From 1974 to 1979 he has studied International Law in Utrecht University.
From 1987 to 1992 he was preparing to defend his thesis in the Leiden University (Leiden, The Netherlands).
In 1992 he holds degree from the Leiden University, PH.D.
From 2008 to present – Professor of Air and Space Law and Director of the International Institute of Air and Space Law of Leiden University, which is one of the leading international scientific research and teaching institutes in the world, specialised in legal and policy issues regarding aviation and space activities. The Faculty of Law of Leiden University founded the institute in 1986.
He is Visiting Professor at the National University of Singapore and the University of Bordeaux, France.
In addition to his duties as Director of the International Institute of Air and Space Law of Leiden University, Pablo Mendes de Leon maintains a vast range of memberships in organisations that work to combine law and practice of aviation law and policy.
He is President of the European Air Law Association (EALA).
He is Judge at the District Court of Haarlem.
He is a Membre titulaire de l’académie de l’air et de l’espace, Toulouse, France.
He is a Member of the Dutch Safety Board.
He is a Board Member of the magazines Air and Space Law, Journal of Air Law and Commerce and the Italian ANIA Insurance Newsletter and the Director of the Series of Publications in International Aviation law and Policy with Kluwer Law International.
A member of Organizing Committee of the 7th St. Petesburg Air Law Conference, October 6, 2017.
A member of Organizing Committee of the 8th St. Petesburg Air Law Conference, October 26, 2018.
A member of Organizing Committee of the 9th St. Petesburg Air Law Conference, October 4, 2019.
He is the author of a large number of publications on topical issues regarding aviation law and policy.