In depth
Locus standi (Latin for 'place of standing') is the legal term for standing — the right to bring a case to court based on a sufficient interest in the outcome. It is a procedural requirement in judicial CBD cases.
For CBD cases, locus standi is established by showing that the petitioner is a descendant of the anchor ancestor whose citizenship they are claiming. This is typically demonstrated through the documentary evidence of the citizenship chain: birth certificates, marriage certificates, and other vital records.
Locus standi is distinct from the merits of the case — a petitioner may have standing (the right to sue) but lose on the merits (the citizenship claim fails). Conversely, a petitioner without standing may have a strong citizenship claim but cannot bring it to court (and must pursue administrative remedies instead).
Related terms
Standing is the legal right to bring a case to court, based on a sufficient interest in the outcome, required in judicial CBD cases.
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).
Judicial filing is the process of submitting a citizenship application through a court in the country of origin, rather than through a consulate or ministry.
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.