Two camps are battling in New Jersey federal court over royalties paid by Universal Pictures for use of the car that became a time machine in the “Back to the Future” movie trilogy.

Sally DeLorean, the widow of auto executive John DeLorean, claims in a suit filed on Monday that DeLorean Motor Co. of Humble, Texas, misrepresented itself to Universal as owner of the DeLorean name. The suit says the Texas company, which has said it wants to make new replica versions of the car, collected a “substantial payment” of royalties from Universal that she said properly belong to the late automaker’s estate.