That court re-sentenced her to more than 28 years in prison for complicity in sexual assault and murder, and three years for malicious accusation.
Ms Knox launched another appeal, and in 2015 she and Mr Sollecito were acquitted of sexual assault and murder by Italy’s highest court, but Ms Knox was not cleared of the malicious accusation charge.
Rudy Hermann Guede, an Ivorian, is serving a 16-year sentence for Ms Kercher’s murder.
In a statement, Ms Knox said: “In early November 2007, I was studying abroad in Perugia, Italy, when a local burglar named Rudy Guede broke into my home and raped and killed my friend and roommate, Meredith Kercher. I was in shock, and I volunteered to help the Perugian police in any way I could. But they weren’t interested in my help. They were determined to break me.
“I was interrogated for 53 hours over five days, without a lawyer, in a language I understood maybe as well as a ten-year-old. When I told the police I had no idea who had killed Meredith, I was slapped in the back of the head and told to ‘Remember!’”
“Today, the European Court of Human Rights ruled that my slander conviction was unjust. I am grateful for their wisdom in acknowledging the reality of false confessions, and the need to reform police interrogation methods.”