IPC 'Y' classification

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AWFB
Posts: 12
Joined: Mon Oct 22, 2018 6:56 pm

IPC 'Y' classification

Post by AWFB » Fri Oct 15, 2021 10:51 am

The EPO has a 'Y' classification in its IPC database. A search on this code on Espacenet reveals numerous patents have been allocated this IPC code. See for instance: https://worldwide.espacenet.com/patent/ ... 2F10%2Flow

Which relates to Y02E 10/00.

However, if I attempt the same search in PatStat (SELECT COUNT(*) FROM [patstat2021a].[dbo].[tls209_appln_ipc] WHERE ipc_class_symbol LIKE 'Y%'), I get zero results.

The same search works fine for G06, for instance.

Any ideas?


EPO / PATSTAT Support
Posts: 425
Joined: Thu Feb 22, 2007 5:33 pm
Contact:

Re: IPC 'Y' classification

Post by EPO / PATSTAT Support » Fri Oct 15, 2021 11:35 am

Hello AWFB,
your PATSTAT search is searching the CPC classification scheme, not IPC.
If you change it to CPC, you will the results.
In ESPACENET you will find 4 results which are basically some kind of data errors.
We will correct that because the correct result should indeed be zero results, like you find in PATSTAT.
https://worldwide.espacenet.com/patent/ ... %20%22Y%22
PATSTAT Support Team
EPO - Vienna
patstat @ epo.org


AWFB
Posts: 12
Joined: Mon Oct 22, 2018 6:56 pm

Re: IPC 'Y' classification

Post by AWFB » Thu Oct 21, 2021 10:57 pm

Thanks!


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