E-Patents
• Australian Patent Office
• Canadian
• Ekaswaa – all Indian patent documents Search
• European Patent
• FreePatentsOnline.com – A simple patent search database, freepatentsonline.com offers to chemical researchers a unique way of searching for patent documents.
• French Patent Office
• German Patent Office
• Govt. of India’s Patents Website
• Greek Industrial Property Organisation
• Hong Kong Patent Office
• Indian Patent design and trademark office
• Indian Patent Information Retrieval System (IPIRS)
• Intellectual Property Office of the People’s Republic of China (SIPO)
• Internet sites for patent search
• Irish Patent Office
• Korean Intellectual Property Office
• Malaysian Intellectual Property Division
• New Zealand Patent Office
• Patent Facilitating Centre
• Patent information centres (PATLIB)
• Patent Lens – A worldwide, open-access, free full-text patent informatics resource.
• Russian Patent Office
• Singaporean Patent Office
• Swedish Patent Office
• Swiss Institute of Intellectual Property
• Thai
• UK Intellectual Property Office
• United States
• World Intellectual Property Organization (WIPO)