He was born in Warsaw on the 29th of July 1891. From 1909 he studied law at the University of Lviv and the University of Tartu. From the very beginning of his studies, his political activity was connected with the National-Democratic Party. In 1917 he became a member of the League of Polish Statehood and secretary of the Union for the Reconstruction of the Polish State (ZOPP). In 1918, after Poland regained independence, Komornicki accepted the post of a legal counsel at the Ministry of Internal Affairs. He gave an opinion on, among others, the draft of the Small Constitution of the 20th of February, 1919, and the Act on the Private International Law. In 1919, by order of the Commander-in-Chief Józef Piłsudski, Komarnicki was delegated to the newly revived Stephen Bathory Vilnius University as the lecturer on international and political law. In 1920 he volunteered to the Polish Armed Forces and fought through the whole Polish-Soviet campaign. Then he took part in the armistice negotiations with the Russians in Baranowicze in 1921. After the cessation of hostilities and the conclusion of the peace treaty in Riga on the 18th of March 1921, which settled the issue of the eastern border of the Second Polish Republic, Komarnicki was appointed assistant professor on political law and knowledge of the statehood, receiving the title of full professor only two years later. In 1924-1927 he was the dean of the Department of Law of the Vilnius University, and in 1925 he founded the ‘Rocznik Prawniczy Wileński’. Following the August Novelization (of the 2nd of August, 1926), which modified the March Constitution after the May Coup, Komarnicki was among the leading opponents of the new legal order. In 1928-1935 he held a seat in Sejm on behalf of the National Party. In the 1930’s he belonged to numerous Polish scientific societies, such as the Polish Academy of Arts and Sciences, Society of Friends of Science in Wilno, Polish Institute for Public Administration, and the Central Committee of Polish Institutions for Political Sciences. Following the outbreak of the Second World War in 1939, and the occupation of Vilnius by the Soviet troops, Komarnicki was interned in Gryazovets, near Vologda. After the conclusion of the Sikorski-Majski Agreement between the Polish and Soviet governments on the 30th of July 1941, he was released and left to Great Britain. In 1942 he was the Minister of Justice in the cabinet of Władysław Sikorski, and then of Stanisław Mikołajczyk. In 1945-1954 he lectured on constitutional law (State law) and public international law at the Polish Department of Law of the Oxford University and at the Polish School of Political Science in London. He died childless in London on the 19th of March 1954. His works include Powstanie państw ze stanowiska nauki o państwie i prawa międzynarodowego (1916), Ustrój państwowy Austro-Węgier... (1918), Polskie prawo polityczne. Geneza i system (1922), O zmianie konstytucji polskiej (1927), Prawo polityczne wraz z nauką o państwie (1928, 1932), La définition de l`agresseur (1935), Ustrój państwowy Polski współczesnej. Geneza i system (1937), and Prawo konstytucyjne (1950).
