G. Mark Thompson: Lawyer with Marshall Dennehey Warner Coleman & Goggin, P.C.

G. Mark Thompson

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Mark Thompson is the Regional Managing Partner for the four Florida offices of Marshall, Dennehey, Warner, Coleman & Goggin. Mark's current practice is focused in the areas of corporate, premises, and products liability defense with particular emphasis in the theme park and brewing industries.
Shareholder, Member, Executive Committee
Philadelphia,  PA  U.S.A.
Phone(215) 575-3570

Peer Rating
AV® Preeminent

Client Rating

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Experience & Credentials Ratings & Reviews

Practice Areas

  • Product Liability
  • Premises Liability
  • Insurance Defense
  • Alcoholic Beverages
Contact InfoTelephone: (215) 575-3570
Fax: (215) 575-0856
University University of Florida, B.A., 1984 Presidential Recognition for Outstanding Contribution to the University; Membership, The American Journal of Trial Advocacy; American Journal of Trial Advocacy, Member, 1987 - 1989
Law SchoolCumberland School of Law, Samford University, Birmingham, Alabama, J.D., 1989; Dean's List, Cumberland School of Law
Admitted1989, Florida; 1990, U.S District Court Middle District of Florida; 1998, U.S. Court of Appeals 11th Circuit; 2012, Pennsylvania

Associations & Memberships
•Defense Research Institute
•International Amusement & Leisure Defense Association
•International Association of Amusement Parks and Attractions (IAAPA)
•Orange County Bar Association


Mark Thompson is a member of the three-person Executive Committee, which is the governing body of our 480 lawyer firm and serves to advance and implement its strategic goals and objectives. Since 2008, Mark has also served on the firm's Board of Directors. In addition to his role in the leadership of the firm, Mark has distinct responsibility for the oversight of our 19 regional offices located across Pennsylvania, New York, New Jersey, Ohio, Delaware and Florida.

Mark's legal practice is focused in the areas of corporate, premises and products liability defense with particular emphasis in the theme park and brewing industries. During his career, Mark has defended a variety of clients in high-profile and complex cases. For almost 20 years, throughout Florida and other jurisdictions, he has had the privilege of representing the former Anheuser-Busch Companies, now operating independently as Anheuser-Busch InBev and SeaWorld Entertainment, Inc.

Rated AV Preeminent by Martindale-Hubbell, recognized in 2006, 2007, 2013 and 2014 as a Florida Super Lawyer and in 2012 as one of Florida's Legal Elite by Florida Trend Magazine, Mark is admitted to practice before the Florida Supreme Court, the United States Court of Appeals for the Eleventh Circuit and the United States District Court for the Middle District of Florida. He has tried cases in county, circuit and federal courts and argued before the District Courts of Appeal. In 2010, he represented a client testifying before the U.S. House of Representatives in Washington, D.C.

A graduate of the University of Florida, Mark worked as an insurance adjuster for two years before starting law school. As a law student, he made the Dean's List and was elected to membership of The American Journal of Trial Advocacy, where he authored Protective Orders: Sword and Shield in the War of Discovery, 12:3 The American Journal of Trial Advocacy (Summer 1989). Mark was also active in moot court and mock trial competitions before graduating from the Cumberland School of Law in 1989.

After graduation, Mark joined the defense litigation firm of Rumberger, Kirk & Caldwell where he was a partner and practiced for 12 years. In 2001, Mark joined Marshall Dennehey Warner Coleman & Goggin, assuming management of the firm's Orlando office. His responsibilities were increased in 2004 when he was appointed head of the state's casualty practice group and again in 2006 when he was appointed regional managing attorney for the four Florida offices. In 2008, Mark was elected by his fellow shareholders to serve on the firm's nine-member board of directors.

Classes/Seminars Taught

Florida Premises Liability - Investigation and Defense

Florida Liquor Liability

Spoliation of Evidence

•The seminars mentioned above have been presented on multiple occasions to a variety of clients.

