In depth
In re (Latin for 'in the matter of' or 'concerning') is a legal phrase used in case names for proceedings that are not adversarial — i.e., there is no opposing party. It is common in CBD judicial cases, particularly Italian 1948 cases.
For example, an Italian 1948 case might be titled 'In re Rosselli' — meaning 'in the matter of Rosselli's citizenship claim.' The case name identifies the petitioner but does not name a respondent (as there is no opposing party).
In re is also used in other non-adversarial proceedings: name changes, adoptions, guardianships, and naturalizations (in some jurisdictions).
Related terms
A 1948 case is a judicial petition for Italian citizenship filed in the civil court of Rome, available to descendants of Italian women who gave birth before January 1, 1948.
A petition is a formal written request to a court seeking a specific order or judgment, the document that initiates a judicial CBD case (e.g., an Italian 1948 case).
Lex loci (Latin for 'law of the place') is the legal principle that the law of the place where an event occurred governs the legal consequences of that event.
Lex domicilii (Latin for 'law of the domicile') is the legal principle that the law of a person's domicile governs certain legal relationships, complementing lex loci in CBD cases.
Sui generis (Latin for 'of its own kind') is a legal term describing something unique, often applied to citizenship regimes that don't fit standard categories.
Ex post facto (Latin for 'from after the fact') describes a law that retroactively changes the legal consequences of actions, relevant to CBD restitution laws.