https://www.epo.org/en/service-support/faq/myepo-services/third-party-observations/general-information

General information

General information

Questions and answers

FAQ

Am I allowed to write to the EPO about a patent application filed by another company concerning a product developed by our company?

Yes. Under Article 115 EPC, any third party may file observations concerning the patentability of an...

FAQ

How can I submit observations about a published application or granted patent?

By post or online:

using the EPO's online filing software or Online Filing 2.0
using the EPO's o...

FAQ

May I raise objections against an international patent application?

Since 2 July 2012, third parties have been able to submit observations to the International Bureau...