This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections.
Espacenet: free access to the database of over 90 million patents. The Espacenet interface displays Global Dossier icons and links to registers for certain authorities providing access to the Global Dossier and to register information,
|3||ARIPO Online database
Search ARIPO database online with simple keywords, names or numbers · icon. eForms. Download standard forms you need for acquisition of IP rights.
|4||Google patents database
Search and read the full text of patents from around the world with Google Patents, and find prior art in the index of non-patent literature
development and innovation research (28,000 journals, books and
other reference works)www.wipo.int/ardi/en/
USPTO Patent Full-Text and Image Database (PatFT)
Tuesday, February 28, 2017