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Update on Cooperative Patent Classification (CPCs) in DWPI

CPC Data published by the US Patent Office (USPTO):

It is expected that the first CPC data will be included on US applications (US-A documents) from 14 March 2013.  For US grants (US-B documents) some CPCs may publish from the end of February.

As soon as this data becomes available from the USPTO it will be included in DWPI.

CPC data published by the European Patent Office (EPO):

The EPO have produced two backfile data sets, both of which are being processed for inclusion in DWPI.

The first records containing CPCs began to appear in DWPI in mid February in records where a new equivalent was added to an existing DWPI family or a correction to a record was made.  

The full load of all backfile data into DWPI will be carried out during May, once both backfile data sets from the EPO have been fully processed.  This is likely to complete by June and will contain CPC data published to the third week of January 2013 along with any European Classifications (ECLA) that have been included in this data.

In July the standard quarterly reclassification update will be applied to DWPI and will include the CPC data published from the 4th week in January onwards.