 From 1991 to 1996, he was an associate with McKenna & Cuneo, LLP, focusing on government contracts and litigation against the United States.From 1997-99, Teufel served as deputy Solicitor General for the state of Colorado under Colorado Attorney General Gale Norton.From 1999 until 2001, he was a special counsel with Hall & Evans, a law firm that focused on public policy and government contracts in the Rocky Mountain region.