Training Center

To search for words containing your search term, please add an asterisk '*' BEFORE or BEHIND your search term. Example: *connect* finds 'Reconnection'.

Please visit the CAS STNext® Training Center operated by CAS, which also offers a full range of CAS STNext® resources and webinars.

Recorded e-Seminars

  • Recorded e-Seminars

    STN Coffee Lecture: HELP! – Retrieve online assistance whenever needed with the HELP command

    With HELP you can ask the system for information regarding the database content, pricing structure, searchable fields, display formats, use of a command, etc. in a specific database.
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  • Recorded e-Seminars

    STN Coffee Lecture: AI-based prior art technology in STNext

    CAS has developed an AI-based prior art search technology which makes use of the controlled terminology and substance indexing as well as IPC classifications of an initial patent publication that serves as the starting point.
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  • Recorded e-Seminars

    Getting started with STNext - A guided on-line tour to ease your transition

    This e-seminar supports your transition to STNext, and provides an overview of the interface as well as the essential features and functionalities.
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  • Recorded e-Seminars

    STN Coffee Lecture: Understanding Derwent’s DCRs, DCNs and DRNs

    The Derwent indexing system has had different numbering systems for substance records over the years.
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  • Recorded e-Seminars

    STN Coffee Lecture: Legal Status categories in INPADOC databases on STNext

    FIZ Karlsruhe creates value-add categories for legal status events and adds them to the INPADOCDB and INPAFAMDB databases
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  • Recorded e-Seminars

    STNext: Tips and Tricks

    This e-Seminar will answer questions that have been asked of the CAS and FIZ helpdesks, along with little-known tricks that will help improve your interaction with the STNext platform.
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  • Recorded e-Seminars

    Virtuelles STN User Meeting 2021 in deutscher Sprache

    Präsentationen zu Neuigkeiten in STNext, der neuen Struktur des Derwent World Patents Index, CAS Scientific Patent Explorer, CAS Biosequences, Rechtsstandsüberwachung mit FIZ PatMon und Chemscape
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  • Recorded e-Seminars

    Searching for Uncommon Sequences on STN

    Searching for sequences which incorporate uncommon amino acids or nucleotides can be a challenge for even the most experienced searchers.
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  • Recorded e-Seminars

    Search Strategies at the Interface of Chemistry and Biology: Immunoconjugates

    The rapid convergence of the traditionally defined disciplines of chemistry and biology and the content resources in these areas create challenges and opportunities for many types of searches.
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  • Recorded e-Seminars

    Searching CRISPR Target Sequences in DGENE on classic STN

    STN's sequence databases allow for both comprehensive and precise searching for published sequences, and sequence search strategies can be applied to even cutting-edge techniques and processes.
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  • Recorded e-Seminars

    Sources and Techniques for Searching Alloys on classic STN

    This e-Seminar highlights the major sources of alloy information on STN and exemplify techniques to retrieve highly relevant results on classic STN.
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  • Recorded e-Seminars

    Legal Status Information on INPADOC

    The International Patent Documentation file (INPADOC) is a global collection of bibliographic and legal status information.
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  • Recorded e-Seminars

    Numeric Property Searching in STNext – Case Studies from DWPI

    The unique Numeric Property Search (NPS) feature offers exact value and range search options for 59 physical and chemical properties, for example ENERGY (/ENE) or PRESSURE (/PRES), indexed from 1,800 original units.
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  • Recorded e-Seminars

    Engineering & Material Science Searching on STN

    STN offers a great variety of databases in the fields of Engineering and Material Sciences.
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  • Recorded e-Seminars

    The CPC as a Search Tool - Mind the Gap(s)

    The Cooperative Patent Classification (CPC) has been established as a high precision search tool for accessing world-wide patent literature.
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  • Recorded e-Seminars

    Automating Searches with STN: Part 2 - Introduction to Basic Scripting

    Scripts allow you to automate searches by encoding the full STN command language, assigning variables and allowing for user prompts.
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  • Recorded e-Seminars

    From Start to Finish - Using a Multi-file Approach for Chemical Queries and Creating Virtual Records

    A case study demonstrates many tips and tricks for solving a search question from the chemical area using multiple sources (REGISTRY/CAplus, DCR/DWPI, and the full-text patent databases.)
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  • Recorded e-Seminars

    I Didn't Know You Had That! - Improving Your Search Results with Lesser Known Data in STN Databases

