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Partner, Sullivan & Cromwell LLP
National Leadership Council
Brendan Cullen is a partner in the Firm’s Litigation Group. Mr. Cullen has litigated a broad range of matters, including complex securities, commercial, intellectual property and antitrust litigation, frequently with a substantial technological element. He has advised and represented clients in arbitrations, in cases in state and federal trial courts and on appeals before state and federal appellate courts, including the U.S. Supreme Court. He also has conducted numerous confidential internal investigations, including investigations related to issues of corporate governance, securities matters and Foreign Corrupt Practices Act compliance.
Mr. Cullen’s corporate clients have included Caterpillar, Dolby International AB, EchoStar, EnCana, Goldman Sachs, MBNA, Microsoft, Morgan Stanley, Philips Electronics, The PMI Group, Rolls-Royce, Tenaris, Thomas Weisel Partners, UBS, VeriFone and Vista Equity Partners. Over the last several years, he has been navigating his clients through legal issues arising from some of the most complex economic developments of the past generation, including the collapse of Enron, the California energy crisis and the financial crisis. Matters with a high technology focus in which Mr. Cullen has been involved include patent litigation on behalf of VeriFone and Dolby and a six-week jury trial in which Mr. Cullen’s Sullivan & Cromwell team obtained a jury verdict for Philips in a case arising from allegations of faulty computer chips.
Mr. Cullen serves as the co-coordinator of the Firm’s Appellate Practice.