About Us The largest law firm in New York's Capital Region, Whiteman Osterman & Hanna LLP has a reputation for innovative solutions and professional leadership. Through integrated, firm-wide collaboration, it offers clients a broad range of expertise. The Firm provides clients a broad range of high quality legal services concentrating in legal and regulatory issues relating to business, corporate, education, cleantech, energy, utility regulation, environmental, land use, health care, immigration, intellectual property, labor, employment, real estate development, tax and telecommunications law as well as estate planning and administration, government relations and litigation.