Using IPC and CPC codes to filter results

You can filter by IPC and CPC codes directly in your project from Explore or Query mode.

Adding a classification filter

Click Add Filter in your project under the BOOLEAN FILTERS section.
Select Class Code then either +CPC or +IPC to open the side panel.
From here, you can:
- Browse hierarchically by expanding the classification tree, or
- Search by code symbol or description using the search bar at the top.

📝 Tip: You can enter either the class code (e.g., “B60B”) or a keyword like “ball bearing.”

When selecting class codes, you can choose whether to include children or not:

Match selected codes only — restricts the filter to the exact classification codes selected.
Include children — automatically includes all child codes beneath the selected classification.

For example, selecting B62J1/00 and choosing Include children will filter results for everything under B62J1 .

Once selected, your codes will appear in the Filters list.
You can hover to see the code's definitions:
- +ALL means children are included
- Remove individual codes by clicking the ✕

Click Update results with BOOLEAN FILTERS toggled ON to apply your class code filter.
Multiple class codes are searched with OR logic (your results will match at least one of the selected codes).
Those codes are then all combined with any other Boolean filters using AND logic (your results will require matching at least one of the class codes AND also any other filters you've included)

For advanced users, you write more complex Boolean logic and search both IPC and CPC in a single line by using Query mode:

IPC=()

CPC=()

CIPC=()

Check our Query mode syntax documentation for complete list of supported search fields and how to use them

Add Filter → Select CPC or IPC → Browse or search codes → Select codes → Choose to match exact or include children.
See your selected codes directly in the filter panel.
Combine multiple codes and keyword filters for more precise results.
Use query mode for power searches.