Theodoros Stathis studied mechanical engineering at the Technical University of Vienna. he holds a Masters and PhD from Columbia University in Biophysics. He has taught at Manhattan College, at New York University, at the Universities of Patras and of Macedonia. He was secretary of the Pan-American Committee for the Self-Determination of Cyprus (1963-1967), chairman of the American Committee for Democracy and Freedom in Greece, chairman of the United Greek Front in the US working with the PAK, member of the PAK National Council, founding member and PASOK executive. He was a member of parliament for Larissa in 1981-1990 and 1993-2000. In the governments of Andreas Papandreou, he served as Deputy Minister of National Defense, Deputy Minister of Culture and Minister of Agriculture.