Patent & Trademark Resources on the Web

European Patent Office (EPO) permits free access to more than 110 million patent documents using limited fields, keywords, IPC, and ECLA from 82 countries. It uses international and European classification. Patent families are available. Translations are available for several languages.

World Intellectual Property Office (WIPO) to search for international Patent Cooperation Treaty (PCT) applications.

Canadian Intellectual Patent Office (CIPO) contains 151 years of patent descriptions and images.

Lists countries and website links. Some sites have an English version.

SciFinder is the principal chemical literature database, including international patents and patent families. It is licensed for SBU users only. Every user has to create a free account.

Choose Patent in drop-down menu to search in TotalPatent One.

Free global patent database; searchable in many languages. USPTO grants from 1976. Offers keyword and gene sequences. CPC, IPCR, and US Classifications. Updated frequently.