The Anti-Subrogation Rule ("ASR") is a common law defense to subrogation. At Lippman Recupero, we specialize in helping insurance companies maximize their recoveries on claims where a third party is at fault.Identify, investigate, recover and prevent payments linked to accident-related medical and disability claims with Optum Subrogation Services. Subrogation prevents an accident victim from receiving double recovery for the same damage in a personal injury case. Cozen O'Connor is the world's leading subrogation and recovery law firm. We founded our subrogation and recovery practice in 1970. Why Are Subrogation Claims Allowed in New York? Office of the General Counsel. Subrogation Department. Our team of more than 100 attorneys represents the largest insurers and reinsurers in the United States, Canada, England, and other international venues.