Patent Prior art

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john21wall
Posts: 1
Joined: Wed Jun 28, 2017 11:01 am
Location: new york
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Patent Prior art

Post by john21wall » Wed Jun 28, 2017 1:03 pm

Can a granted patent be cancelled if prior art was not discovered ?
Let's say I have been selling a new widget for some years and someone
else patents the same widget.
Can the original maker of the widget shout out or would it be too late ?


EPO / Patent Information
Posts: 462
Joined: Wed Nov 12, 2014 3:36 pm

Patent Prior art

Post by EPO / Patent Information » Thu Jun 29, 2017 4:00 pm

Hi John21wall,

Here's a link to the Opposition procedure.

It is possible to oppose the decision to grant a European Patent within 9 months of the grant being mentioned in the European Patent Bulletin.
Kind regards,

The Patent Information User Support Team


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