The official NBER Patent
Data Project website is here. See that
site for the latest data; this site contains some interim files and additional data
that may not be completely cleaned.
Website errors on this site
can be reported to Bronwyn H. Hall.
Other queries about the patent
data (such as “when will it be available?”) should be sent to the NBER patent data
site. If you can’t read stata 9 file format, I suggest looking into
acquiring a copy of stat/transfer,
an excellent program that converts data files to and from a large variety of
formats. Please do not ask me to
convert data for you. The data available here are the following:
Patent
data for 1976-2006 – This file has application and grant year,
Note that there are multiple pdpass and multiple IPCs (icl) for each
patent, so this file has only 3,209,376 unique patent numbers for 4,855,982
observations. Be careful not to double count!
File format:
obs: 4,855,982 Patents granted through 2006,
including IPCs
vars: 13 28 Mar 2009 15:28
size: 267,079,010 (57.5% of memory free)
-------------------------------------------------------------------------------
storage display value
variable name
type format label
variable label
-------------------------------------------------------------------------------
appyear
int %8.0g Year patent applied for
assignee
long %12.0g Original assignee number
cat
byte %8.0g HJT tech class (1-6)
gyear
int %8.0g Year patent granted
icl
str18 %18s clas/international
classification
icl_class
str4 %9s Main 4-char IPC
icl_maingroup
float %9.0g Main group within 4char IPC
iclnum byte
%8.0g clas/icl
seq. number (imc)
nclass
int %8.0g 3-digit US patent class
(10=D)
patent
long %12.0g patent number
pdpass
long %12.0g Unique assignee number for
match to CS
subcat
byte %8.0g HJT technology
subcategory(2-digit)
subclass
float %9.0g Numerical subclass
-------------------------------------------------------------------------------
Sorted by:
patent pdpass icl
File format:
obs: 23,650,891 USPTO citing-cited patent pairs
for
patents issued 1976-2006
vars: 3 23 Aug 2008 10:39
size: 331,112,474
-------------------------------------------------------------------------------
storage display value
variable name
type format label
variable label
-------------------------------------------------------------------------------
citing
long %12.0g Number of citing patent
cited
long %12.0g Number of cited patent
ncites7606
int %9.0g Tot cites received by pats
iss
1976-2006
-------------------------------------------------------------------------------
Sorted by:
cited citing
Last
Updated 26 July 2018 by Bronwyn H.
Hall