Derwent World Patents Index® (DWPI^SM) is the most comprehensive database of value-added patent documents published in the world. Whether you are interested in patents for their technical content, for business planning and development, or for protecting the innovations within your own organization - Derwent World Patents Index will give you the most complete picture possible. 

New Asian content in DWPI expands the coverage further. It includes:

• Japanese Utility Models - Covering all technologies starting with patents published on 10th January 2008 (update 200824)
• DWPI Deep Indexing applied to any Chinese Invention Patents or Chinese Utility Models published from 2nd January 2008 onwards in classification sections ABCE
• Chinese Utility Models now available in DWPI First View within 4 weeks of publication

Derwent World Patents Index's unique value:

• Comprehensive, global coverage of patents from 41 authorities
• Editorially-enhanced, English translations of Asian records
• Robust citation information with the Patent Citations Index
• Deep, rich indexing of chemical and pharmaceutical patents
• Proprietary Manual Coding for even greater precision when searching
• Full coverage of US Classes, ECLA codes and IPCs
• Team of in-house experts correcting errors in original patents & improving searching
• DWPI First View bridges gap between initial publication and enhanced DWPI record
• Plus much more

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