Photo of Douglas E. MainsPhoto of Douglas E. Mains

Douglas E. Mains



University of Alabama School of Law, LL.M.
  • Business Transactions
  • summa cum laude
University of Mississippi School of Law, J.D.
  • cum laude
  • Criminal Law Certificate with honors
Cornell University, B.A.

Prior Employment

  • Dykema Gossett PLLC, Associate
  • Michigan House of Representatives, Deputy Legal Counsel and Senior Policy Advisor

Bar Admissions

Professional Affiliations

State Bar of Michigan

  • Marijuana Law Section, Chair, Rules and Lawmaking Committee

The Mississippi Bar

National Cannabis Bar Association

National Cannabis Industry Association

Michigan Cannabis Industry Association

News & Resources


Douglas Mains specializes in government relations and regulatory law, with a particular emphasis on providing strategic advice to clients regarding public policy, legislation, and regulatory issues. After serving as a Senior Policy Advisor and Deputy Legal Counsel to the Speaker of the Michigan House of Representatives, Mr. Mains has extensive contacts throughout the Capitol and is particularly adept at helping clients positively interact with state agencies, elected officials, and executive and legislative staff. Mr. Mains also has extensive experience as a litigation attorney, representing a wide array of clients in state and federal courts, as well as in administrative proceedings. Moreover, Mr. Mains is also at the forefront of Michigan’s evolving medical marijuana law, and is frequently asked to speak on legislative and legal developments in that industry.

  • Has helped draft, and served as counsel to, a number of successful state and local ballot initiatives, including Proposal 1 of 2018, which legalized recreational marijuana in Michigan
  • Represents and advises individuals, entities, and trade associations involved in the medical marijuana industry
  • Drafts proposed legislation, ordinances, and ballot initiatives on a wide array of issues, including education, insurance, tax policy, and medical marijuana
  • Represents clients in various administrative matters before state regulatory bodies, including the Michigan Public Service Commission and Michigan Liquor Control Commission
  • Has experience in employee benefits litigation in both ERISA and non-
    ERISA cases
  • Appears on behalf of clients before legislative bodies, including committees of the Michigan Legislature, the Detroit City Council, and the Lansing City Council


  • Represented the Michigan House of Representatives, including several Representatives and House employees, in a $160 million federal lawsuit filed by a former legislator
  • Represented the State of Michigan in an appeal to the Michigan Supreme Court regarding the constitutionality of a law mandating employee contributions to the Michigan Public School Employee Retirement System
  • Represented the Michigan Department of Environmental Quality in employment matters and criminal investigations relating to lead contamination of the City of Flint water system
  • Represented the Speaker of the House of Representatives in the criminal trial of two former state representatives
  • Served as primary legal and policy advisor to the House Committees on Commerce, Criminal Justice, Judiciary, and Military and Veterans' Affairs and House Appropriations Subcommittees on Corrections, Judiciary, Military and Veteran's Affairs, and State Police.
  • Served as election day legal counsel for a number of state and local candidates, and as counsel in several other electoral matters, including representing a presidential candidate in a statewide recount


  • Michigan Appellate Defender Commission
    • Appointed by Governor Rick Snyder, 2016 – 2019
    • Re-appointed by Governor Gretchen Whitmer, 2019 – Present
  • Lansing Regional Chamber of Commerce
    • Public Policy Committee

News & Resources

Press Releases


Seminars & Events


  • Michigan Super Lawyers, Recognized as a Rising Star, 2018
  • State Bar of Michigan Marijuana Law Section, Pioneer Award, 2018