the documents have been updated for the Ninth Edition except Chapters 800, 900, 1000, 1300, 1700, 1800, 1900, 2000, 2300, 2400, 2500, and Appendix P.
The USPTO also continues to offer an online discussion tool for commenting on selected chapters of the Manual at http://uspto-mpep.ideascale.com.
(Source: USPTO Announcement)
