The case has not ‘formally ended’:
On 27 August 2012 an application was filed with the Norwegian Supreme Court for Review of the Oslo District Court: Breivik Judgement, to set aside (A) the Necessity ruling, and (B) the conviction and Remit to Oslo District Court for hearing of further evidence to conclude Objective and Subjective Necessity Test.
See: http://ecofeminist-v-breivik.weebly.com/27-aug-12-review-applic.html