Collin Ryan represents companies and individuals in complex civil and commercial litigation in state and federal courts throughout the country, both at the trial and appellate level. Collin has represented both plaintiffs and defendants in a variety of matters, including business and contract disputes, antitrust litigation, class action and multi-district litigation, intellectual property litigation, product liability and mass tort litigation, shareholder and corporate governance disputes, and securities litigation. He also has extensive experience in False Claims Act litigation across a variety of industries, including pharmaceutical, healthcare, and military defense. 

Collin earned his law degree from the University of Cincinnati College of Law where he graduated summa cum laude and was elected into the Order of the Coif. He was an editor for the Cincinnati Law Review and also served as a Legal Public Interest Volunteer. While in law school, Collin also served as a judicial extern in the chambers of the Honorable Patrick F. Fischer, then of the Ohio First District Court of Appeals.

Representative Work

Represented the State of Ohio in prosecution of claims against opioid distributors for causing the opioid epidemic in Ohio.

Represented Major League Soccer team in breach of contract claims over naming rights sponsorship deal for new soccer stadium.

Represented egg producer in defense of antitrust class action claims alleging industry-wide supply reduction and price-fixing conspiracy.

Represented closely-held corporation and majority shareholders in defense of breach of fiduciary duty claims brought by minority shareholders.

Represented former corporate officers in prosecution of claims against corporation and private equity firm for breaching/interfering with share redemption agreements.    

Represented telecommunications company in defense of fraud claims arising out of computer equipment financing transactions. 

Represented several broker-dealers in securities trading investigation.

Professional and Community Involvement

Federal Bar Association

Cincinnati Bar Association

Ohio State Bar Association

Kentucky Bar Association

Northern Kentucky Bar Association

Indiana State Bar Association

Leadership Council for Nonprofits, BOLD Class 6

The First Tee of Greater Cincinnati & Northern Kentucky, Community Council

Potter Stewart Inn of Court, Barrister (2018 - present)

Oyler School, A.P. Hampton Mentoring Program

Miami University Young Alumni Council, Member (2017 - 2020)

Awards & Recognition

George C. Katsanis Memorial Scholarship Recipient

News & Resources


Blog Posts


  • Ohio
  • Kentucky
  • Indiana
  • U.S. District Court, Southern District of Ohio
  • U.S. District Court, Western District of Kentucky
  • U.S. District Court, Southern District of Indiana
  • U.S. District Court, District of Colorado
  • U.S. District Court, Northern District of Illinois
  • U.S. Court of Appeals, Fourth Circuit


J.D., University of Cincinnati College of Law, summa cum laude, Order of the Coif, 2016

miniMBA, Miami University, 2021

B.A., Miami University, 2012


  • Luxembourgish
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