Hello,
I'm using an offline version of Patstat 2015. I wanted to know, if there is a posibility to get some kind of main IPC class of an EP-patent. I know that in Patstat is a table called tls209_appln_ipc with the column ipc_position. I think it exhibits the place of naming for the IPC class in an patent specification.
At the USPTO or in german patent data you can find a main class which the patent is assigned to.
Question in terms of IPC classification on Patstat
Re: Question in terms of IPC classification on Patstat
Hi Torben,
I suppose by "main IPC class" you mean the "most representative" of the IPC symbols.
Of all the IPCs assigned, there should always be a "first" IPC (IPC_POSITION = 'F'). However, its meaning depends on the office:
Martin
I suppose by "main IPC class" you mean the "most representative" of the IPC symbols.
Of all the IPCs assigned, there should always be a "first" IPC (IPC_POSITION = 'F'). However, its meaning depends on the office:
- I know that for German publications (and I think also for USPTO) the "first" IPC really is the "most representative".
- For EP, however, the "first" does not have a special meaning. AFAIK the first IPC simply is the first IPC in alphabetic order.
Martin
-------------------------------------------
Martin Kracker / EPO
Martin Kracker / EPO