    We show how to improve your searching by using Digital Object Identifiers, Electronic Publication Dates, Numeric Property Values, Patent Expiration Dates, and precision searching of term fragments within words.
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  • Recorded e-Seminars

    The Derwent Markush Resource (aka DWPIM) on STNext

    In this e-Seminar you learn about the content and features of the Derwent Markush Resource database on the STNext platform.
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  • Recorded e-Seminars

    In-depth Structure Searching in DWPIM on STNext - Best Practices

    This e-Seminar will discuss in-depth structure search strategies, including node types, and attributes for nodes and bonds. This session will also explain the relationship between the STN generic nodes and the Derwent superatoms.
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  • Recorded e-Seminars

    Biosequence Searching on STN - Comprehensive and Precise

    STN offers multiple sequence databases, with unsurpassed content covering nucleotide and amino acid sequences from patents and scientific literature around the world.
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  • Recorded e-Seminars

    Automating Searches with STN: Part 3 - Monitoring a Large Number of Structures or Patent Numbers

    The scripting feature is a powerful search tool unique to STN which is mainly used by experts to automate the STN retrieval.
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  • Recorded e-Seminars

    Citations: Stepping Stones in your Search

    STN offers many sources of citation information that increase your search efficiency. This e-seminar helps you to discover the wealth of citation information in the various databases on STN,
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  • Recorded e-Seminars

    DWPIM on STNext: Introduction and New Functionality

    In this e-Seminar you learn about the content and features of the Derwent Markush Resource database on the STNext platform.
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  • Recorded e-Seminars

    Searching Value-Added Derwent Polymer Indexing in DWPI on STNext

    Polymer searching is a uniquely challenging prospect, given all of the various ways polymers can be described in patents and the frequent need to also search for relevant properties and applications.
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  • Recorded e-Seminars

    Multifile Structure Searching on STNext Why is it Important? How is it Done?

    This session explains why various indexing policies, document coverage and other differences require searches in the Derwent Chemistry Resource and Derwent Markush Resource databases, plus the CAS REGISTRY and MARPAT databases for comprehensiveness.
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  • Recorded e-Seminars

    Get the Best Out of Derwent Markush Resource (DWPIM) on STNext

    In this e-Seminar we address important key aspects and characteristics of DWPIM on STNext, including matching, bond values and XX in rings. Recent developments, best practice and potential pitfalls are also discussed.
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  • Recorded e-Seminars

    The Derwent World Patents Index Database on STN – An Overview of the Value-Added Information and Features (Part 1)

    The Derwent World Patents Index (aka DWPI on STN) is a world-class value-added patent family database, produced by Clarivate Analytics. The database includes many unique data points with specific search options on STN,
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  • Recorded e-Seminars

    Get First Insights into STN

    STN, an online database service, integrates the world‘s largest and most important value-added databases for sci-tech and patent information on one platform.
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  • Recorded e-Seminars

    Searching Surfactants and Detergents on STN

    This session will explore how surfactants are covered in the CAS and Derwent suite of databases. The rules for indexing of individual surfactant classes in these databases will be discussed on the basis of examples.
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  • Recorded e-Seminars

    Introduction to the Derwent World Patents Index on STNext

    Discover the entry point to global patent information on STNext! Derwent World Patents Index (DWPI) is the world’s most comprehensive value-added database of international patent information covering all aspects of science and technology.
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  • Recorded e-Seminars

    STN Coffee Lecture: Getting a First Overview of STN Search Results - Postings and their Settings

    Learn more about postings of a standard keywordsearch and postings in a multi-file environment.
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  • Recorded e-Seminars

    Automating Searches with STNext: Introductory Session

    Scripts allow you to automate searches by encoding the full STN command language, assigning variables and allowing for user prompts.
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  • Recorded e-Seminars

    Quick start with STNext

    We begin this e-seminar with an online tour through STNext: from file management, to your settings, the various tabs and as well the STNext structure editor.
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  • Recorded e-Seminars

    Added Value in Full-text Patent Files

    STN has a large collection of first-level, full-text patent databases in addition to our familiar value-added indexed files. This e-seminar covers the benefits of using these full-text databases to make your searches more comprehensive.
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  • Recorded e-Seminars

    Structure Searching in the Derwent Chemistry Resource (DCR) – An Easy Recipe to Get Started

