DWPI Reference Manual

DWPI Reference Manual
STN Online User Guide

STN User Documentation

Derwent World Patents Index provides access to information from more than 48 million patents, giving details of over 22 million inventions. Each week data are added from more than 20,000 documents from 47 patent-issuing authorities, including the European Patent Office and the World Intellectual Property Organization.

Read more in the STN User Documentation