About Derwent Innovations Index

Derwent Innovations Index

Derwent Innovations Index is the world's most comprehensive database of international patent information, merging Derwent World Patents Index® with Derwent Patents Citation Index®.


Derwent World Patents Index

Derwent World Patents Index® (DWPI) is the world's most comprehensive collection of professionally abstracted and annotated patent documents.

DWPI covers more than 30.5 million inventions (Basic Records/patent families) detailed in over 65 million patent documents, with coverage from 50 worldwide patent authorities and 2 literature sources.

All patent data is regularly updated with new information obtained from Derwent World Patents Index, including data associated with the Derwent Chemistry Resource, a unique chemical structure database.

More information about DWPI coverage, along with lists of WIPO country codes and INID codes can be found on the DWPI coverage page


Derwent Patents Citation Index

The Derwent Patents Citation Index® (Derwent PCI) is an online database of citation data appearing in patents from 6 major patent authorities. It provides details of citations, both patent and literature, reviewed by the examiner during the examination of a patent application.

Derwent PCI is the only database providing multi-source patents citation coverage of all technologies. Prior to May 1997, examiner and author citations were provided for 16 patent-issuing authorities. The database also contains a backfile with patent records dating back to the 1970's.

Derwent PCI contains all up-to-date bibliographic patent family data from Derwent World Patents Index and all patents and literature cited by examiners, as well as references to citing patents. Each week, new cited and citing references are added for approximately 45,000 records from six major patent-issuing authorities.


Derwent Chemistry Resource

Derwent Chemistry Resource is a unique database that contains searchable chemical structures and other substance-based information. It is used to search for specific compounds that are indexed in Derwent World Patents Index records. Think of Derwent Chemistry Resource as a searchable, central indexing system for chemical information in Derwent records, a single point of entry in which you can search for chemical entities in all of Derwent's bibliographic records.