Updates on Y02 and Y04S

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  • The Y-tags are updated by running search algorithms designed by expert examiners, i.e. they depend on other classes.

    On 01 January 2013, the EPO and USPTO jointly launched the Cooperative Patent Classification (CPC), replacing the European Patent Classification (ECLA) and other codes that were used in the search algorithms to allocate the Y02 and Y04S tags.  Due to the CPC and related IT changes, the search algorithms and associated update processes have been revised.  These changes will also allow us to update the Y-codes with a higher frequency in the future.

    The current update status is as follows:

     Section Status
    Y02B (Buildings) November 2016
    Y02C (Capture and storage of greenhouse gases)  November 2016
    Y02E (Production, distribution and transport of energy) November 2016
    Y02T (Transportation) November 2016
    Y02W (Waste and wastewater)  November 2016
    Y02P (Industry and agriculture)   November 2016
    Y04S (Smart grids) November 2016

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