Yes, but they weren't able to use them for MITM attacks, as seizing servers either equaled to shutting down a service, or allowed service operator to change the keys, so seized keys were useless. Now they feel they have right to obtain the private keys for you, and impose a gag order, so that you cannot change the compromised key.
I doubt that significant amount (if any) of western European countries are able to force you to keep using compromised private key, and keep you silent about this using a gag order.
I doubt that significant amount (if any) of western European countries are able to force you to keep using compromised private key, and keep you silent about this using a gag order.