Another example of people trying to get money for nothing!
Guitarist Jimmy Page and singer Robert Plant are expected to give evidence at the civil case in Los Angeles.
They are accused of lifting the song's opening notes from Taurus, a 1967 track by the band Spirit.
Page, 72, and Plant, 67, are being sued by a trust acting for a founding member of Spirit who died in 1997.
BBC News - Led Zeppelin appear in court over Stairway to Heaven dispute
Never heard such a load of old cobblers, and all these years later, a "trust" acting for the dead guitarist Randy Wolfe are now trying to claim $40m compensation.
Meanwhile on planet earth...