Harold has substantial experience in civil litigation of all types, alternative dispute resolution (as both an advocate and a neutral mediator and arbitrator), and in regulatory and commercial matters. 

Alternative Dispute Resolution

Harold has for more than two decades been involved in service as a neutral in alternative dispute resolution (ADR). He is a senior mediator for the U.S. District Court for the District of Columbia and U.S. Court of Appeals for the D.C. Circuit Mediation Programs, a senior member of the Panel of Neutrals for JAMS (mediation and arbitration), and a member of the American Bar Association Section of Dispute Resolution. He teaches CLE courses and lectures extensively on ADR before a variety of law firms, corporate audiences, federal agencies, and law schools. 

Harold's ADR service has included mediating and arbitrating hundreds of complex disputes, a number of which have been the focus of intense media scrutiny. Typically his cases include tens or hundreds of millions of dollars in claims and counterclaims. Most of the cases involve national and multi-national companies; a significant number have involved the U.S. government and various of its Departments and agencies and in some instances top-level government officials (including litigation involving post-9/11 events and other matters linked to highest-level elected officials or political appointees).

For complete details about Harold’s service as a mediator and arbitrator, please view his information at the JAMS website.

Litigation, Transactions, Pesticides & Biotechnology

Harold's law practice has concentrated on litigation and commercial transactions. He has principally focused on issues related to the invention, registration, management, and marketing of proprietary agricultural pesticide and biotechnology products and the extensive scientific data required to be submitted to federal and state regulatory agencies to support these products. This work has included negotiations, ADR (including arbitrations), administrative proceedings, and litigation at all levels of the federal courts. Harold has prepared U.S. and worldwide joint data development and commercial supply and licensing agreements. In addition, he has worked extensively on forming and representing Task Forces comprising many national and multinational companies of all sizes which operate as joint ventures or limited liability companies to generate data and other information to meet government requirements.

Harold served in the litigation section of the U.S. Department of Justice Civil Rights Division through the Department's Honors Law Program. He joined Beveridge & Diamond during the firm’s first year and was a Principal for 30 years. He was the firm's first Managing Principal and Chairman of the Management Committee.


  • Williams College  (B.A., cum laude, 1964)
    • with highest honors
    • Phi Beta Kappa
  • New York University  (LL.B., 1967)

Bar Admissions

  • District of Columbia
  • New York

Court Admissions

  • U.S. Supreme Court
  • U.S. Court of Appeals - D.C. Circuit

Professional Affiliations

  • American Bar Association
  • District of Columbia Bar Association

Community Involvement

Harold has been involved over many years on a number of private, non-profit Boards and in sports-related activities. He serves on the Board of the Cal Ripken, Sr. Foundation.