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Research Guides

Patent and Trademark Information: International and National Intellectual Property Resources

Selected International and National Intellectual Property Offices

Selected International and National Intellectual Property Sites

Please Note: Some of these sites may only be available in the original language. Translation pages/sites are not always available.

The USPTO's list of other patent office web sites


The content of the world-wide database corresponds to all the documents available to the EPO examiners; 63 countries are covered. For each document, the access depends on what is presently available in electronic form at the EPO. A search carried out in the esp@cenet database cannot replace a professional search. The information furnished is not exhaustive and this service cannot be considered as a complete and official source of patent information.

World Intellectual Property Organization (WIPO)
The World Intellectual Property Organization is an agency of the United Nations. WIPO promotes intellectual property protection worldwide. Enables cooperation and collaboration among member states and other international organizations and entities. WIPO provides international registration services for patents, trademarks and designs, as well as maintaining international classification systems. Website includes information about the International Patent Classification System (IPC) and the Patent Cooperation Treaty (PCT), including PCT application information.


European and Joint Sites

European Patent Office

Website of the Trilateral Co-operation
Website established by the USPTO, EPO and JPO. This site provides links to each of the three patent offices as well as links to joint projects and reference materials.


German Patent & Trademark Office
This database,DEPATIS, is provided by the German Patent and Trade Mark Office (GPTO). Includes documents from around the world in addition to: OS-German Patent applications; PS-German Patent Specification; GM-German Utility Model; EP-European Applications including Germany as a designated State; WO-International Patent applications according to PCT; ZE-German Protection Certificates for Medicines and Fertilizers; TO-German IC Topographies; DD-German Patent applications and patents originating in former East-Germany.

German Patent & Trademark Office
Deutches Patent- und Markenamt (DPMA)

United Kingdom

UK Intellectual Property Office
The UK Intellectual Property Office manages copyrights, designs, patents and trade marks in the United Kingdom. This website also provides access to searchable databases of UK designs, patents and trade marks.

North America:


Canadian Patents Database
The free database of Canadian patents and laid-open patent applications has been made available by CIPO (Canadian Intellectual Property Office). It contains full text images from 1920, brief details from 1869 and abstracts and claims from 1978.

Canadian Intellectual Property Office (CIPO)
CIPO's intellectual property resources include databases of Canadian patents, industrial designs, trade-marks and copyrights.

United States

United States Patent and Trademark Office (USPTO)
Provides many levels of excellent information, including the most up to date information regarding patent and trademark laws, fees, rules and procedures. Also offers full text of common USPTO publications.



Japan Patent Office (JPO)
In addition to patent searching, the Japanese patent office now offers trademark searching and design searching. Choose "To search industrial property database" from the main page.



While the Library reference service staff is happy to provide assistance with your search, we cannot perform searches, evaluate searches, assist with your application or dispense legal advice.

The University of Washington and its employees are providing a service of an informational nature with no express or implied warranty for results and assume no obligation or liability for damage arising out of the use, or inability to use, the information provided.  Every effort is made to keep this information up to date. However, errors and omissions may occur.

For the most up-to-date information or legal advice, please contact a patent or trademark attorney.