"Universal City Studios, Inc. v. Nintendo, Co., Ltd." was heard at the United States District Court for the Southern District of New York by Judge Robert W. Sweet. The trial lasted seven days, during which Universal, represented by the New York firm Townley & Updike, argued that the name "Donkey Kong" could be confused with "King Kong" and that the plot of the game was an infringement on that of the film. Kirby showed key differences between "Donkey Kong" and "King Kong". He also alleged that Universal had no rights to the "King Kong" characters and that they had in fact successfully sued RKO Pictures in 1975 in "Universal City Studios, Inc. v. RKO General, Inc.", wherein they proved that the plot of "King Kong" was in the public domain and thus opened the way for Dino De Laurentiis's remake.