Patent Database

Free Patent Database:

  1. Patent Lens - Free Full-text Worldwide Patent Searching - serving 8,205,901 patent documents with option of BLAST - Protein and DNA Sequence Search within patents
  2. Spark-IP - IP based technology clustering online tool
  3. DECOPA - IPCentury innovative software tool based on AI-systems for use in research and development and in patenting (Intellectual Property Management) - Guest access available
  4. Patent Tool - The tools on this site are here to save you time when performing analysis of patents - Worth giving a try
  5. Delphion - Delphion is providing FREE 1-day Unlimited subscription package - Click here to register
  6. Gethepatent.com - Free search & result view possible
  7. Wikipatent -  Download free patents

Vendor Patent Database:

  1. Delphion
  2. Micropat
  3. SIP
  4. Patbase
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