Delta Force developer NovaLogic is suing Activision for violating its trademark over the use of the Delta Force and a similar emblem in Modern Warfare 3. NovaLogic has held the trademark on Delta Force since 1998, and in its complaint states the term “Delta Force” is not in use by the US government: “The US. Army officially denies that any unit called Delta Force exists and does not claim ownership to either the Delta Force name or the logo.” The firm claims it also issued two cease-and-desist letters to Activision last year, which it claims were ignored by the firm. Nine Delta Force gave have been released, and a tenth titled Delta Force: Angel Falls is purportedly in the works. More on Polygon.