Greg has 35 years of experience in civil litigation with an increased emphasis the past 5 years in serving as a mediator.  Greg's experience in litigation includes personal injury, construction defects, product liability, insurance law and professional liability, including the defense of physicians, dentists, lawyers, accountants, architects and insurance agents in litigation, as well as representation in matters before state licensing boards.  He has litigated matters throughout the State of Iowa and in federal courts.  

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Contact Information

Patterson Law Firm, LLP
505 5th Avenue, Suite 729
Des Moines, IA 50309
Phone:  (515) 283-2147
Fax:  (515) 283-1002
Email:  [email protected]

Practice Areas

Practices in the area of mediations and arbitrations as a neutral, as well as general litigation, including, but not limited to Personal Injury; Professional Liability – medical, legal, accountants, architects and insurance agents; Construction Defects and Product Liability.


Iowa State University (B.S., Business Administration), with distinction 1984
University of Iowa College of Law (J.D., with distinction), 1987

  • Member, Moot Court Board, 1986-1987

Professional Associations and Memberships

Iowa Defense Counsel Association

  • Board of Directors, 2006-2013
  • Legislative Committee, Chair, 2007-2013

Federation of Defense & Corporate Counsel

  • Board of Directors, Vice President, 2006-2011
  • Litigation Management College
    • Associate Dean of Graduate Program, 2013-2014
    • Advisory Board, 2012-2014
    • Dean of College, 2010-2012
    • Dean of Curriculum, 2008-2010
    • Instructor, 2003-Present
  • Editor, Federation Flyer, 2006-2016
  • Foundation Committee, 2010-2012
  • Visibility Committee, Chair, 2009-2010
  • Admissions Committee, Vice Chair, 2002-2008
  • Healthcare Practice Section, Chair, 2006-2008
  • Construction Law Section, Vice Chair, 2007-2009
  • Trial Tactics Section, Member, 1997-Present
  • Product Liability Section, Member, 1997-Present
  • Professional Liability Section, Member, 1997-Present
  • Alternate Dispute Resolution Section, Member, 2005-Present

Iowa State Bar Association

  • Member, 1987-Present
  • Construction Law Section Council, 2010-Present

DRI, 1987-Present
American Bar Association, 1987-Present
Polk County Bar Association, 1987-Present
Grievance Commission of the Supreme Court of Iowa, 2016-Present
International Academy of Dispute Resolution, 2016-Present
5th Judicial District Nominating Commission, 2010-2016

Volunteer Associations and Memberships

Club President, Wakonda Club, 2015-2016
Board of Directors-Wakonda Club, 2010-2012, 2014-2017
Board of Directors-Oak Leaf Educational Foundation, 2016-Present
Board of Directors, Principal Charity Classic, 2016-Present
Iowa State Cyclone Club and Cyclone Gridiron Club
Grace United Methodist Church

Honors & Awards

Achieved AV Martindale-Hubbell Peer Review Rating

2011 Recipient of Joseph R. Olshan Award recognizing outstanding organizational skills and dedication to the Federation of Defense and Corporate Counsel (FDCC) through work on the Litigation Management College

2010-2011 Recipient of the Iowa Defense Counsel Association’s Edward F. Seitzinger Award representing an outstanding board member for exceptional contributions and meritorious service


Contributing Author, Nursing Home Litigation: Pretrial Practice and Trials, “Voir Dire, Opening Statement and Closing Argument: The Defense Perspective”

Frequent presenter of educational programs to clients and professional associations.


Greg enjoys golf, college sports and spending time with family and friends.

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