Patrick O'Brien's practice focuses on providing U.S. federal income tax advice to U.S. and non-U.S. clients in connection with a variety of corporate and partnership transactions. His experience includes taxable and tax-free acquisitions and dispositions, complex capital restructurings, partnership formations and capitalizations, joint ventures, debt instruments and derivatives, foreign currencies, energy tax credits, real estate transactions, and foreign investments in the United States.

Patrick is a member of the New York State Bar Association.