When do a lawyer confidentiality duty end?

A lawyer's duty of confidentiality typically ends when the information is no longer confidential, such as when the client consents to its disclosure or when the information becomes public. Additionally, the duty may terminate if the lawyer is required by law to disclose certain information, such as to prevent a crime or to comply with a court order. However, it's important to note that the duty of confidentiality often extends beyond the end of the attorney-client relationship, as it is meant to protect the client's interests.