Thommessen was awarded its title during a black-tie ceremony at the University Club in New York. Leading lawyers and firms from 35 practice areas and over 50 countries were recognised during the ceremony.

Thommessen’s partners were listed 29 times across 15 practice areas in this year’s publication. Overall, Thommessen was listed more times than any other Norwegian firm.

Who's Who Legal has published rankings since 1996. The British publisher Law Business Research is responsible for the award. Each year Who’s Who Legal considers firms in approximately 100 countries worldwide.