Patent Databases
US Patent Search
United State Patent and Trademark Office (USPTO)
For those colleagues who are interested in doing a patent search, please be advised that effective from November 9, 1995, patent abstracts going back more than twenty years are available at no charge to the public on the World Wide Web home page of the USPTO.


Chinese Patent Search
State Intellectual Property Office of P. R. China
The State Intellectual Property Office of P. R. China provides a searchable database of all published Chinese patents.


PCT Search
The Intellectual Property Digital Library Web by WIPO
This prototype of the PCT Gazette is available for test purposes only. Among the changes incorporated in the prototype are changes to the layout and format of the data, access to data concerning republished PCT applications (including images of republished pages), and searchable access to the full text of description and claims. The prototype will be available in parallel with the current PCT Gazette until the completion of the necessary testing and consultation, after which it is planned that the prototype, as modified as a result of the testing and consultation, will supercede the current PCT Gazette.


Misc. Search Engines

SurfIP - An IP Portal administered by the Intellectual Property Office
of Singapore

SurfIP ( is a vertical portal that offers convenient access to multiple sources, such as IP databses, legal and business websites in one search operation. The patent sources that can be searched include the European Patent Office, the UK Patent Office, and the World Intellectual Property Organisation (WIPO).
European Patent Office
With the EPO datebase, you can search over 30 million European patent documents.
Canadian Patent Database
The Canadian Intellectual Property Office(CIPO) provides a searchable database of Canadian patent Bibliographic data. The database contains issued patents and applications for patents that have been made available to the public from October 1, 1989 to the present. This database will be updated on a monthly basis. In future, the CIPO will be able to add patent abstracts, as well as provide data prior to October 1989. 
Taiwan Patent Search

MEDLINE Database

MEDLINE is compiled by the U.S. National Library of Medicine (NLM). MEDLINE is the world's most comprehensive source of life sciences and biomedical bibliographic infomation: it contains almost 8 million records from over 7,300 different publications from 1965-present, or over 8 gigabytes of data.