    In this e-Seminar you learn about the content and features of the Derwent Chemistry Resource (DCR), the part of the Derwent World Patents Index (DWPI) that covers specific chemical substances incl. a workflow for structure searching in DCR & CAS Registry.
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  • Recorded e-Seminars

    CAS Formulations - Overview and Practical Search Strategies

    CAS Formulations on STNext provides a deeper indexing of active and inactive compounds found in formulations.
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  • Recorded e-Seminars

    Migrating to STNext - Essential Features and Functionalities

    This e-seminar supports your transition to STNext, and provides an overview of the interface and features. Learn how STNext improves searching while supporting the highly valued functionality of classic STN.
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  • Recorded e-Seminars

    Multi-Database Structure Searching on STNext

    This session explores the benefits of multi-database structure searching on STNext. We start with a general introduction of the four structure databases Derwent Chemistry Resource (DCR), Derwent Markush Resource (DWPIM), CAS REGISTRY and MARPAT.
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  • Recorded e-Seminars

    The STNext Structure Editor

    This e-Seminar focus on structure searching on STNext. The STN structure editor is explained in detail, including how to draw a structure using specific atoms and/or rings, shortcuts, variables, and STN generic nodes.
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  • Recorded e-Seminars

    New Team Members for Numeric Property Searching on STNext – the USPAT databases

    The numeric property search (NPS) feature has been added to the patent databases USPATFULL and USPAT2, allowing STNext users to easily retrieve exact values or ranges for 60 physico-chemical properties in the US patents’ full-text.
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  • Recorded e-Seminars

    STN Coffee Lecture: W, 5A, L, S or P? – Proximity Operators for Precise Retrieval

    A general overview about the proximity operators and some ideas on how to use them for specific questions.
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  • Recorded e-Seminars

    STN Coffee Lecture: Identify the best databases for your search topic – tips around the INDEX command

    The INDEX command is used to access STNindex and to identify the files to be scanned. STNindex is used to determine which databases contain information on a search topic before entering those databases.
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  • Recorded e-Seminars

    STN Coffee Lecture: Technology Focus, Use, Advantage, etc – Benefit from the Highly Structured Derwent Abstract

    Learn more about key value of the Derwent World Patents Index (DWPI).
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  • Recorded e-Seminars

    STN Coffee Lecture: Command Window – a Simple but Powerful Feature

    A few tips and tricks on how to use the command window.
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  • Recorded e-Seminars

    Structure Searching on STNext – The Final Episode

    This session covers in more detail some concepts discussed in the previous sessions on Multi-database Structure Searching on STNext and The STNext Structure Editor, as well as answering questions that have been received.
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  • Recorded e-Seminars

    STN Coffee Lecture: Using the Patent Family Manager in STNext to Increase Efficiency in Patent Searches

    The broad INPADOC patent family comprises all patent publications directly or indirectly linked via priority number(s). CAplus and Derwent World Patents Index select the basic patent for indexing.
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  • Recorded e-Seminars

    STN Coffee Lecture: Customize your STNext Experience with SET Commands

    SET commands have impact on various parts of your online session. We will look at some of the more popular and useful SET commands in each of these parts.
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  • Recorded e-Seminars

    STN Coffee Lecture: STN Clusters - How to find what you are looking for when you don't know where to look

    STN Clusters are a group of databases, that were put together if they cover the same or similar subject area.
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  • Recorded e-Seminars

    Increase the Relevance and Insight of your STNext Search Results with the Analyze Command

    STNext offers two ways to use the ANALYZE (ANA) function: via a graphical user interface or the command line. In this e-seminar we discuss the options offered by the graphical user interface, including data export to Excel.
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  • Recorded e-Seminars

    Control Substitution and Ring Fusion in STNext Structure Searches

    Setting up structure queries for efficient Substructure and Closed Substructure Searches are discussed and exemplified in this STNext e-Seminar.
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  • Recorded e-Seminars

    STN Coffee Lecture: Don’t be afraid of Markush – Tips from the FIZ Search Service

    STN Coffee Lecture about markush structures: what they are, why they are used in patents, and where to search Markush structures.
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  • Recorded e-Seminars

    STN Coffee Lecture: NOT in Detail – How to Use the NOT Operator in Keyword Searches

    The NOT operator is very helpful in developing search strategies: NOT subtracts one answer set from another answer set, allowing efficient analysis of the changes made to a query.
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  • Recorded e-Seminars

    STN Coffee Lecture: Automate your Search - The Potential of STN Scripts Demonstrated by some Selected Examples

