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The data in these files are freely available to members of this community. We expect members to inform the community of errors in the data or documentation and to provide fixes/improvements. Also, we strongly encourage members to contribute back to the community. When you supplement these data, e.g., by linking these files to additional sources, we encourage you to make the supplemental links available to the community on this site after your research is complete. We also encourage members to share information about novel uses of these data and to help out other users who have difficulty with the data. 

Stata versions (.dta) are version 9 files (larger files are zipped as indicated). ASCII versions are zipped, tab-delimited ASCII files

 File (Stata 9)  ASCII Version Description  User Documentation
 Company:patent matching
     matchdoc.pdf
 pdpcohdr.dta.zip
(600k)
pdpcohdr.dat.zip
(500k)
Corporate entity file matched to WRDS Compustat file
 
 dynass.dta.zip
(161k)
dynass.dat.zip
(200k)
Dynamic match of patent assignee to corporate entity
 
 assignee.dta.zip
(13m)
assignee.asc.zip
(5m)
 File of patent assignees, including name and unique assignee number (PDPASS)
 
 Assigned patents   
 patassg.dta.zip
(31m)
 patassg.dat.zip
(29m)

 All assigned patents patassg.txt

 Utility patents    
 pat76_06_assg.dta.zip
(118m)
 pat76_06_assgasc.zip
(111m)
All utility patents w. citation data and assignee numbers (if assigned), one record per patent per assignee patn data description
 pat76_06_ipc.dta.zip
(75m) 

 pat76_06_ipcasc.zip
(75m)
All utility patents, one record per patent per IPC class 
 cite76_06.zip

  Citations data (not fully cleaned) data description
 org_gen_76_06.zip
(19m)
  Originality and generality measures