US Court Adds Confusion To #Trademarks29/09/2015 by Steven Seidenberg for Intellectual Property Watch Leave a CommentOnce, hashtags (like #cute_cat) merely identified topics on Twitter, Facebook, and other social media. No longer. A rapidly growing number of companies are using hashtags (like #HowDoYouKFC) as trademarks. There is one problem, however. A court in the US has recently ruled that hashtags can never receive trademark protection.