Questione giuridica chiave
Whether the easement had lost all utility under Art. 736(1) CC or only reduced utility under Art. 736(2) CC
Decisione estratta
The easement had lost all utility because its exercise had become impossible after the owner's renovations.
Motivazione estratta
The access door remained physically present but now opened onto a void and could no longer be used. The cantonal court should therefore have relied on Art. 736(1) CC, not Art. 736(2) CC.