Morrison (third from left) and The Doors exemplified 60s counter-culture
The parents of late rock singer Jim Morrison have sued two of the remaining band members of The Doors, claiming they have "misappropriated" the name.
George and Clara Morrison began legal action at the Los Angeles Superior Court and are seeking undisclosed damages.
The Morrisons want to stop the surviving members of the band and their new frontman from calling themselves The Doors.
Morrison, who sang vocals for classics such as Light My Fire, died in Paris in 1971 at the age of 27.
The parents of Jim Morrison's late girlfriend, Pamela Courson, are also suing the band members.
They say they own half of Morrison's share in The Doors.
The legal case names remaining keyboardist Ray Manzarek and guitarist Robby Krieger.
It also names Ian Astbury, former lead singer of the British rock band the Cult, who was hired to replace Morrison.
John Densmore was the drummer with The Doors.
In March, former Police drummer Stewart Copeland sued Manzarek and Krieger after he was dropped from the reformed band.
In February, Densmore began legal action against them for embarking on a tour without him.
Densmore said he wanted the band billed not as a Doors gig but a concert by "the former members of the Doors".
He had been invited to join the band but he said his ears were too badly damaged to continue playing drums.
Manzarek and Krieger hit back at the suit, saying they were The Doors and that their former bandmate had given his blessing for them to tour.