Training Center

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DWPI Reference Manual

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DWPI with numeric property search feature

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Adding Value to INPADOC on STN

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

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INPADOC Priority Information Kind

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Legal Status Information on INPADOC

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INPADOC Calculated Expiration Date

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INPADOC Patent Kind Codes

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Guide to STN Patent Databases

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Leitfaden zu STN-Patentdatenbanken

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CAS Coverage of Patents

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

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DPCI Reference Manual - STN Online user guide

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Coverage of CAS Basic Patents by Year

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European Patent Classification EPC

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European Patent Classification ICO "In-Computer Only"

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Global Patent Source - An Overview of International Patents

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Derwent World Patents Index - Summary of Kind Codes

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INPADOC News – Get the Latest Information on the INPADOC databases

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Derwent World Patents Index Manual Code - 2020 Revisions

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STN Patent Kind Codes