A longtime Connecticut attorney who was the subject of three separate grievance complaints filed by the Office of Chief Disciplinary Counsel has resigned from the state and federal bar and waived his privilege of reapplying to either in the future.

Louis S. Avitabile, a former Waterbury attorney who was admitted to the Connecticut bar in 1968, resigned Nov. 8 and six weeks later Waterbury Superior Court Judge Mark H. Taylor accepted his resignation and waiver. Avitabile had his own practice.