He was professor at the Universities of Dijon and Paris and served from 1922 until his death as judge of the Permanent Court of International Justice.

André Weiss was born in Mulhouse in 1858 and completed a degree in law at the University of Paris in 1880.

He was a close associate of Secretary of State Aristide Briand and participated as a delegate to the Paris Peace Conference at the end of World War I.

In September 1921, he was elected by the Assembly and the Council of the League of Nations to the post of judge on the newly formed Permanent International Court.

His compatriot, Henri Fromageot, was elected his successor, and in the office of vice-president he was succeeded by the Swiss Max Huber.