Question juridique clé
Whether the purchase-right contract of 16 November 1999 was a testamentary disposition requiring inheritance-law formalities.
Solution extraite
The contract was a valid inter vivos transaction; it was not subject to the formal requirements for a will or inheritance contract.
Motifs extraits
The property was already burdened during the grantors' lifetime by the registered purchase right, which restricted alienability and thus affected their assets inter vivos. The contract's form, the easement-like effects of the registry annotation, and the parties' arrangement showed no basis to treat it as a disposition mortis causa.