France is part of the EU so all parts of France can be part of the EU. It's not like French Guiana is a EU member on its own.
Cyprus on the other hand is in Asia and Malta is in Africa. So the EU is willing to push the definition of Europe a bit, but Canada would be a big stretch.
I empathize with Canadians but the EU can't fall on the trap of trying to become the World Government, or worst, the Global White People Federation.
The definition of a "European state" could be interpreted to include Canada. For example:
European State
A sovereign nation whose core cultural, political, legal, and social institutions are fundamentally shaped by European historical experiences and intellectual traditions.
As Europeans, we have a duty to learn the Canadian national anthem and sing it to the heavens! Let our collective voice move the continents themselves!