He practiced law in Monticello, Mississippi, with his father, leaving to serve in the European theatre of World War II, where he was in the 3rd Armored Division.
He won a Bronze Star Medal at the Battle of the Bulge, and attained the rank of captain.
[1] In 1962, Patterson ran unopposed to succeed Justice Harvey McGehee on the state supreme court.
[2][4] Patterson ran unopposed for reelection in 1970 (reporting his only campaign expense as $200 to get his name on the ballot) and again in 1978.
[2] He became chief justice in 1977, and declined to run for another term in the 1986 election,[2] retiring from office on June 30, 1986, and stating that he hoped to have more time to play golf.