Still from The Shape of Water

The family of a Pulitzer-winning playwright has filed a copyright infringement lawsuit against director Guillermo del Toro and Fox Searchlight alleging that the Oscar-nominated film, The Shape of Water, is a copy of a 1969 play. David Zindel, son of American playwright Paul Zindel, filed the complaint on Wednesday alleging that Del Toro's critically-acclaimed film has exploited the play, Let Me Hear You Whisper, and should have credited and licensed his father's work.