User blog comment:Slimebeast/Vincent V Cava trademarked "Creepypasta"/@comment-25148755-20160209141447

I guess I'm curious how it works legally. Aside from it being a dick move, I wonder if there's precedence for grandfather exemption for properties that can firmly establish existence and use of a word later trademarked before it was registered (this website, for example), especially when it is readily apparent the tm holder did not create the term in question.