Patent Crosswalks

Below are links to the 'Algorithmic Links with Probabilities' (ALP) crosswalks which convert various patent classifications into the following industry classifications: ISIC (Rev. 2, 3, 3.1, 4), SITC (Rev. 2, 3, 4), NAICS (1997, 2002, 2007) and HS (2002 and 2007). You can find the 'readme' file with instructions on how the crosswalk can be used here. If you have any questions or feedback, please contact me here.

Full:

International Patent Classification (IPC) Crosswalks - Version 2209

United States Patent Classification (USPC) Crosswalks - Version 2209

Cooperative Patent Classification (CPC) Crosswalks - Version 2209

Excluding Services (Recommended):

International Patent Classification (IPC) Crosswalks (excluding Service industries) - Version 2209

United States Patent Classification (USPC) Crosswalks (excluding Service industries) - Version 2209

Cooperative Patent Classification (CPC) Crosswalks (excluding Service industries) - Version 2209

For the IPC-based Crosswalk, please cite the following:

"Getting patents and economic data to speak to each other: An ‘algorithmic links with probabilities’ approach for joint analyses of patenting and economic activity." with Travis Lybbert, Research Policy, 43.3 (2014): 530-542.

For the USPC and CPC-based Crosswalk, please cite the following:

"An ‘Algorithmic Links with Probabilities’ Crosswalk for USPC and CPC Patent Classifications with an Application Towards Industrial Technology Composition" with Nathan Goldschlag and Travis Lybbert, Economics of Innovation and New Technology, (2019): 1-21.