How can I search for patents in a specific subclass using the Patent Classification Home Page?

The Patent Classification Home Page offers an efficient way to search for patents within specific subclasses. MPEP 902.03(a) explains: “It is possible to see every patent in a subclass by browsing the classification schedules using the Classification Home Page in combination with the USPTO Patent Full-Text and Image Database.” To search:

1. Navigate to the classification schedules on the Patent Classification Home Page.
2. Locate the desired subclass.
3. Click on the patent icon next to the subclass.
4. This action will generate a search result in the USPTO Patent Full-Text and Image Database, displaying all patents in that subclass.

This method combines the classification system with the patent database, allowing for comprehensive and targeted patent searches.

To learn more:

• Patent search
• Subclass search
• Classification schedules