http://www.epo.org/service-support/availability-of-online-services/2018/20180423a.html
Content reproduced from the Website of the European Patent Office as permitted by their terms of use.
We are currently
experiencing some issues with the European Patent Register.
Users are seeing a message “Your connection is not secure / There is a
problem with this website’s security certificate / Your connection to this site
is not secure “.
This is caused by an elapsed
security certificate.
Customers can still access the
Register by selecting “Continue to this website / Advanced -> Add exception
/ Advanced -> Proceed to register.epo.org”
Our technicians are working to fix the
problem as soon as possible.
We
apologise for any inconvenience.