Questão jurídica principal
Whether the surety undertaking in the loan agreement was valid despite the alleged lack of public notarization for a second-rank suretyship.
Decisão extraída
The alleged form defect of the subordinate suretyship did not invalidate the appellant's own surety obligation or prevent provisional release.
Fundamentação extraída
A form defect in a downstream recourse relation cannot affect the earlier will to assume the primary surety obligation; the appellant's suretyship as a legal person was itself form-valid.