Attorneyclient privilege is a legal doctrine that protects confidential communications between a client and their attorney. In this blog, criminal defense lawyer Craig Orent breaks down attorneyclient privilege, what it means, and how it can affect your case.Attorney-client privilege refers to a legal privilege that works to keep confidential communications between an attorney and his or her client secret. Under Pennsylvania law, the attorney-client privilege attaches when there has been a professional consultation. A magistrate judge in the Southern District of New York held that communications between a corporate client and its inhouse attorney were not privileged. If legal advice is not the purpose of the communication, the attorneyclient privilege does not apply. New Phoenix Sunrise Corp. v. C.I.R.,. However, the state of Arizona will require you to obtain a transaction privilege tax license to conduct business in the state. A law firm in tune with the business engine, we have helped the West's entrepreneurs as well as its largest businesses for more than 130 years. Corporate Attorney-Client Privilege and.