Longtime prosecutor Katayoun ‘Kat’ Copeland joined West Chester firm Lamb McErlane on Nov. 16, helping the firm branch into white-collar litigation matters days before announcing her candidacy for state attorney general as a Republican on Monday. 

Copeland has held leadership roles at the state and federal level, serving as district attorney for Delaware County and  chief of the criminal division for the U.S. Attorney’s Office for the Eastern District of Pennsylvania.