A. ROBERT ROSIN - Leonidou & Rosin
A. Robert Rosin

Managing Shareholder

Stanford University, B.A.
University of California at Berkeley, Boalt Hall School of Law, J.D.


State Bar of California
U.S District Courts for the Southern, Central, Northern and Eastern Districts of California
United States Court of Appeals for the Ninth Circuit
United States Court of Federal Claims
United States Armed Services Board of Contract Appeals


United Contractors – Legal Advisor Government Relations Committee Member
American Bar Association – Construction Law and Tort and Insurance Law Sections
Associated General Contractors of California – Legal Advisory Committee
Associated Builders and Contractors


With more than 30 years of experience, in state, federal, and administrative proceedings and trials, as well as arbitration and mediation, Mr. Rosin has successfully prosecuted his client’s claims and defended their interest in disputes arising from the construction of bridges, highways, energy production and waste treatment facilities, jails and prisons, manufacturing plants, dams, pipelines, site utilities, and aqueducts, heavy rail transit vehicles, office developments, high-rise structures, schools, hospitals, residential projects. Drawing on that experience, he is able to develop strategies to resolve disputes cost effectively and expeditiously, and he is able to draft and negotiate agreements that take into account the actual realities of construction in the field. Mr. Rosin has successfully argued appeals to the California District Courts of Appeal, including the first California decision with regard to best value procurement, Schram Construction, Inc. v. Regents of University of California, 187 Cal. App. 4th 1040 (2010). He was the lead (and sole) counsel in a complex, month long trial that resulted in a $2.1 million judgment in favor of his client, the general contractor on a school construction project; the judgment included $695,981 in prompt payment penalties and $839,212 in attorney’s fees. The author of articles on mechanic’s lien, bonds and suretyship, environmental regulation, the Uniform Commercial Code, and prompt payment statutes, he is a frequent speaker at seminars and continuing education programs for attorneys, contractors, material suppliers and construction managers. Mr. Rosin is a past member of the California Bar Association’s respected Committee on the Administration of Justice, and he has testified before the State Legislature in connection with legislation affecting the construction industry.

Industry Recognition

United Contractors – Special Industry Service Award
Martindale Hubbell – AV Preeminent Rating
Construction Lawyers Society of America – Charter Fellow