A Colorado baker who refused to make a wedding cake for a gay couple has asked the Colorado Supreme Court to reverse judges' rulings against him.

Attorneys for Jack Phillips, owner of Masterpiece Cakeshop, argue that selling wedding cakes to gay and lesbian couples would violate his conscience.

In 2012, Phillips refused to consider baking a cake for Dave Mullins and Charlie Craig. The men, who married in Massachusetts, wanted to buy a cake from Phillips' bakery for their Denver reception. (Colorado at the time recognized gay coupes with civil unions, not marriage.)

The couple sued, saying that Phillips' faith does not give him a right to discriminate. Earlier this year, the Colorado Court of Appeals upheld lower court rulings against Phillips.

Attorneys representing Phillips says they're prepared to take their case all the way to the U.S. Supreme Court.