APE-INV Academic Patenting / Inventor Data
USPTO Issue Years and Patent Numbers
Patent datasets - D. Johnson
EPO - European Patent Bulletin
European Central Bank (ECB)
OECD Statistics
IMF Data and Statistics
WIPO International Classifications
OECD Statistics on STI
Orbis - Bureau van Dijk
EPO INPADOC
EPO Worldwide Patent Statistical Database (Patstat)
Eurostat
OECD S&T Data
NBER Data
NBER Patent Data Project
AEA Data Sources