Questão jurídica principal
Whether the company was bound by a convention signed alone by a director who had only collective signing power.
Decisão extraída
Yes. The company ratified the convention by later conduct in the litigation, so it could not rely on the lack of collective signature.
Fundamentação extraída
A single signature by a collectively authorized director does not bind the company, but unauthorized acts may be ratified, including tacitly. By pursuing the action and maintaining in its pleadings the position that it had engaged itself under the convention, the company approved the act retroactively.