Copyright infringement suits hang over two highly anticipated blockbuster sequels set for release over the Memorial Day weekend.

In one case, a federal district court judge in Missouri ruled Tuesday that The Hangover Part II could open as scheduled Thursday, despite an attempt by tattoo artist S. Victor Whitmill to enjoin the film over its use of boxer Mike Tyson’s famous face tattoo. Whitmill created the tattoo for Tyson, and it appears in the movie encircling the left eyes of both Tyson, who makes a cameo appearance, and the character played by actor Ed Helms.