The Moroccan chewing gum company, Maghreb Industries (www.maghrebindustries.com) registered @GUM as trademark.
Wrigley vs. Perfetti 19/11/2014
I copy here the link to the news published to day in www.confectionerynews.com about the legal battle between Wrigley and Perfetti over the “WTF” trademark.
Wrigley considers that “WTF” can somehow overlap or coincide with their well-known brand “Winterfresh”. I have no other news about this issue other than the one appeared in this article, so I better just invite you to read it here