Demjanjuk’s trial over the murders of 27,000 Jews could start in Germany in autumn.
In July the court had rejected another appeal by Demjanjuk that his deportation from the United States infringed his basic rights.
Demjanjuk spent years in custody in Israel after he was extradited there in 1986, and was sentenced to death two years later after a court found him guilty of war crimes and crimes against humanity.
But in 1993 that verdict was overturned when Israel’s supreme court ruled he was not the feared death camp guard known as “Ivan the Terrible”.
His family insists he is innocent of all accusations and say that he is too ill to stand trial.