Questão jurídica principal
Whether a testamentary disposition in favor of an heir unworthy under Art. 540 Abs. 1 Ziff. 3 ZGB is valid or void.
Decisão extraída
A testamentary appointment of an unworthy heir is void; the will does not survive as effective in favor of that person.
Fundamentação extraída
Erbunwürdigkeit affects not only hereditary capacity but also the disposition itself where the testamentary gift contradicts the testator's will. For an appointed heir who is unworthy, the disposition is treated as if it had never existed, with the same practical effect as invalidity.