Comment by Habgdnv

Well, logically you should be able to keep the old name because you have documented proof that your user base in EU is small enough that this should NOT cause any confusions between your name and the new trademark holder. Just keep the cancellation documents as proof that you use this name but not in EU. This is their claim and not yours, right? The other possibility is that if you have enough users in EU you should also keep the trademark. Only one of these can be true?

Also note that I already lost some court cases using my logic.