    Get a short explanation of STN Scripting and see some use cases as well as a live script in STNext.
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  • Recorded e-Seminars

    STN Coffee Lecture: Controlled Terms (CT) in the Various Databases – How to Explore and how to Use

    A general introduction into thesauri on STNext.
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  • Recorded e-Seminars

    STN Coffee Lecture: Getting to Know your Competitor - Searching Licensing and Company-related Information on STNext

    Quick demonstration how to find information beyond research and development activities of a certain company, which of course can be tracked down in the respective STN patent databases.
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  • Recorded e-Seminars

    Virtuelles STN User Meeting 2020

    Präsentationen zu Neuigkeiten in STNext, CAS Formulations, Numeric Property Search und neuen Recherchemöglichkeiten in den CAplus Patentansprüchen.
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  • Recorded e-Seminars

    INPADOC on STNext Reloaded - Enhanced Content, Additional Functionality

    INPADOC on STN is based on the patent bibliographic and legal status data from the European Patent Office. In addition, FIZ Karlsruhe's Patent Editorial adds value with intellectual corrections and quality assurance.
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  • Recorded e-Seminars

    STN Coffee Lecture: How much Glyphosate Contains my Beer? – Case Studies from the Analytical Abstracts Database on STNext

    Quick demonstration how to retrieve records describing analytical studies for any given substance or substance class in the Analytical Abstracts Database on STN.
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  • Recorded e-Seminars

    STN Coffee Lecture: Get to Know the Family – Information from the Derwent Bibliography

    STN Coffee Lecture about family information in the Derwent World Patents Index (DWPI).
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  • Recorded e-Seminars

    STN Coffee Lecture: Rethink your Structure - Tips from the FIZ Search Service

    STN Coffee Lecture about a typical structure search question.
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  • Recorded e-Seminars

    Claim Text on STNext

    Claim text has been added to CAplus, now allowing STNext users to search and display claims in both value-added databases CAplus and Derwent World Patents Index (DWPI) as well as in the full text databases.
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  • Recorded e-Seminars

    Online Thesauri and the CA Lexicon

    Multiple databases on STNext provide online thesauri for one or more search fields including indexing terms. The CA Lexicon is the thesaurus for the Controlled Terminology (CT) field for the CAplus database.
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  • Recorded e-Seminars

    STN Coffee Lecture: Keeping Baby's Bottom Dry - A Quick Guide to Polymer Searching on STN

    A brief introduction into the basic concepts of polymer searching on STNext.
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  • Recorded e-Seminars

    STN Coffee Lecture: Getting to Know the Family with FFAM - The INPADOC Display Format Explained

    STN Coffee Lecture about the the overall content of Inpadoc on STN and some ideas to answer questions regarding patent families.
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  • Recorded e-Seminars

    STN Coffee Lecture: TRANSFER Command on STNext - Tips and Tricks

    A few tips and tricks on using the TRANSFER-command on STNext.
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  • Recorded e-Seminars

    STN Coffee Lecture: The Value of Intellectual Substance Indexing – A Comparative Approach

    Use one single query structure for all structure files. Each file has unique content!
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  • Recorded e-Seminars

    STN Coffee Lecture: Non-Patent-Literature: A Hidden Treasure - Tips from the FIZ Search Service

    A brief introdution into non-patent literature including some useful database features and search options on STN.
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  • Recorded e-Seminars

    New REAXYSFILE Databases on STNext

    The new databases ReaxysFileSub and ReaxysFileBib on STNext, including up-to-date substance and bibliographic info, expand the already impressive coverage of chemical substances from publications worldwide on the platform.
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  • Recorded e-Seminars

    Chemical Information à la Carte – the STNext Multi-file Menu now Refined with ReaxysFileSub

    STNext combines databases from CAS, Clarivate and Elsevier, the world's leading providers of chemical information, on a single platform, making it the most comprehensive source for searching high-quality chemical information.
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  • Recorded e-Seminars

    A Sticky Topic - Polymer Searching on STNext

    Polymer searching is a uniquely challenging prospect, given all of the various ways polymers can be described in patents and the frequent need to also search for relevant properties and applications.
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  • Recorded e-Seminars

    STN Coffee Lecture: Five Good Reasons to Switch to STNext

    STNext STNext: the premier single source for searching the world's disclosed scientific and technical research
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  • Recorded e-Seminars

