Free Patent Search Databases
From Vinodksingh
Contents |
Patent Search
- USPTO - US published and Application patents
- EPO - access to European patents by country, EP, Japanese, and World Patents
- FreePatentsOnline - Search tools for U.S. patents
- PCT Patent Database - WIPO (World Intellectual Property Organization)
- Chinese Patents - In chinese language. How to search
- Patent Storm - US patent search, by number, inventor, IPC and publication date.
- GlobalSpec - Patent and non-patent search
Patent File History
- PAIR - allows you to see US Patent Office processing information on patents and applications - can be very helpful. With more recent patents it lets you see a lot of materials in the "file wrapper".