Arlen Gregorio

Arlen Gregorio became a full-time commercial mediator in 1985. Three years later, he founded the first firm of attorneys devoted solely to mediating business and civil trial matters nation-wide. Now known as Gregorio, Haldeman & Rotman, its offices are in San Francisco.

Mr. Gregorio has successfully mediated major disputes in a majority of states in the U.S. He welcomes matters concerning almost every aspect of civil law other than domestic relations; his most frequent work has been with cases involving contract, construction, death and injury, employment, insurance, intellectual property, probate, product and professional liability, real estate, and securities law. He is recognized particularly for his skill in mediating disputes in which personal or business relationships play key roles.

In his prior law and public service careers Mr. Gregorio often acted as a mediator, as well as in other neutral roles. He has also served as a Superior Court Judge pro tem, Special Master, Referee, Conciliator, and Mini-Trial Judge.

A Stanford Law graduate, Mr. Gregorio conducted a general civil trial practice for twelve years as a partner in a law firm on the San Francisco Peninsula, where he served as a local bar president and was active in state bar affairs. He also served as the Assistant City Attorney for San Bruno, California, for eight years, dealing primarily with the city’s construction, planning, and land-use issues.

Mr. Gregorio served eight years as a California State Senator, receiving national recognition for his pioneering legislation in a number of fields. He has also served as a member of the San Mateo County Board of Supervisors and of the governing boards of several local, regional, and state agencies.

Mr. Gregorio was awarded the China Service Medal for action as a U.S. Naval Air Officer. He also acted as counsel in several General and Special Courts-Martial.

A Fellow of the American College of Civil Trial Mediators and a principal member of the Association for Conflict Resolution, Mr. Gregorio has lectured widely on mediation and dispute resolution. In 1986, he founded the Peninsula Conflict Resolution Center, which provides a wide variety of mediation services in San Mateo County. He has also taught courses in construction law at College of San Mateo, business and government at College of Notre Dame, and urban studies at Stanford University where he received his undergraduate and law degrees.