Lord Falconer has told ITV News it is up to parliament to legalise assisted suicide for the terminally ill.
The Labour peer is to table a private members bill on the issue.
He said: "People are going to the courts to try to resolve a problem that parliament should be resolving, and that problem is what are the circumstances in which you should be allowed to assist somebody else to die."
Locked-in syndrome sufferer Tony Nicklinson's widow and a paralysed victim have pledged to continue to challenge right-to-die law.
Locked-in syndrome sufferer Tony Nicklinson campaigned for years to win the right to end his life. Here is the timeline of his struggle.