We've been over this issue of "annulled" and "acquitted" in the Marasca CSC verdict before.
Some corrections and additions:
1. An appeal to the CSC is a trial on points of law. Under Italian and international law (ECHR case-law), how evidence is interpreted is a point of law.
2. The Marasca CSC panel ANNULLED the Nencini appeal court verdict WITHOUT REFERRAL back to a lower court, because in the view of the CSC panel, there was no credible evidence that could be interpreted to support guilt. Thus, a referral would be superfluous. This annulment without referral was done in accordance with Italian law CPP Article 620, paragraph 1, subparagraph L.
3. The Marasca CSC panel ACQUITTED the accused, Amanda Knox and Raffaele Sollecito, of the charges of the murder and rape of Meredith Kercher. The reason (specification or "rubric") for the acquittal was that the accused had not committed the act of the crime. Underlying this reason was the CSC finding that there was no credible evidence that could be interpreted to support guilt. This acquittal was done in accordance with Italian law CPP Article 530, paragraph 2.*
4. The Marasca CSC panel RECONFIRMED the conviction and already-served prison sentence of the accused, Amanda Knox, of the charge of having committed "calunnia" (malicious false accusation before a judicial or police authority) against Diya (Patrick) Lumumba. The CSC did this because they annulled the Nencini appeal court verdict of aggravated calunnia, and wished to make clear that in their view the verdict of the Hellmann appeal court of "simple" calunnia remained.
5. The ECHR final judgment in Knox v. Italy found that Italy, in convicting Knox of calunnia against Lumumba, had violated Knox's rights to a fair trial under two provisions of international law, and had violated her rights to have her allegations of mistreatment investigated under one provision of international law. Thus, Italy's conviction of Knox for calunnia was unfair, and Italy is obligated under its Constitution and international law to redress these violations.
The execution of this ECHR final judgment is currently under the supervision of the Committee of Ministers (Department for the Execution of Judgments of the ECHR). Italy is obligated to provide an action plan or report on its proposed or accomplished individual and general measures to redress the violations to the Committee of Ministers.
* For completeness: Charge B which alleged that they had carried a knife to commit the crime was extinguished because the statute of limitations had expired. This extinguishment has the same practical effect as an acquittal for this charge, including maintaining the presumption of innocence.
For more detail, here is the relevant part of my post #848 in the current continuation of this thread (with a typo corrected). I have highlighted the mention of CPP Article 530 paragraph 2 and acquittal in point 2 below:
"For the murder/rape charges, Amanda and Raffaele were indeed acquitted, because the PQM uses CPP Article 530 (acquittal) and provides the specification ("rubrica"): "per non avere i ricorrenti commesso il fatto" ("because the appellants have not committed the act").
The Nencini Court of Appeal judgment of conviction was annulled without referral, but the Marasca CSC panel made clear that Amanda's conviction for "simple" calunnia, as finalized by the Chieffi CSC panel, remained in effect.
These were the legally binding actions performed by the Marasca CSC panel, as listed in the operative part of their judgment but written out by me in more detail:
1. Under CPP Article 620.1(A), they annulled without referral the conviction by the Nencini Court of Appeal of Amanda Knox and Raffaele Sollecito on Charge B (carrying the knife) because the statute of limitations had run out.
2. Under CPP Articles 620.1(L) and
530.2, they annulled without referral the following convictions of the Nencini Court and
acquitted because they had not committed the acts of the crime as follows:
2.1 For Amanda Knox only, of the alleged aggravating circumstances pertaining to her conviction for calunnia, contained in Charge F.
2.2 For Amanda Knox and Raffaele Sollecito,
2.2.1 of the alleged crimes under Charge A (in collaboration among themselves and with Rudy Guede, murdering Meredith Kercher, and including [the former Charge C] in collaboration with Rudy Guede, enabling him to rape Meredith Kercher), and
2.2.2 of the alleged crimes under Charge D (stealing two mobile phones from Meredith Kercher), and
2.2.3 of the alleged crimes under Charge E (simulating a break-in and burglary to falsely attribute the crimes against Meredith Kercher to some unknown person).
3. Reaffirms the conviction of Amanda Knox for calunnia (as finalized by the Chieffi CSC panel) with a sentence of three years imprisonment (already served)."