World Intellectual Property Digital Library This digital library is established by the World Intellectual Property Organization, including international patent database, MADRID trademark database, HAQUE design database, Indian patent database and JOPAL scientific and technological core journal title database. At present, the international patent database only contains PCT international patents from 1997 to now, including titles, abstracts and figures, which are updated once a week. American Patent Database An online retrieval system of American patent database made by the United States Patent and Trademark Office. Including all the full-text data since January 1, 1976, as well as the image scanning data since 179, and also providing the retrieval of recent patent applications. The system provides simple retrieval, advanced retrieval, patent number retrieval and other retrieval methods, and can browse the full text. The Canadian Patent Database, provided by the Canadian Patent Office, contains more than 1.6 million Canadian patents in recent 75 years, including full-text patents and graphics. European patent database is a patent literature database established by the European Patent Office, which provides free patent retrieval service, and can be used to retrieve patent information collected by the European Patent Office and PCT patents published by WIPO. The Japanese page of Japanese patent database can search Japanese patent documents and browse full-text descriptions on the Japanese interface. There are eight types of databases provided on this page, namely: (1) inventions and utility models; (2) design; (3) trademarks; (4) foreign patents; (5) review; (6) legal status; (7) Other documents; (8) Literature scope. See the searchable range of Japanese patent database on the Internet for details. EssayStar.com Korea Intellectual Property Center provides all databases of Korean intellectual property rights, including patents, which can be viewed in full. The Australian patent database can query all open patents in Australia, download the full text of PDF and browse the full text. The Indian Patent Database only contains the titles of the applications published in the Indian Patent Bulletin after 1995, and only some of them can browse the full text. According to the report of China Knowledge Production Center (8-3-27), India is making every effort to build its own patent database. EssayStar.com Singapore International Intellectual Property Office Singapore ePatents patent inquiry website The former can inquire about various intellectual property data including patents; The latter can query patent data. China Patent Information Center, Patent Retrieval of China Patent Office, has two entrances where you can inquire about China patent data specifications and pictures and texts for free. Delphi on international and us patent search database. You can see the full text of the first thirteen pages and some patents in the patent database of all countries in the world and the United States. Patent specifications and audio-visual materials from 195 to present in Taiwan Province Patent Database. EssayStar.com Hong Kong Patent Database The patent specifications published in Hong Kong Patent Database after June 27th, 1997 can be consulted online. If the specifications of standard patents are not in this online database, users can try to find the relevant patent specifications in the European Patent Office (including the patent specifications published by the European Patent Office and the United Kingdom) or the online database in China National Intellectual Property Administration, China. FreePatentSonline FreePatentSonline is a powerful and free patent inquiry website, which currently provides inquiries and downloads of American patents and patent applications, some European patents, Japanese patents and WIPO patents. Instructions for use: Individual users can download the content of this website by registering and establishing their personal accounts for free in this system.