Celebrating 60 years of Derwent World Patents Index

Placing the world’s innovation at your fingertips since 1963.

For over 60 years, Derwent World Patent Index™ (DWPI™) has helped IP professionals and inventors capture better insights from the world’s patent data.

  • IP professionals use DWPI to make higher confidence patentability and freedom to operate decisions
  • R&D leaders use DWPI to determine where to focus investment and identify new development partners
  • Patent examiners at 40 national patent offices use DWPI to help examine patents more efficiently ​

DWPI: 6 decades of more informed decisions​

  • 1963: Derwent is created 

    Chemical Structures with detailed descriptions coded onto IBM punch cards.
  • 1974: DWPI expands

    World Patents Index added; coverage expanded to include mechanical, electrical engineering and electronic technologies. 
  • 1993: DWPI goes digital

    Enhanced polymer indexing becomes available online.  
  • 2000: DWPI celebrates major achievements

    Monty Hyams named first recipient of the International Patent Information (IPI) award at PIUG national meeting.  DWPI coverage reaches 20 million patents.
  • 2013: DWPI extends its global reach

    DWPI expanded to 50 jurisdictions. Coverage surpasses 50 million patents.
  • 2023: DWPI celebrates 60 years

    Coverage surpasses 110 million patents.  

National patent offices use DWPI in examination


Patent editors analyze and summarize new patents into easy to read abstracts

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Patent publications covered by DWPI abstracts clearly summarizing novelty, use and advantage


Global sources including 59 patent-issuing authorities and 2 literature sources

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Priority errors corrected every week on average by DWPI editors

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DWPI families group patents by distinct invention

Decades of insights, powered by human intelligence

Exploring the world’s patent data is now easier than ever.

  1. Quickly find the right insights
    DWPI abstracts are written in standardized language, allowing you to find more relevant patent publications using keyword searches.
  2. Understand what an invention covers, in less time.
    DWPI abstracts are written by technologists with deep domain knowledge. Abstracts clearly state the invention’s novelty, use and advantage, allowing you to quickly review patent publications and understand their claims.
  3. Evaluate global invention activity for a specific technology
    DWPI indexes the world’s inventions into 322 technology classes, making it easy to review inventions from all major jurisdictions related to a specific technology.
  4. Innovate with confidence
    DWPI uses a proprietary process of machine learning and manual review to cleanse, normalize and fill in missing data, such as inventors, assignees and class codes, so that you can make decisions with confidence.

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