What is a precedence reference in CPC classification?
A precedence reference is a special type of limiting reference in CPC classification that refers to another group or groups taking “precedence” within the same subclass. The MPEP 905.01(a)(1) states:
“A precedence reference is a special example of a limiting reference that always refers to another group or groups taking “precedence” within the same subclass. The purpose of a precedence reference is to remove overlap between two similar groups.”
Precedence references help in organizing and prioritizing classification groups to avoid redundancy and ensure proper categorization of patent documents.
To learn more: