Marvin has been engaged in the general practice of law since his graduation from Georgetown University Law Center in 1976. His representation of dairy farmers, dairy farmer cooperatives, and other firms in the dairy industry has taken him across the United States into more than 20 federal district courts and into six federal circuit courts of appeals. In 2015, Marvin led the legal initiative on behalf of California dairy cooperatives and their member dairy farmers which, after a 40 day hearing, successfully brought federal milk marketing regulation to California, preempting the state system which had disadvantaged the California dairy farmers. Marvin is recognized nationally as an authority on federal milk marketing regulations under the Agricultural Marketing Agreement Act. He has represented national, regional, and local dairy farmer cooperatives with members in the 48 contiguous states. His counseling in many instances has focused on the cooperatives’ qualification under the Capper-Volstead Act which provides an important limited exemption for farmers under the federal antitrust laws. Among his current clients, Marvin presently serves as counsel to the Pennsylvania Association of Dairy Cooperatives and several regional cooperative marketing agencies in common.
Marvin’s practice also involves: counseling and representing clients in estate planning and administration; real estate transactions, zoning and land use, nonprofit organizations, and other civil matters. He was the Solicitor for the Fairview Township Zoning Hearing Board for 36 years.
Marvin is licensed to practice in:
- All Pennsylvania Courts;
- U.S. District Courts – Middle, Eastern, and Western Districts of Pennsylvania
- U.S. Court of Appeals for the 3rd, 6th, 7th, 8th, 10th, and District of Columbia Circuits
- U.S. Supreme Court;
- New York State
Marvin is a member of the Cumberland County and Pennsylvania Bar Associations and the American Agricultural Law Association (AALA). He was awarded recognition in 2021 by the AALA for Excellence in Agricultural Law, Private Practice.
Marvin has been active in numerous community organizations including: The York County 4-H Endowment, where he is currently Chairman of the Board of Trustees; Current Board member: Fairview Township Emergency Medical Services, Inc.; Past Board member and officer: Red Land Senior Citizens Center, Inc.; Board member, officer, and coach, Redland Soccer Club, Inc.; and elected member West Shore School District, Board of School Directors, 1985-93, President or Vice-President, 1989-93. He is a parishioner of St. Theresa Church, New Cumberland.