Michael Jackson's doctor Conrad Murray has spoken out from prison to insist he is a victim of injustice and is determined to win his medical licence back. The medic was found guilty of involuntary manslaughter and sentenced to four years in prison for causing the superstar's death in 2009, but he is currently appealing against his conviction. Murray becomes eligible for release in October (13), but he insists he is fighting to clear his name rather than pushing for his freedom. In a phone call to America's Today show from the jail where he is being held, Murray says, "I hope the court will see that an injustice has occurred on this occasion. If that is the case, I will have my (medical) licence back and I will continue to practice medicine..." When host Savannah Guthrie asks whether he takes any personal responsibility for what happened to Michael Jackson, Murray replies defiantly, "Not any responsibility that relates to his death. I am sorry that I have lost Michael as a friend and as a patient... It's a tremendous loss... It's going to remain with me for the rest of my life, but I am not going to accept responsibility for anything I did not do. .. (He) caused his own demise." The incarcerated doctor goes on to suggest his time in prison has been a "horrendous experience". Jackson died after suffering an overdose of anaesthetic Propofol at his home in California just weeks before he was due to kick off a huge comeback concert series. Murray's bid to clear his name comes as Jackson's mother, Katherine, prepares for the start of her legal battle with AEG Live bosses, the promoters behind the This Is It shows, over her son's death. She wants them to be held responsible for hiring Murray to look after the singer.