He has appeared as lead counsel in patent litigation across the country, including before the ITC, dealing with technologies ranging from software to semiconductor fab equipment, materials chemistry, voice over IP, fiber optic networking, bio assays, diagnostic tools, medical devices, pharmaceuticals, and recombinant DNA. In addition, Mr. Woo has represented a range of clients in copyright, trademark and trade dress infringement cases, trade secret and licensing disputes, unfair competition, trade libel, false advertising, and other complex litigation.