They claim Sheridan failed to prove a connection between being let go from ABC's "Desperate Housewives" and her alleged complaint against show creator and executive producer Marc Cherry.
Attorney Aaron Wais said Touchstone's then-president Mark Pedowitz was the one who made the decision to kill off Sheridan's character, Edie Britt, on May 22, 2008.
"Pedowitz's decision on May 22 could not have been motivated by a complaint not made, if at all, until four months later, in the wake of the September 24 incident between Marc Cherry and Sheridan," Wais said.
Last week, Judge Elizabeth White declared a mistrial when jurors said they were deadlocked 8-4 in favor of Sheridan, who claims her character was killed off after she complained that Cherry hit her on the head during a rehearsal.
A hearing on the motion is set for April 13, the same day a pre-trial hearing is scheduled on the matter.
Disney is the parent company of Touchstone Television Productions and ABC7.