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


The CPC Notices of Changes are the official records of changes for the Cooperative Patent Classification system. The Notices contain information on Deleted and New subclasses and groups as well as other changes. CPC Notices of Changes are released to the patent community and to the general public as they are issued, usually on the first of the month.

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