Quilting is not as 'big' in most of Europe as it is in the US, so fewer shows (and smaller audience, lol). There is a link to the French Patchwork Europe website
here. I think this is the biggest show and the only one I can find.
Link to this year's Expo Berlin
here. I had a quick look at the participants - seems
very small.
Also, there a couple of board members from the armed forces currently posted to Germany who may be able to help with Germany. You can find them by doing a Member Search by 'Location'.
Next time I'm in my LQS (only one, lol) I'll ask the owner if she knows of any. Good luck