    The Kinetics of Searching Catalysts on STNext

    Catalysts play a vital role in lowering activation energies for chemical reactions. This webinar provides further insights in the indexing and registration policies in CAS and Derwent files for some of the most common types of catalysts.
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  • Recorded e-Seminars

    STN Coffee Lecture: Time for Spring Cleaning – Working with Transcripts on STNext

    A few tips and tricks on working with transcripts on STNext.
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  • Recorded e-Seminars

    STN Coffee Lecture: Meet the Database FSTA - Food Science and Technology Abstracts

    The Food Science and Technology Abstracts database provides worldwide coverage of all health, scientific and technological aspects of the processing and manufacture of human and pet food and beverage products.
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  • Recorded e-Seminars

    STN Patent Forum - PIUG

    Get the latest news on STN and development of various databases on the STNext platform as well as more information about a Freedom to Operate (FTO) search, which is one of the fundamental approaches that all Intellectual Property searchers must master.
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  • Recorded e-Seminars

    Stay Up to Date with Alerts in STNext

    Automated alerts are a great tool to receive regular updates on the most recent publications in a specific scientific or technological area without the need to actually run the search again in STNext. In this respect, STNext offers various alerting...
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  • Recorded e-Seminars

    STN Coffee Lecture: Who Wrote That? Searching for Authors and Companies on STNext

    A few tips and tricks on how to search for author names and company names more efficiently on STNext.
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  • Recorded e-Seminars

    What's New on STNext?

    Get the latest news on STN and development of various databases on the STNext platform including reorganization of the Derwent databases on STNext.
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  • Recorded e-Seminars

    Using the Derwent Manual Codes on STNext

    The Derwent Manual Codes are a powerful tool to be used for subject searching in the Derwent World Patents Index database.
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  • Recorded e-Seminars

    STN Coffee Lecture: Optimizing STN Settings for Custom Search Environment

    STNext includes many settings that searchers can use to customize their search environment and workflow.
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  • Recorded e-Seminars

    STN Coffee Lecture: Optimizing STN Settings for Custom Result Displays

    Changing the ways that search results are displayed can improve workflow efficiency, increase readability of search results, and provide relevant information in concise formats.
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  • Recorded e-Seminars

    Searching Inorganics Part 1 – Alloys

    Searching inorganic substances requires a completely different skill set than searching organic compounds. In this first installment on searching inorganic substances, we take a look at searching alloys.
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  • Recorded e-Seminars

    STN Coffee Lecture: Meet the Database: CABA - CAB Abstracts Database

    The CAB Abstracts database covers worldwide literature from all areas of agriculture and related sciences including biotechnology, forestry, and veterinary medicine.
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  • Recorded e-Seminars

    STN Coffee Lecture: Working with Saved Answer Sets, Queries and Lists on STNext

    Information generated during a STNext online session can be retained for later use or reuse by applying the SAVE command.
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  • Recorded e-Seminars

    Antibody Drug Conjugates - Ferrying a Drug into a Tumor Cell Using Specific Immunoconjugates

    Immunoconjuagtes, also known as antibody drug conjugates (ADCs), are an emerging class of biopharmaceutical drugs designed for targeted cancer therapy.
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  • Recorded e-Seminars

    STN Coffee Lecture: Meet the Database - NTIS

    The National Technical Information Service database NTIS is the world’s most comprehensive collection of U.S.-sponsored research. This database contains unique scientific research and information compared to other databases on the platform.
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  • Recorded e-Seminars

    STN Coffee Lecture: Hidden Treasures of your Session History

    The session history within STNext offers much more than only showing the result counts for each search. This Coffee Lecture will reveal some of these hidden treasures.
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  • Recorded e-Seminars

    Patent Family Information on STN - How to benefit from high quality resources

    Reliable patent family information is of great value to IP professionals when assessing the global legal protection of individual inventions. STN offers high quality data from three major patent family databases, including the DWPI, CAplus and INPADOC.
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Interactive Learning

  • Interactive Learning

    STN Bibliographic Searching - Interactive e-Learning Tutorials

    This collection of training resources are organized into self-guided learning paths and are designed to guide you through the basic steps of performing searches in the STN bibliographic databases. Basic search features are introduced.
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  • Interactive Learning

    STN Advanced Bibliographic Searching - Interactive e-Learning Tutorials

    This collection of training resources are organized into self-guided learning paths and are designed to guide you through the basic steps of performing searches in the STN bibliographic databases. Advanced search features are introduced.
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Quick Reference Cards

