Article 64 - Agent acting without or exceeding his authority

(1) Where an Agent acts without authority or exceeds his authority, his acts do not affect the legal relations between the Principal and the third party.
(2) However, where the Principal causes the third party reasonably to believe that the Agent has authority to act on behalf of the Principal and that the Agent is acting within the scope of that authority, the Principal may not invoke against the third party the lack of authority of the Agent.