The Naz Foundation India, a non-governmental organization committed to HIV/AIDS intervention and prevention, filed a public interest litigation in the Delhi High Court challenging the constitutionality of Section 377 of the India Penal Code, which makes it illegal to engage in any "unnatural" sexual act, defined as sex other than heterosexual intercourse. The Delhi High Court dismissed the original writ of petition in 2004 for lack of a cause of action.