Unless an exception applies, the client may refuse to disclose the information in a court proceeding and may prevent the lawyer from doing so. The attorney-client privilege is the oldest privilege for confidential information recognized at common law.Attorneyclient privilege is the legal right to keep your communications with your attorney confidential. Corporate-Attorney Client Privilege. Rule 503 continues the longstanding tradition of protecting attorneyclient privilege in order to facilitate honest and complete communication. In Texas, the attorneyclient privilege is a legal safeguard that protects confidential communications between attorneys and their clients. Godfrey, Recent Developments: The Revised AttorneyClient Privilege for Corporations in Texas, 30. TEX. Attorney-client privilege may not apply if you disclose personal details but are not asking for help with a legal matter. The company's management has the power to waive the attorney-client privilege. Similarly, in 1999, the Texas Supreme Court reviewed the Texas.