Description:

Derwent Patents Citation Index™ (DPCI) is a unique database containing citations of patents and literature including those referenced by the examiner, inventor/author, or opposition/third party during the determination of patentability. It is patent family based highlighting retrospective technological origins of an invention as well as its impact on future technology.
DPCI provides access to patent and literature citations found in more than 10.6 million patent families. Every week, new citations, both patent and literature, from about 10,000 documents are added to the file.
DPCI contains bibliographic patent family data from the Derwent World Patents Index and all patents and literature cited, as well as references to citing patents. A list of Thomson Scientific assigned company codes for patent assignees matched with company names is available as an online thesaurus.
Coverage includes all patent-relevant areas of science and technology.

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