 He was a professor at the University of Lithuania/Vytautas Magnus University (1922–1940), Vilnius University (1940–1945), and the rector of the University of Lithuania for three terms (1927–1928, 1933–36 and 1936–1939).As an international lawyer, in 1932 he represented Lithuania at the Permanent Court of International Justice regarding the Klaipėda Directorate.The court found in Lithuania's favor that Otto Böttcher had violated the Statute of the Klaipėda Region.