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Patrick Hannon focuses his practice on trial and appellate litigation and other matters before federal and state courts, administrative agencies and self-regulatory organizations, as well as corporate governance, corporate investigations, complex financial transactions, and bank and securities regulatory and tax enforcement and compliance matters.

In addition to advising and representing clients in white collar and litigation matters and complex financial transactions, Mr. Hannon was involved in the successful representation of the key witness and defendant in one of the largest criminal tax prosecutions brought by the U.S. Department of Justice involving a global Big Four accounting firm. Mr. Hannon also assisted in the preparation of briefs and successful arguments of petitioners in Republic of Austria & Oesterreichische Industrieholding AG v. Whiteman before the United States Supreme Court.

Mr. Hannon spent nearly 15 years in senior management roles in the capital markets, institutional sales-trading and private banking divisions of what was then the world’s leading securities underwriter. There he advised U.S., European, Asian and Latin American governmental and supranational agencies, financial institutions, insurance companies, corporations, hedge funds, investment advisors and high-net-worth individuals in domestic and global financings and investments.

Among Mr. Hannon’s responsibilities as a banker were serving as head of global product and transaction management; overseeing new financial product development, including innovative off-balance sheet conduits and special purpose vehicles; supervising the negotiation, structuring, due diligence, execution and distribution in the global marketplace of between $500 billion to $750 billion annually of continuously offered, underwritten and privately placed investment grade, high yield, mortgage- and asset-backed, auction rate and hybrid capital securities, and equity, index, commodity and currency-linked derivative instruments; formulating firmwide underwriting, capital commitment, risk management and compliance standards and policies; and ensuring transaction compliance with SEC, FINRA and other securities and financial markets regulatory regimes worldwide. He also served as the investment bank’s money market relationship manager, responsible for origination of publicly offered and privately placed money market, deposit, medium term, floating rate and asset-backed and structured financings issued by U.S. and foreign money center and regional banks, agencies and branches and other financial institutions.

Mr. Hannon has advised leading U.S. financial institutions in developing such new financial products as the first private label mortgage-backed and pass-through bonds and obligations; publicly registered (pre-REMIC) off-balance sheet and residual interest CMOs; planned amortization class, interest-only and principal-only CMOs; and emerging market asset-backed securities.

Mr. Hannon is a member of the Association of the Bar of the City of New York and the American Bar Association.