Patent Databases

Comprehensive patent data can be found here

United States

• NBER patent data or link
  • Search link for individual patent: link
  • Patent API
• USPTO - United States patent and Trademark Office
  • Patent ranking by orgs
  • Bulk Data Storage System: repository for raw public bulk data
    • For Researcher
  • Patent Assignment Dataset details information of patent assignment since 1970 with schema and description and code
  • Pre-Grant Publications Data Download Tables with example code note that organizaiton here is different from Compustat and CRSP, hard to match.
  • Patent Examiniation Data system: records of USPTO patent application, patent filing status and transaction history data
  • Trademark Assignment Dataset
  • Patent Assignment Dataset
  • Duke Innovation
• Matched US patents to CRSP 1926 - 2010: Leonid Kogan, Dimitris Papanikolaou, Amit Seru, and Noah Stoffman. Description
  • Maintainer with code

Recognizing Patent:

• Utility: 6 - 8 digits lasts for 20 years from the filed date

Changes to Patent Terms

Table based on wikipedia and USPTO

• Reissue (RE######)
• Plant Patent (PP######) lasts for 20 years from the application date
• Design (D#######) lasts for 14 years from the granted date
• Additions or Improvements (AI#######)
• X Patents (X#######)
• H Documents (H#######)
• T Documents (T#######)

Worldwide

• EPO and OECD data
• wipo

Matching process with CRSP or Compustat

• KPSS Technological Innovation, Resource Allocation, and Growth
• UVA Darden Global Corporate Patent Dataset
• Miao Liu Note that you need Bing API and use Python Github repo
• NBER Guide