  • Quick Reference Cards

    CAS Roles in CA/CAplus

    CAS roles are powerful CAS indexing terms that allow you to search for precise information on substances. Roles are assigned to every indexed substance and to controlled index terms for classes of compounds.
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  • Quick Reference Cards

    ANALYZE and TABULATE for statistical analysis

    With ANALYZE, you can easily extract up to 50,000 terms from an answer set for statistical analysis. Use the DISPLAY command to view your analyzed terms as a one-dimensional list.
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  • Quick Reference Cards

    CA section thesaurus

    Use the CA section thesaurus in CA/CAplus on STN to quickly find information on how any of the CA sections may have changed from 1907 to the present.
    Read more
  • Quick Reference Cards

    FSEARCH for finding patent families

    Use FSEARCH (Family SEARCH) to search for additional family records for patents, including equivalents and related patents such as continuations-in-part or divisions.
    Read more
  • Quick Reference Cards

    Patent search fields

    You can use standardized search field codes and formats in searching patent databases on STN.
    Read more
  • Quick Reference Cards

    Citation searching in SciSearch

    You can use citation searching in SciSearch in two ways:
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  • Quick Reference Cards

    Thesauri on STN

    Online thesauri are available in many databases on STN.
    Read more
  • Quick Reference Cards

    CASLink for one-step structure searching in CAS REGISTRY, MARPAT, and CAplus

    Use the CASLINK database cluster for quick, easy, and cost-effective substance searching in REGISTRY, MARPAT, and CAplus.
    Read more
  • Quick Reference Cards

    Basic STN Commands

    These command tables identify both STN command languages: the NOVICE and EXPERT versions of the command.
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  • Quick Reference Cards

    Cited patent searching

    Cited patent numbers are searched in the Referenced Patent Number (/RPN) field.
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  • Quick Reference Cards

    CPC Search and Display

    The Cooperative Patent Classification System (CPC) was developed by the EPO and the USPTO as a common, internationally compatible classification system for patent publications, which will be used by various offices in the patent granting process.
    Read more
  • Quick Reference Cards

    DUPLICATE for identifying or removing duplicate records

    Use the DUPLICATE command to identify or remove duplicate answers. DUPLICATE may be used with L-numbers created in single or multiple databases.
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  • Quick Reference Cards

    INDEX for evaluating databases and searches

    The INDEX command is a cost-effective way to determine which STN databases contain the information you need.
    Read more
  • Quick Reference Cards

    Archive and redistribute results with the STN Information Keep and Share Program

    You may easily purchase the right to keep (archive) and share (redistribute) search results from STN databases in excess of their data use policies.
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  • Quick Reference Cards

    Transfer for crossfile searching

    TRANSFER automatically extracts up to 50,000 terms from an L-number answer set and searches extracted data in one or more target databases.
    Read more
  • Quick Reference Cards

    7 Ways to Revitalize Your Search Experience with STNext

    Learn about the benefits STNext brings to your search workflow.
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  • Quick Reference Cards

    FSORT for grouping patent records into families

    Use FSORT (Family SORT) to group patent records from L-number answer sets into patent families.
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  • Quick Reference Cards

    CAS Registry Motif Sequence Searching

    This card summarizes STN motif symbols and characters as well as types of motif searches on STN.
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Documentation

  • Documentation

    DCR Reference Manual - A supplement for the DERWENT WORLD Patents Index STN online user guide

    The DWPI Chemistry Resource is a chemical structure database for searching specific chemical structures indexed in Derwent World Patent Index (DWPI) bibliographic records.
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  • Documentation

    Mastering STN Commands

    A series of instructional segments to guide users with some prior online searching experience in the effective use of STN commands. Mastering STN Commands gives step-by-step instructions on when and how to use many of the most popular STN commands,
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  • Documentation

    Guide to Commands

    The Guide to Commands is a comprehensive description of the complete array of commands.
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  • Documentation

    STN Index User Guide

    STNindex is a cost-effective, easy-to-use way to determine which STN databases contain the information you need. In STNindex, you can test your search strategy by scanning unfamiliar databases without actually entering them.
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  • Documentation

    DWPI Reference Manual

    Derwent World Patents Index provides access to information from more than 48 million patents, giving details of over 22 million inventions.
    Read more
  • Documentation

    INPADOC Calculated Expiration Date

    The INPADOC databases on STN have been enhanced with calculated expiration dates for granted IP rights of major patent authorities worldwide.
    Read more
  • Documentation

