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In depth
Sui generis (Latin for 'of its own kind' or 'in a class of its own') is a legal term describing something unique — a legal category or regime that doesn't fit into standard classifications.
For CBD cases, sui generis is sometimes used to describe: (1) the Israeli Law of Return (a unique citizenship regime based on religion and descent), (2) the Indian OCI card (not full citizenship but more than a visa), (3) the Portuguese Sephardic citizenship path (based on religious/ethnic heritage rather than direct descent), and (4) certain restitution paths (like German Article 116) that are 'restorative' rather than 'acquisitive.'
Understanding whether a CBD regime is sui generis helps in applying the correct legal analysis — sui generis regimes often have unique requirements and procedures.
Related terms
The Law of Return (1950) is the Israeli law that grants Israeli citizenship to Jews, their children, grandchildren, and spouses.
The OCI (Overseas Citizen of India) card is the Indian document granting lifelong residency and most economic rights to persons of Indian origin, in lieu of full dual citizenship.
Article 116 of the German Basic Law (Grundgesetz) restores German citizenship to those deprived of it by the Nazi regime between 1933 and 1945, and to their descendants.
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.
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.