Model Rule of Professional Conduct 4.3
Definition
The ethical rule that governs a lawyer’s dealings with someone who is not represented by counsel. The rule prohibits a lawyer from stating or implying that he is disinterested when he is dealing on behalf of a client with an unrepresented person, and from giving legal advice to an unrepresented person other than the advice to secure counsel if the lawyer knows or reasonably should know that the person’s interests are or reasonably could be in conflict with the client’s interests.