    PCTGEN on STN - Brief Description

    PCTGEN covers all peptide and nucleic acid sequences submitted electronically to theWorld Intellectual Property Organization (WIPO) by patent applicants.
    Read more
  • Documentation

    USGENE on STN - Brief Description

    USGENE covers all available peptide and nucleic acid sequences from the published applications and issued patents of the United States Patent and Trademark Office (USPTO).
    Read more
  • Documentation

    Polymer Information on STN - A Quick Reference Guide

    This quick reference guide, Polymer Information on STN, provides on overview of most STN databases containing polymer information and shows annotated search examples in some databases.
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  • Documentation

    MARPAT User Guide

    The term, MARPAT, is derived from MARkush or generic structures from PATents. MARPAT is the CAS database of Markush structures found in the world’s patent literature.
    Read more
  • Documentation

    Derwent CPI Fragmentation Codes Chart

    Derwent CPI subscribers benefit from the deep indexing of chemical content. This is the table of all CPI chemical codes (also fragmentation codes) for searching.
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  • Documentation

    DWPI Chemical Fragmentation Codes

    This is a guide to chemical structure searching in Derwent World Patents Index (DWPI), including a brief introduction to the Derwent Chemical Resource and a detailed description of using fragmentation codes for chemical substance searching.
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  • Documentation

    Numeric Property Search on STN

    The unique Numeric Property Search (NPS) feature offers exact value and range search options for 59 physical and chemical properties, for example ENERGY (/ENE) or PRESSURE (/PRES), indexed from 1,800 original units.
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  • Documentation

    Adding Value to INPADOC on STN

    INPADOC on STN is based on the world’s largest collection of patent bibliographic and legal status data from the European Patent Office.
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  • Documentation

    CASREACT User Guide

    Chemical Abstracts Reaction Search Service (CASREACT) is a chemical reaction database that contains chemical synthesis information derived from documents from 1840 to the present.
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  • Documentation

    Current Awareness Alerts (SDI) User Guide

    A Current Awareness Alert is a search that runs automatically at a frequency you specify, based on a search strategy you have developed in one or more databases, and delivers the latest results to your desktop.
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  • Documentation

    STNext Quick Start

    Tips for getting startet with the STNext interface.
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  • Documentation

    List of DWPI Acronyms

    These acronyms may be used in DWPI abstracts without defining the full terms. Any other acronyms used will be defined when first used in the abstract.
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  • Documentation

    DWPI Polymer Indexing Dictionary

    The Polymer Indexing Dictionary has been compiled to provide all the information you need to search for polymer concepts in the Derwent World Patents Index (DWPI) from their introduction in 1966 to date.
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  • Documentation

    DWPI Polymer Indexing Hierachy

    The Polymer Indexing system is hierarchical in structure and divided into facets. There are two basic sections to the Code – the Structural section and the Non-structural section.
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  • Documentation

    DWPI Polymer Indexing Reference Manual

    The Polymer Indexing Code List provides an alpha-numerical listing of all the codes in the Polymer Index.
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  • Documentation

    DWPI Polymer Indexing System Description

    Since 1966, Polymer information has been indexed in Derwent World Patents Index from patents classified in Section A. The original Plasdoc Code has undergone many changes since its introduction resulting in the Enhanced Polymer Indexing.
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  • Documentation

    DWPI Polymer Indexing Thesaurus

    The Polymer Indexing Thesaurus provides an alphabetical list of all the main terms and secondary terms or synonyms within the Polymer Index.
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  • Documentation

    DWPI Enhanced Polymer Indexing Workshop

    The Derwent Enhanced Polymer Indexing will be explained in detail. Search examples illustrate how to create polymer search strategies for different polymer classes on STNext.
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  • Documentation

    Command Summary Chart for Bibliographic and Full-Text Databases

    The STN command language is a very powerful tool for searching. This is a brief guide to all the basic and advanced STN commands as reference.
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  • Documentation

    CPC Combination Sets are now completely available in Derwent World Patents Index

    CPC combination sets are groups of CPC symbols linking multiple features of an invention. Patent examiners assign these combination sets in special technical fields to classify different aspects of the main inventive feature.
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  • Documentation

    Cooperative Patent Classification (CPC) Combination Set Data now available in CAplus, INPADOC and USPAT Databases

