The Catholic Archdiocese of Philadelphia said in a motion filed Tuesday that it will not waive its own attorney-client privilege regarding 12 documents that Monsignor William J. Lynn wants to subpoena in the criminal case against him.

Lynn, the archdiocese’s former secretary for clergy, is facing criminal charges, including endangering the welfare of children, on allegations that he failed to take sufficient action to protect children from sexually abusive priests. Lynn served as the archdiocese’s secretary of clergy from 1992 until 2004.