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Cooperative Patent Classification (CPC) is a hierarchical system that groups similar patents together (similar to NAICS codes used for grouping companies in the same industry). CPC facilitates searching for "like" patents, regardless of the terminology used to describe the invention.
Example of CPC scheme: A46B 9/04 - toothbrush bristles arrangement
| Level | CPC code | Description |
|---|---|---|
| Section | A | Human Necessities |
| Class | A46 | Brushware |
| Subclass | A46B | Brushes |
| Main Group | A46B 9/00 | Arrangement of bristles in the brush body |
| Subgroup | A46B 9/04 | ... for toothbrushes |
Patent Searching Made Easy: How to Do Patent Searches Online and in The Library
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