Sui generis
A similar case that led to the use of the label "sui generis" is the relationship of New Caledonia relative to France, because the legal status of New Caledonia can aptly be said to lie somewhere between a French overseas collectivity and a sovereign nation. Although other examples of such status for other dependent or disputed territories may exist, this arrangement is unique within the French realm.
Sui iuris
A patriarchal church is a full-grown form of an Eastern Catholic church. It is 'a community of the Christian faithful joined together by' a Patriarchal hierarchy. The Patriarch together with the synod of bishops has the legislative, judicial and administrative powers within jurisdictional territory of the patriarchal church, without prejudice to those powers reserved, in the common law to the Roman pontiff (CCEO 55-150). Among the catholic oriental churches the following churches are of patriarchal status:Major archiepiscopal churches are the oriental churches, governed by the major archbishops being assisted by the respective synod of bishops. These churches also have almost the same rights and obligations of Patriarchal Churches. A major archbishop is the metropolitan of a see determined or recognized by the Supreme authority of the Church, who presides over an entire Eastern Church sui iuris that is not distinguished with the patriarchal title. What is stated in common law concerning patriarchal Churches or patriarchs is understood to be applicable to major archiepiscopal churches or major archbishops, unless the common law expressly provides otherwise or it is evident from the nature of the matter" (CCEO.151, 152). Following are the Major Archiepiscopal Churches:
The sui iuris church, which is governed by a metropolitan, is called a metropolitan church sui iuris. " A Metropolitan Church sui iuris is presided over by the Metropolitan of a determined see who has been appointed by the Roman Pontiff and is assisted by a council of hierarchs according to the norm of law" (CCEO. 155§1). The Catholic metropolitan churches are the following:Other than the above-mentioned three forms of sui iuris churches there are some other sui iuris ecclesiastical communities. It is "a Church sui iuris which is neither patriarchal nor major archiepiscopal nor Metropolitan, and is entrusted to a hierarch who presides over it in accordance with the norm of common law and the particular law established by the Roman Pontiff" (CCEO. 174). The following churches are of this juridical status: