Previously he was a law professor at the University of Milan.

He was a professor of Constitutional law at the University of Milan before being appointed to the Constitutional Court by the Italian President, Giorgio Napolitano, on 18 October 2014.

[1] Zanon had also worked at the University of Turin as a comparative constitutional law researcher and as an assistant to Valerio Onida, a judge on the Constitutional Court of Italy.

[3] Zanon was made Knight Grand Cross in the Order of Merit of the Italian Republic on 31 May 2017.

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