Cooperative Patent Classification (CPC) Notice of Changes (NOCs)


The CPC Notice of Changes are the official record of change for the Cooperative Patent Classification system. The Notices contain information on Abolished and Established, and other changes to, subclasses and groups. CPC Notice of Changes are released to the patent community and to the general public as they are issued, usually the first of the month.

Notice of Changes for 20172016, 2015, 2014, 2013 or 2013-2017