STN® - The choice of patent experts

As the premier single source for the world's disclosed scientific and technical research, intellectual property professionals and patent examiners at the world's major patent offices and research organizations rely on STN to answer business critical questions and make informed decisions.


Unique Content

STN provides an information advantage. Only STN offers access to the world's scientific information on one integrated platform, including the authoritative chemistry content from CAS and patent content from Thomson Reuters' Derwent World Patents Index®.

Unparalleled Power and Precision

The robust search features of STN give you the flexibility to search as broadly or narrowly as you need, with unique tools and features that specifically address the challenges of searching and analyzing sci-tech, chemical and patent information.

Proven Reliability

STN goes beyond content and tools. As your partner with more than 30 years of dedicated service to professional searchers, we care about the quality of your search results and are ready to help when you need us.



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STN News - What's New on STN

   September, 2015 | PatentPak - A Time Saving
   Solution for IP Professionals - Is Coming to STN
   in Early 2016!
   July/August, 2015 | Latest New STN Release Features
   Eight New Databases Including MARPAT from CAS for
   Markush Structure Searching
   June, 2015 | CAS REGISTRY – 50 Years Strong, 100
   Million Substances Driving Your Research


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STN Training

Training Events
     PatentPak(TM) - a Time-saving Solution Coming
     Soon to STN!
      November 4, 9am EST
      November 4, 1pm EST

     Searching DWPI Polymer Indexing on new STN
      November 19, 9am EST
      November 19, 2pm EST
Click here to Register

    STN Patent Forum
      October 12, 9:00am - 4:00pm EDT
      NE PIUG Meeting, New Brunswick NJ
Click here to Register for the STN Patent Forum

STN Support