LibGuides: Patents: Patent Searching

USPTO Patent Searching Resources

Search for Patents
How to search patents online through the USPTO.
USPTO Patent Full-Text and Image Database (PatFT)
Search US Patents from 1790 to present. 1790-1975 as images, 1976 to present as full text patents.
Patent Center
Search by application number, patent number, PCT number, publication number or international design registration number.
Patent Classification
Patent classification is a system for organizing all U.S. patent documents and other technical documents into specific technology groupings based on common subject matter.

Nexis Uni: Patent Search
Access to TotalPatent One through Nexis Uni. Provides advance search options.