About
Oberdier Ressmeyer LLP is a New York, NY litigation boutique founded in 2011. The firm handles complex commercial litigation, international arbitration—including UNCITRAL and ICC matters—and regulatory proceedings for clients ranging from individuals to Fortune 50 companies in U.S. courts and cross-border forums. Its attorneys report favorable outcomes in over 90% of matters, including victories in nine cases with claims over $200 million and three exceeding $1 billion, and have managed more than $3 billion in aggregate claims in recent years. Chambers USA 2026 ranks the firm in Litigation: General Commercial: Highly Regarded — New York.
Representative work includes breach of contract disputes, securities class actions, counterfeiting and trade secret litigation, creditors’ rights and bankruptcy, civil rights and employment discrimination claims, international insolvency, defense-sector transactions, aircraft engine supply disputes, and New York real estate matters. Clients include domestic developers and funds as well as foreign state-owned and private enterprises. The firm’s partners include Carl W. Oberdier, Kellen G. Ressmeyer, and Fabrizio Grasso.