•In addition, for the past four years, Mark has moderated the Florida Associate's Conference in Orlando, Florida for attorneys in the firm.

Published Works

•Protective Orders: Sword and Shield in the War of Discovery, 12:3 The American Journal of Trial Advocacy, Summer 1989

Honors & Awards
• AV Preeminent by LexisNexis Martindale-Hubbell
•Florida Super Lawyer, 2006-2007, 2013-2014
•Florida Trend Magazine's Florida Legal Elite, 2012
• Claims & Litigation Management Alliance

Year Joined Organization: 2001


On the Pulse...Message from The Executive Committee
Defense Digest Article • September 1, 2014
By G. Mark Thompson, Esq.* “It is the responsibility of leadership to provide opportunity and the responsibility of individuals to contribute.”..., Defense Digest, Vol. 20, No. 3, September 2014Defense Digest is prepared by Marshall Dennehey Warner Coleman & Goggin to provide information on recent legal developments of interest to our readers. This publication is not intended to provide...


Marshall Dennehey's Chairman and COO Retires; Peter S. Miller's Departure Ushers in New Era of Leadership
July 2, 2014
Marshall Dennehey Warner Coleman & Goggin announced today the June 30th retirement of Peter S. Miller, longtime Chief Operating Officer, Chairman of the Board of Directors, Executive Committee member, Director of the Workers' Compensation Department, and Managing Attorney of the Philadelphia...
Marshall Dennehey Warner Coleman & Goggin Elects Board of Directors
December 19, 2012
December 2012 - Philadelphia, PA - The Executive Committee of the defense litigation firm Marshall Dennehey Warner Coleman & Goggin (MDWC&G) is pleased to announce that Robin Snyder, Esq. was elected as a member of the firm's board of directors as well as senior vice president at the annual...


2015 CLM Annual Conference
Conference • Mar 25, 2015 Michele Punturi, a shareholder in the Workers' Compensation Practice Group, Jeffrey Rapattoni, a shareholder with the Fraud/Special Investigation Practice Group, and G. Mark Thompson, a member of the executive committee and the firm's board...

Reported CasesRepresentative Cases: Anheuser-Busch, Inc. v. Lenz, 669 So. 2d 271 (Fla. 5th DCA 1996); Becton v. Metal Container Corp., 856 So.2d 982 (Fla. 1st DCA 2003); Jordan v. Sea World of Florida, Inc., 938 So.2d 991 (Fla. 5th DCA 2006); Badillo v. Anheuser-Busch, 19 Fla. L. Weekly Fed. D 641 (M.D. Fla. 2006); Significant Representative Matters: Defended a corporation and obtained summary judgments in multiple federal lawsuits alleging sponsorship, production, distribution and sale of videos depicting plaintiffs' underage participation in various spring break contests. Defended a manufacturer and obtained satisfactory confidential resolution of claims brought by 51 factory employees alleging toxic exposure. Defended a state agency and obtained defense verdict in wrongful death trial alleging inadequate traffic control. Defended a major insurer and obtained defense verdict in trial brought by owner of an oddities museum whose collection and building was completely destroyed by fire. Defended a tourist destination and obtained summary judgment in a negligence action brought by a contracted performer rendered quadriplegic as a result of an accident during a gymnastic slam dunk exhibition. Defended a company and obtained defense verdict on appeal in lawsuit alleging bottle exploded while being handled by plaintiff. Defended a tourist destination and obtained defense verdict in trial alleging inadequate slip resistance of drainage grates. Defended and settled numerous lawsuits involving tractor trailer rollovers allegedly caused by improper loading of cargo. For nearly 20 years, defended theme parks and tourist destinations throughout Florida in hundreds of cases involving amusement rides, wild animals, negligent security, E-coli outbreaks, slip and falls, defamation, food poisoning, false imprisonment and matters of intellectual property.

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Office Information

G. Mark Thompson

2000 Market Street, Suite 2300
PhiladelphiaPA 19103


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