professional responsibility

(Wex page)

In representing a client, a lawyer should not communicate about the subject of the representation with a person the lawyer knows to be represented by another lawyer in the matter, unless the lawyer has the consent of the other lawyer or is authorized...

(Wex page)
Overview

The work product doctrine states that an adverse party generally may not discover or compel disclosure of written or oral materials prepared by or for an attorney in the course of legal representation, especially in preparation for litigation....