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Patents and Trademarks

Patent & Trademark basic information, databases, links for legal and status information

Search Most Often Used Patent Databases

These web databases allow free access for everyone.

Citation Search (on campus, or with UMD password)

Databases- Onsite Only

Derwent Innovations Index (requires UMD username/password)

  • Search international patents back to 1963; many have hot links to later patents that cite them as prior art


  • Please call ahead: Librarian login required
  • Faster than the USPTO free web databases
  • Offers more features and search capabilities than the USPTO free web databases
  • Includes international patents

Official GazetteMicrofilm 

  • vol.1(1872) - vol.845(1967)

Paper OG in offsite storage: 1943-1998 (ask  Librarian for assistance)

But current year OGs are online: