Data
Mayer Brown & Platt has 931 lawyers and 14 offices, including Chicago, London, New York and Cologne. Managing partner: Debora de Hoyos. Major departments: property, tax, corporate & securities, finance, IP and litigation.

Key competitors
Jones Day Reavis & Pogue, Kirkland & Ellis, Sidley & Austin and Skadden Arps Slate Meagher & Flom.