Dear Christian-Emil and Robert,
Perhaps the Institutional Theory of Law has ideas to come up with an answer to your question and to the question that started this thread. Influenced by the Philosophy of Language, by J. Searle and J. Austin, the legal neo-institutionalism brought new light to the concept of "legal institution". According to Neil MacComick, "a 'institution of law' is a legal concept which are regulated by sets of institutive, consequential and terminative rules" ("Enn Normative Description" isA "E29 Design of Procedure") "with the effect that instances of them are properly said to exist over a period of time, from the occurrence of an institutive act or event until the occurrence of a terminative act or event" (so, "Enn Legal Institution" is a "E4 Period"). The term "right" has a semantic overload. It is necessary to differentiate "right-claim/duty" as an atomic relation between two people (in the hohfeldian sense) as well as "right" as an instance of a legal institution (ex: property right). Property right consists of a bunch of atomic rights (claims, power, immunity, privileges). Kind Regards, João Alberto de Oliveira Lima