The World international Patent office does not issue patents, but allows inventors to apply for patent protection simultaneously in many countries as dictated by the Patent co-operation treaty. The Patentscope database is an interface to search international patent applications from 1978 to present.
A database of chemical patent information created by the firm SureChem, now made publicly available by the European Bioinformatics Institute (EBI). Rather than relying on search terms, SureChem allows users to search by drawing the Chemical Structure. Users must create an account.