After graduating from law school, Coffin served as a law clerk for Judge
Albert Wheeler Coffrin in the District of Vermont. From 1991 to 1994, he was a counsel to Senator
Patrick Leahy on the Committee on the Judiciary, Subcommittee on Technology and the Law. Prior to that, he spent two years as a litigation associate at Hale and Dorr in Boston. From 1994 to 2006, he was an
assistant United States attorney in the District of Vermont, serving in the Civil Division for four years and the Criminal Division for eight years. From 2006 to 2009 he was of counsel at Paul Frank & Collins, a law firm in
Burlington, Vermont. He was recommended to the post by Senator
Patrick Leahy. His nomination was received by the
United States Senate Committee on the Judiciary on June 4, 2010. His nomination was reported out of committee on June 18, 2009. He was confirmed by the
United States Senate by
voice vote on August 7, 2009. On December 19, 2014, he announced his resignation, effective January 12, 2015.
Post-government career In January 2015 Coffin joined the Burlington office of Vermont law firm Downs, Rachlin, Martin, LLC. ==References==