Mark H. Zietlow concentrates his practice in business, corporate and taxation, international transactions, employment law, trademarks and copyrights, construction law, real estate, e-commerce, nonprofit organizations, estate planning, and business litigation.

Mark has lectured on legal issues for the Michigan Small Business and Technology Development Center, Wayne State University Tech Town, Automation Alley, Michigan Association of Computer Users in Learning, Educational Leadership Technology Conference, State Bar of Michigan Business Law Section, State Bar of Michigan Intellectual Property Section, Lakeshore Human Resources Great Lakes Lenders Conference, Grand Rapids Chamber of Commerce, Michigan West Coast Chamber of Commerce, Muskegon Chamber of Commerce, The Tri-Cities Chamber of Commerce, National Business Institute, Lorman Education Services, and Sterling Education Services.

Mark was previously the Legal and Administrative Officer for Robotics International Corporation, Jackson, Michigan. Robotics International Corporation was a high-tech company engaged in design and development of robotics for security, household tasks, and entertainment. He has served on boards of directors, advisory committees, and cabinets for both profit and nonprofit organizations, including Tulip Time Festival, Ready for School, National Child Safety Council, Center for Dispute Resolution, Voluntary Action Center, Child Development Services and Ottawa County Bar Association.