In 2009, Paula Petrella filed an action for copyright infringement, unjust enrichment and accounting against Metro-Goldwyn-Mayer, Inc.; Metro-Goldwyn-Mayer Studios, Inc.; Metro-Goldwyn-Mayer Home Entertainment, LLC; Metro-Goldwyn-Mayer Home Entertainment Distribution Corporation; United Artists Corporation; and 20th Century Fox Home Entertainment, LLC (“the defendants”). According to Petrella, the defendants infringed her purported interest in a book and two screenplays that together allegedly formed the basis for the 1980 motion picture Raging Bull. The district court granted summary judgment in favor of the defendants, holding that Petrella’s claims are barred by the equitable defense of laches. The district court also denied the defendants’ motions for sanctions and attorney’s fees. We affirm.