A Guide to the CPC Search Tool on Espacenet

We’ve been following the development and roll-out of the Cooperative Patent Classification (CPC) over the past year, from the initial release of the CPC scheme to a guide describing how major patent search systems will integrate the CPC into their search features. The CPC has already replaced ECLA as of January 1, 2013, and the Espacenet search system has been updated to reflect these changes. The CPC replaces ECLA in the classification section under the Advanced search form on Espacenet, and the CPC search tool is now available on Espacenet under the “Classification search” option.  The tool allows users to keyword search or browse through the CPC hierarchy, view code definitions, notes, and warnings, and select codes to add to the Advanced search form or use to search directly for patent records.

Continue reading for a visual guide to every feature within the CPC search tool on Espacenet!

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Updates to the Largest Markush Search Databases: MMS and MARPAT

Do you know the best resources for searching Markush chemical structures in patent documents? If you need to freshen up your Markush search skills, then you’re in luck.  Intellogist Reports on two of the largest sources of Markush data, Merged Markush Service (MMS) and MARPAT on STN, have both been fully updated, and we’ll look at some of the most important recent changes to these databases. The Merged Markush Service (MMS) is a generic chemical structure file which is linked to two bibliographic data files, the Derwent World Patents Index, produced by Thomson Derwent, and the Pharm (formerly Pharmsearch) file, produced by the French Patent Office (INPI).  MARPAT, produced by CAS and FIZ-Karlsruhe,  contains only patents which have been indexed into the CAplus database and which generically disclose/claim chemical structures.

Last week we looked at major updates to the STN platform, on which you can search MARPAT.  The content of the MARPAT database has undergone a lot of recent improvements, with new country coverage, more structure images, and additional backfile coverage from 1987 added to the file. Meanwhile, users can now search the MMS file through a new platform produced by ChemAxon.  After the jump, we’ll look at updates to both the search features and content of MARPAT and MMS.

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