 Decentralized authority and increased independence of the Uniate Churches were aimed at in the Canon Law / Corpis Iuris Canonici ( CIC ) reform . In its new constitutions , Eastern Patriarchs were made almost independent from Rome ( CIC Orientalis , 1957 ) Eastern marriage law ( CIC Orientalis , 1949 ) , civil law ( CIC Orientalis , 1950 ) , laws governing religious associations ( CIC Orientalis , 1952 ) property law ( CIC Orientalis , 1952 ) and other laws . These reforms and writings of Pius XII were intended to establish Eastern Orientals as equal parts of the mystical body of Christ , as explained in the encyclical Mystici corporis . 
