 Following the resignation of Rufus Thayer as a Judge of the United States Court for China in 1913, Lobingier accepted an appointment to act as judge of that court from 1914.In 1917, Lobingier gave evidence before the House Committee on Foreign Affairs on the operation of the United States Court for China and in 1920 he compiled and edited case reports of the United States Court for China as well as other decisions relating to extraterritoriality from other courts including the British Supreme Court for China and Japan.He completed his 10-year term in 1924 and was succeeded by Milton D. Purdy.