Fridericus II, rex Siciliae (1198-1250), rex Romanorum (1212-1250), imperator Imperii Romanorum (1220-1250)

Answering the pleas of Aquileian Patriarch Berthold, Emperor Frederick II proclaims and ratifies the verdict of the imperial princes gathered at the Diet of Ravenna, confirming the secular rights and prerogatives of Aquileian patriarchs and forbidding the election of rectors and the exercise of regalian rights to the subjected urban communities, especially to the Istrian cities of Koper, Poreč, and Pula.

Answering the pleas of Aquileian Patriarch Berthold V, Emperor Frederick II decrees that throughout Friuli and Istria criminal justice administration and everything else pertaining to corporal punishments and coercion (merum et mixtum imperium) resides exclusively with the patriarch of Aquileia, threatening to deprive of their fiefs anyone who would dare to administer criminal justice on patriarchal territories.

Emperor Frederick II confirms the treaty signed between Aquileian Patriarch Berthold V and the Commune of Koper.