Patrick Bolton is the David Zalaznick Professor of Business. He joined Columbia Business School in July 2005. He received his PhD from the London School of Economics in 1986 and holds a BA in economics from the University of Cambridge and a BA in political science from the Institut d'Etudes Politiques de Paris. He began his career as an assistant professor at the University of California at Berkeley and then moved to Harvard University, joining their economics department from 1987-1989. He was Chargé de Recherche at the C.N.R.S. Laboratoire d' Econométrie de L' Ecole Polytechnique from 1989-1991, Cassel Professor of Money and Banking at the London School of Economics from 1991-1994, Chargé de cours associé at the Institut d'Etudes Europénnes de l'Université Libre de Bruxelles from 1994-1998, and John H. Scully '66 Professor of Finance and Economics at Princeton University from 1998-2005. His research and areas of interest are in contract theory and contracting issues in corporate finance and industrial organization. A central focus of his work is on the allocation of control and decision rights to contracting parties when long-term contracts are incomplete. This issue is relevant in many different contracting areas including: the firm's choice of optimal debt structure, corporate governance and the firm's optimal ownership structure, vertical integration, and constitution design. His work in industrial organization focuses on antitrust economics and the potential anticompetitive effects of various contracting practices. He recently published his first book, Contract Theory, with Mathias Dewatripont and has co-edited a second book with Howard Rosenthal, Credit Markets for the Poor.