Warren Nachlis practices intellectual property law with an emphasis on licensing and technology transactions. His practice includes a wide range of intellectual property-related matters, including licensing, joint ventures, joint development agreements, sponsored research agreements with academic and nonprofit organizations, development and supply agreements, technology issues, and strategic intellectual property counseling. Warren also routinely advises clients on intellectual property issues that arise in connection with larger corporate transactions such as mergers and acquisitions, capital markets offerings, secured lending transactions, asset securitizations, and private equity investments. He is co-leader of the Licensing & Technology Transactions services of the Firm's IP Practice.

Warren has experience in a broad spectrum of technology areas with particular emphasis in the pharmaceutical, biotechnology, medical device, electronics, media, entertainment, and financial information industries. His representative clients include Astellas, Astra Zeneca, Celgene, City of Hope, Essilor, H. J. Heinz, Jefferies & Company, sanofi-aventis, SAP, Symphony Capital, and Verint Systems. In addition, Warren's experience includes patent litigation and interference matters, and he has a strong technical background in polymers, pharmaceuticals, chemistry, and biology.

Warren is a member of the Licensing Committee of the Intellectual Property Owners Association.