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Civil Litigation and Appeals Construction Law Insurance Defense Mass Tort and Complex Litigation


J. Mark Trimble

Email J. Mark: | Phone: 419-248-2600

Mr. Trimble has been a partner then shareholder at our firm since 1996. Mark’s practice focuses on litigation which includes insurance defense, products liability, business matters and construction disputes. He has a very active trial practice in which he has tried over 175 jury trials. At one point, he won 72 consecutive jury trials. He has won over 95% of his jury trials. Mark has fostered an aggressive approach to trial preparation by developing a mutually agreed to strategy with each client for each case. This success has been achieved while attempting to minimize the cost to the client.

Born: Urbana, Ohio

Bar Admission:

  • 1990 Supreme Court of Ohio
  • 1990 U.S. District Court for the Northern District of Ohio
  • 2005 U.S. District Court for the Southern District of Ohio
  • 2009 U.S. District Court for the Eastern District of Michigan
  • 2012 U.S. Supreme Court
  • 2012 U.S. Sixth Circuit Court of Appeals 


  • Bowling Green State University (B.S.B.A., 1983)
  • University of Toledo College of Law (J.D., 1990)

Member: Toledo Bar Association (1990+), TBA Grievance Committee (1992 – 1994); Ohio State Bar Association; American Bar Association (1990+), Litigation Section; Ohio Association of Civil Trial Attorneys (1990+); Toledo Claims Association (1993+); Defense Research Institute (1996+); Council on Litigation Management (2010+).  Board Member of the Greater Aquatic Club 2006-2007 & 2014 to Present; Board Member Toledo Area Small Business Association (TASBA) 2015 to Present

Speaker: Ohio State Bar Association Annual Convention 2000, an analysis of the Scott Pontzer decision; National Business Institute Law Review Series, “Trying the Wrongful Death Case in Ohio,” 1999; National Business Institute Seminar, “Adjusting the Automobile Injury Claim in Ohio,” 2001 and 2002; Ohio Association of Trial Lawyers, “The Defendant’s Perspective”; 2004; Toledo Bar Association, “Trial Tips for the Practitioner,” 2005; Ohio Judicial Conference, “The Defense Perspective on Tort Reform,” 2005; Toledo Bar Association Common Pleas Court Committee’s Seminar “Trial Techniques II,” 2005; Tactics and Strategies for Preparation and Trial of the Ohio Soft Tissue Injury Case, 2005; PANO; “The Effect of Robinson v. Bates,” 2007; University of Toledo Paralegal Studies; “Evaluating Personal Injury Claims,” 2008; Ohio Joint Insurance Fraud Seminar; “Fair Claims Reporting Act,” 2010, "Whether to Use or Not to Use an IME," NSPII Conference, 2011; "Mastering Communications - Bridging the Generation Gap When Adjuster and Lawyer Effectively Communicate With Each Other,"Annual Conference of the Claims and Litigation Management Alliance, San Antonio, Texas 2013 and Claims and Litigation Management Alliance Central Ohio Chapter Education Event, 2013 and 2017; 2014 Counsel on Litigation Management, National Convention; "Effective Communication with Millennials; Social Media in Civil Litigation: A Practical Perspective, 2016; 

Publications: Co-Author: Monograph, “Ohio Living Will and Durable Power-of-Attorney for Health Care, A Practical Analysis for Hospitals and Providers;" "Sexting and It's Ramifications" St. Francis High School, 2016; Co-Author: "The Difference Between a Self Insured Retention Program and a High Deductible Policy."

Concentrations: Civil Litigation; Insurance Defense Law; Products Liability, including Drug and Medical Device Defense; Corporate Litigation; Employment Litigation; Construction Law; Commercial Litigation; Banking and Foreclosure Law.


A New Discrimination
Should I Date My Boss?
Robinson v. Bates Upheld Again
Why Play Games with Discovery
Mark Trimble Wins Defense Verdict in Admitted Liability Trial
Can My Kid Drive at Night?
Social Media Policies
A Parking Lot Victim's Rights
Use of Credit Reports in Hiring
Parents Beware of Liability for Providing Alcohol to Underage Guests
Alcohol as a Liability Issue


Rohrbachers Cron

Manahan Trimble & Zimmerman Co., LPA
Business Attorneys in Toledo
and Columbus
Toledo :
p 419-248-2600 | f 419-248-2614
p 614-726-3080 | f 614-392-2608
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