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Derwent World Patents Index (DWPI) on Delphion Overview The Derwent World Patents Index (DWPI®) is the most comprehensive database of enhanced patent information in the world. Derwent helps simplify and speed your research by providing, among other important features, patent titles and abstracts written in English — using clear, consistent, industry-specific terms. You can include DWPI records in your Delphion Work Files providing an ideal way for groups of users to share and collaborate on research findings. Delphion Data Extract enables export of DWPI data in a variety of formats — including one for Derwent AnalyticsSM. This is the only export in which DWPI data can be combined with patent office data in a format specifically designed for Derwent Analytics, a powerful Thomson data mining application. You can also analyze your DWPI data with Snapshot and Clustering — and you can bulk download PDF images using PDF Express. Delphion allows you to combine the power of DWPI data with the easy-to-use collaboration, analysis, and productivity tools for which Delphion is well known. Coverage DWPI covers more than 13 million inventions from over 40 different international patent-issuing authorities. More than 350 industry specialists in Chemistry, Engineering, Life Science, and Electronics do the classification and indexing. Derwent experts review approximately 27,000 patent documents every week — there are 22.5+ million patent documents currently in the database and 1.5 million records are added each year. DWPI on Delphion Searching DWPI on Delphion is fast and easy — in addition to simple keyword searching, you can search by accession or patent number, Boolean text, and multiple text fields. See the difference in the enhanced Derwent title and abstract shown following:   And, when you search DWPI on Delphion, your Derwent Record is enhanced with INPADOC Legal Status information as well as the original claims — so you no longer have to do a separate search to see this valuable information. The Derwent Record also shows the original patent title with a link to the Delphion Integrated View for the original patent allowing you to easily move back and forth between the records for comparison. Delphion is the only place business users can easily access Derwent data — using intuitive search forms — at affordable per-use rates. Pricing DWPI access is available to Unlimited and Premier subscribers on a per-use cost basis. Derwent charges have two components:
Take a Derwent Demo Now Delphion makes one week of Derwent data available for demonstration purposes — at no charge — to Delphion Unlimited and Premier subscribers. Try it and see how Derwent can enhance your research: Extensive Help is available for DWPI on Delphion in the Delphion Help Center. Search Derwent Now Follow these links to begin your searching now:
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