http://www.joystiq.com/2014/02/23/gearbox-suing-3d-realms-interceptor-for-unauthorized-duke-nuk/
Gearbox Software filed a lawsuit against 3D Realms (3DR) and Interceptor Entertainment, accusing the studios of unauthorized use of the Duke Nukem property and alleging violation of trademarks held by Gearbox. The lawsuit points to 3D Realms' recent reveal of Duke Nukem: Mass Destruction, which features a teaser site with a timer counting down to February 25.
Among the documents filed in the suit is a breach statement issued by Gearbox stating that 3D Realms infringed on Gearbox's intellectual property in addition to a statement signed by 3D Realms CEO Scott Miller and Duke Nukem co-creator George Broussard that acknowledged the infringement. In a statement filed to Joystiq, Gearbox Software said, "As the filing shows, 3DR's wrongdoing is both admitted and unfortunate for everyone who cares about Duke Nukem."