How comprehensive is the USPC Index?
The USPC Index, while useful, should not be considered exhaustive. According to MPEP 902.01(a):
“The index is used as an initial entry into the system and should not be considered exhaustive. All appropriate class schedules should be scanned for specifically related subclasses, and the definitions and associated notes of the pertinent classifications should also be reviewed, even when the citation found in the Index appears to be restricted to a specific subject matter area.”
This means that users should not rely solely on the Index but should also review relevant class schedules, definitions, and associated notes to ensure a comprehensive search.
To learn more: