The prospect of lengthy litigation is particularly precarious for the owners, since damages are triple if a trial determines owners violated antitrust laws.
Several Bollywood studios in India are setting up a trial this fall in which phone owners can aim at a movie poster and download ringtones based on songs from those films.
"We made a promise to have a fair trial based on the law of the land and we wanted this historical trial to be just and fair in order to give the rights to its true owners, no matter what the sentence will be, " he said.