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.



Learn More About STN
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STN News - What's New on STN

   October, 2015 | Highlights from the PIUG 2015
   Northeast Conference
   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


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STN Training

Training Events
     The Secret Life of CAplus
      November 24, 1pm EST

     New STN: Introduction (presented in French)
      December 1, 9am EST

     Unified Markush Search on new STN
      December 1, 9am EST
      December 1, 1pm EST

     Exploring GENESEQ(TM) (DGENE) on STN
      December 8, 4am EST
      December 8, 9am EST

     Derwent Markush Resource (DWPIM) now 
      available on STN!
      December 10, 4am EST
      December 10, 9am EST
      December 10, 2pm EST

     Structure Searching on new STN
      December 15, 1pm EST
      December 17, 9am EST
Click here to Register

STN Support