Product News

Cooperative Patent Classification (CPC) Added to USPATOLD on STN®

March  22nd,   2013

Effective March 24, 2013, STN now includes Cooperative Patent Classification (CPC) search and display features, and a CPC thesaurus in USPATOLD. USPATOLD contains full-text and classifications of published U.S. patents issued between 1790-1975.

The addition of CPC data improves classification searching of U.S. patents for more than 50,000 records in USPATOLD lacking IPC data.

New CPC search fields include:

Search Field



Search and select a CPC code


Search using CPC metadata including:

- CPC codes applied for inventive aspects in a patent

- CPC codes initially assigned to the patent vs. during a reclassification


In addition to CPC code custom displays in USPATOLD, new display capabilities include:

Display Field



CPC codes and the available metadata per CPC code


Deduplicated list of CPC codes for the patent family


The CPC thesaurus structure resembles IPC and ECLA patent classification thesauri on STN with monthly updates planned.

Need more information? Enter HELP CPC in USPATOLD or see CPC Search and Display Fields.

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