In an intellectual property fight over computer software for processing copyright and trademark applications, a Southern District judge has ruled that the copyright interest in the software product may be infringed even if the codes used in the second program are different.

Judge Loretta A. Preska said in a detailed 27-page decision last week that similar user interfaces, even if generated by different programs, can give rise to a cause of action for copyright infringement by the original developer of the interface.