    CPC combination sets are groups of CPC symbols linking multiple features of an invention. Patent examiners assign these combination sets in special technical fields to classify different aspects of the main inventive feature.
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  • Documentation

    Publication Kind Codes in STN Patent Databases (STN Patent Kind Codes)

    The list provides an overview of all patent publication kind codes (/PK) used in the international patent family databases and patent full‐text databases on STN.
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  • Documentation

    Legal Status Information on INPADOC

    Major Coverage Enhancements for US legal status information in INPADOC
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  • Documentation

    GENESEQ on STN - Short Description

    GENESEQ (file DGENE) covers peptide and nucleic acid sequences from the basic patent publications of 52 authorities of the Derwent World Patents Index (DWPI). This is a short overview with a annotated database sample document.
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  • Documentation

    Derwent World Patents Index - Summary of Kind Codes

    Patent kind codes depend on the patent issuing authority. This is a list for the Derwent World Patents Index on all covered kind codes.
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  • Documentation

    Derwent World Patents Index Manual Code

    Derwent Manual codes are a powerful search instrument for precision and recall. They cover various areas from electrical to chemical patents and are reviewed regularly.
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  • Documentation

    Guide to STN Patent Databases

    This manual is intended for use as a textbook, working book and reference book for patent searching on STN International.
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  • Documentation

    Leitfaden zu STN-Patentdatenbanken

    Dieses Handbuch für Patentrecherchen bei STN International ist als Lehr- und Arbeitsmaterial und als Nachschlagewerk gedacht:
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  • Documentation

    Derwent World Patents Index - EPI Manual Codes

    This User Manual is intended to assist users of the General and Mechanical Patents Index and Electrical Patents Index Service in making the best use of the classification and indexing scheme which Clarivate Analytics applies to all patents covered.
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  • Documentation

    DWPI Patent Assignee Codes (PACO)

    What is a patent assignee code (PACO)? In DWPI we assign each company with a4 letter code.
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  • Documentation

    Derwent World Patents Index - CPI Manual Codes

    Derwent Manual Codes have been developed over a period of more than 50 years, having been first introduced in 1963 when they were applied to patent references of the Farmdoc Service.
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  • Documentation

    INPADOC Priority Information Kind

    List in alphabetical order of all priority application kind codes and their short explanation.
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  • Documentation

    CAplus Core Journal Coverage List

    CAS provides abstracts of articles, and indexes bibliographic, substance, and reaction information from key scientific journals such as those shown below.
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  • Documentation

    CAS Standard Abbreviations & Acronyms

    In CAS databases, certain abbreviations and acronyms are automatically generated for terms in the abstract text, the keyword phrases, and the text modifying phrases for index entries.
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  • Documentation

    The Sections of CA

    You will find that CAS information is divided into 80 different sections. When searching online, you can use appropriate section codes (/SC) as a search term to focus or expand an online answer set.
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  • Documentation

    CAS Coverage of Patents

    CAS covers patents from around the world. Patent records from nine major patent offices worldwide that meet CAS selection criteria are available online in CAplus.
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  • Documentation

    Coverage of CAS Basic Patents by Year

    CAS has covered patents of chemical, biochemical and chemical engineering interest from 1907 to the present.
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  • Documentation

    INPADOC News – Get the Latest Information on the INPADOC databases

    See the latest enhancements to INPADOC, additional authorities, extension of legal event coverage, new functionality and more.
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  • Documentation

    Cluster | Subjects | Features

    STN Databases sorted in Cluster, Subjects and according to their Features.
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  • Documentation

    Derwent Markush Resource Database (DWPIM) on STN - Reference Manual

    Patent literature is considered to be an important source of technical knowledge and it has been stated that a large portion of new knowledge is not published elsewhere.
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  • Documentation

    USGENE Workshop Manual

    The USPTO Genetic Sequence Database, USGENE, is a comprehensive database of annotated protein and nucleic acid sequences extracted from United States Patent & Trademark Office (USPTO) published patent applications and issued (granted) patents.
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  • Documentation

    DGENE Workshop Manual

    GENESEQ (file DGENE) is an intellectually annotated database of protein and nucleic sequences indexed from the basic patent publications of the 51 patent authorities of the Derwent World Patents Index (DWPI) (file WPINDEX).
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  • Documentation

    INPADOC Patent Kind Codes - Country Codes (/PC) with Kind Codes (/PK) and Patent Information Type (/PIT)

    List in alphabetical order of all patent kind codes and their short explanation.
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