According to this article [1] on Wikipedia about unregistered trademarks there could be some legal issues. These might become even bigger if either one you dec

According to this article [1] on Wikipedia about unregistered trademarks there could be some legal issues. These might become even bigger if either one you decides to actually register the trademark (or has already done so). In other words: Go and see if you can get some advice from a attorney specialized in intellectual property law [1] https://en.wikipedia.org/wiki/Unregistered_trademark https://en.wikipedia.org/wiki/Unregistered_trademark