Cooperative Patent Classification

Consolidated Revision Concordance List (RCL)


The following is a list of all symbols impacted by Revision Projects in the February 1, 2018 release. Please refer to the CPC Notices of Changes for additional information regarding changes to the Scheme, Definition, and Concordance.


Note: the following table is a simplified Revision Concordance List for all Revision Projects published in the current release. Specific information relating to reclassification (e.g. information on administrative transfers or intellectual reclassification) can be found in the Notice of Change for each Revision Project.

Please refer to the List of Deleted Symbols for information on all symbols which have ever been deleted from CPC.


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* existing entries with modified file scope

+ new entries which involve further reclassification

! frozen entries which will be deleted once reclassification of documents has completed

United States Patent and Trademark Office