Canadian Patents Database: Access over 75 years of patent descriptions and images

Delphion Intellectual Property Network: Access over 27 years of U.S. Patent & Trademark Office (USPTO) patent descriptions and over 1.4 million European Patent Office, Patent Abstracts of Japan, World Intellectual Property Office patents and applications and INPADOC Family and Legal Status. Retrieves abstracts and free images. The first entries date back to January 5, 1971.

Derwent Information: The home of patent and scientific information on the Internet. Search recently-published patents. Retrieves citations.

eDesign: Intellectual Property Office of Singapore (IPOS). A one stop solution to find all registered designs transactions and searches, The search fields include design number, applicant’s name, filing date, class number, article number and UK design number.

ePatents: Intellectual Property Office of Singapore (IPOS). An Online Internet Service system providing a one-stop information services infrastructure to deliver published patent information to the public via Internet. The system allows searches on the database containing all patent applications filed with the Registry and all granted or registered patents since 1938. Allows access to the bibliographic information of a patent application or patent, the register of patents and specifications.

esp@cenet: A free service on the internet provided by the European Patent Organisation which allows you to search six separate patent databases: UK patents, European (EP) patents, PCT (WO) patents, Worldwide patents, Japanese patents, and a combined database that contains patents from sixteen European countries. Search queries yield patent bibliographic data with abstracts, patent descriptions, and patent claims, as well as patent images and drawings in .pdf format.

eTradeMarks Search: Intellectual Property of Singapore. Provides a search engine to search for records of registered trade marks and trade mark applications.

Free patents online: Freepatentsonline.com. Provides a search engine to search for US patents, US patents documents and European patents applications.

Google Patent Search : Search over 7 million patents.

Intellectual Property Digital Library: World Intellectual Property Classification. Provides access to intellectual data collections such as patents, trademarks and industrial designs hosted by World Intellectual Property Organisation.

Intellectual Property of Singapore: IPOS. Provides information on patents, trade marks, copyright, designs, their application processes and downloadable forms..

International Patent Classification (IPC): World Intellectual Property Classification. Provides links to information on Strasbourg Agreement, IPC 8th edition and its new versions, publication of the 8th edition of IPC, IPC master files, eForums and circulars.
Click on WIPO classification to find patents by classification codes.
Click on IPC Natural Language search to find patents by keywords.

IP Australia: Search Australian patents through the databases provided.

Patent Abstracts of Japan: Industrial Property Digital Library. Provides a search engine patents filed in Japan by applicants name, title of inventions, keywords in abstract, date of publication of application and IPC.

Patent databases in different countries: World Intellectual Property Organisation (WIPO). Provides links to the patent databases of various countries such as Australia, Canada, China, France, India, Japan, New Zealand, Singapore, Thailand, Spain, Switzerland, UK, US etc.

PatentScope Search: World Intellectual Property Organisation. A one stop search engine to look for international patent applications. Provides simple search, advanced search and browse applications by the week.

Software Patent Institute: Consists of descriptions of software technologies, but does not include patents and most current trade publications.

State Intellectual Property Office of PRC: Allows searching and retrieving Chinese patents information in the Chinese language only.

SurfIP: The Intellectual Property Office of Singapore. A vertical portal where the world's protected ideas can be accessed easily and rapidly. Databases include the European Patent Office (EPO), UK Patent Office, and World Intellectual Property Organization (WIPO) websites. Search Guide

Trade Marks - Where to search?: Red Patents Online. Provides links to the various searches available to find trademarks in Africa, Asia, Australia & Oceania, Central America & Caribbean, Europe, Middle East, South & North America and other countries.

US Patent and Trademark Office (USPTO): Enables searching and retrieving of full-text documents of all U.S. patents issued since 1976 to the most recent weekly issue. Download TIFF plugin to view full page images.

World country codes: USPTO. Shows a list WIPO two letter codes to represent country names which are used in most patent databases.

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