KPSS patent data

The project uses the KPSS extended patent dataset for patent assignments, citations, economic values, and links to CRSP securities.

Storage: /data/patents/

File	Contents
KPSS_2024.csv	Patent dates, citations, and nominal and real patent values
Match_patent_permco_permno_2024.csv	Patent links to CRSP permco and permno

The code also uses /data/compustat/crsp_names.csv for historical industry classifications and /data/compustat/ccm_linktable.csv for Compustat links.

The repository does not record the download query or acquisition date for the current KPSS files. That provenance should be added when the source is next refreshed.

The repository has two separate downstream branches:

• the processed Python patent panel, which has no current consumers; and
• the active R analysis patent panel, which reads KPSS_2024.csv directly.