There's been lots of talk about DC Comics character Nightwing lately. Nightwing is rumored to have a significant part in the upcoming Batman Vs. Superman movie.
There have also been rumors that Nightwing could make an appearance on The CW's Arrow. The city of Bludhaven has been referenced on Arrow, and Bludhaven happens to be Nightwing's current base of operation. Actor Steven McQueen even dropped some hints about being in training to play Nightwing and about having superhero conversations with Arrow executives.
When DC Comics filed a couple trademark registrations for Nightwing a couple weeks back, many took it as a sure sign that these trademark registrations were for products associated with Nightwing's appearance in Batman Vs. Superman. DC Comics registered the Nightwing trademarks for the toys and sporting goods category and the clothing for men, women and children category.
When DC Comics initially filed for the trademark registrations, only a description of the Nightwing design that was being trademarked was available. From the description, the design sounded a lot like the current Nightwing comic book logo. Now, an image of the Nightwing design that DC Comics is trademarking has been made available, and it is exactly the same as the current comic book logo.