This file describes the data on eco_control_master. The file itself is in stata version 12 format. The appln and publn variables are the same as those on PATSTAT, which can be consulted for exact code definitions.


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  obs:           698                          Master list of ecopatents and matched controls - Apr17 patstat

 vars:            21                          26 Jul 2017 13:46

 size:        85,854                          (_dta has notes)


              storage   display    value

variable name   type    format     label      variable label


appln_auth      str2    %9s                   Application Authority

appln_filing_date int   %td                   Application filing date

appln_id        long    %12.0g                Application id PATSTAT APR 2017

appln_id_old    long    %10.0g                nonpermanent Patstat appln id from 2011

ecopc           byte    %9.0g                 Dummy for eco-patent

entry_date      int     %d                    Date firm entered commons

equivalent      str8    %9s                   Sample id (eco & con followed by seq num)

grant_date      int     %d                    Date patent granted

gyear           int     %9.0g                 Year of patent grant

id              str14   %14s                  Unique publn id PATSTAT APR 2017

legal_date      int     %td..                 Date of April 2017 legal status

legal_date_old  int     %td                   Date of Feb/Mar 2011 legal status

legal_status    int     %17.0g     lslbl      Legal status as of April 2017, ecopc only

legal_status_old int    %28.0g     lsolbl     Legal status as of February/March 2011

publn_auth      str2    %9s                   Publication authority

publn_date      int     %td                   Publication date

publn_kind      str2    %9s                   Publication kind (see patstat for defs)

publn_nr        str12   %12s                  Publication number

publn_year      int     %9.0g                 Publication Year (created)

sample94        byte    %9.0g                 Dummy (priority patent)

std_name        str53   %53s                  Standardized name of patent owner


Sorted by: appln_id