Scopus
Scopus is an Elsevier database that is updated daily and contains scientific, technical and medical literature, including patents.There are over 46 million patent records derived from five patent offices available on Scopus:
1. World Intellectual Property Organization (WIPO)
2. European Patent Office (EPO)
3. US Patent Office (USPTO)
4. Japanese Patent Office ( JPO)
5. UK Intellectual Property Office (IPO.GOV.UK)