Michael A. Hamilton is a partner in the firm's Global Insurance Services, Management and Professional Liability, Cybersecurity and Data Privacy, and Environmental Practice Groups and a leader of the GIS Pennsylvania and Ohio teams. Mike handles sophisticated and high-exposure insurance coverage claims and commercial litigation, and focuses his practice on environmental, professional liability, construction defect, transportation, and business torts/advertising injury claims. He has been lead defense counsel in class action litigation, representing insurance companies, self-insurers, and transportation entities. He also has extensive appellate experience, arguing numerous appeals in state and federal courts across the country.

Mike has more than 25 years of experience handling insurance coverage claims and litigation on behalf of major insurers throughout the United States. He has an extensive background in environmental claims under commercial general liability policies and specialty environmental policies, and has assisted clients with claims involving the application of the pollution exclusion, surface and groundwater contamination, ground pollution, and hydro-fracking.

Mike has also advised clients on a number of significant claims involving data privacy, intellectual property, false advertising, and business torts. His experience includes counseling carriers on policy form wording with respect to data breaches, cyber liability, and intellectual property infringement claims, and was recently involved in a case that was closely watched by the insurance industry involving insurance coverage for a highly publicized data breach. Mike was also involved in two groundbreaking cases holding that claims for faulty workmanship in construction were not covered under CGL policies. He has represented insurance companies in bankruptcy court and has formulated strategies for carriers to best protect their rights when policyholders are in bankruptcy. He has also represented clients in commercial disputes and litigation, including matters relating to contractual indemnity, transportation accidents, and governmental immunity.

Mike currently serves as vice chair of former chairs for the Insurance and Reinsurance Committee of the International Association of Defense Counsel, an invitation-only professional association for corporate and defense lawyers around the world, after having recently served a two-year term as the committee's chair. He is also a frequent speaker and author on insurance litigation and emerging issues, and was recently named a fellow of the American College of Coverage Counsel, an exclusive group of the top insurance attorneys in North America.

Prior to law school, Mike received his bachelor's from Pennsylvania State University. He went on to earn his juris doctor from the Dickinson School of Law at Penn State, where he was a member of the Dickinson Law Review.

Representative Matters
  • Prevailed before the U.S. Court of Appeals for the Third Circuit and the Illinois Court of Appeals, obtaining favorable rulings in related matters involving insurance coverage for a class action asserting violations of the federal Telephone Consumer Protection Act.
  • Secured summary judgment for his client in federal court in a case concerning insurance coverage for environmental liabilities arising from the alleged discharge of pollutants by numerous property owners onto a neighboring property.  
  • Obtained a victory for a transportation authority before the Pennsylvania Supreme Court, in a far-reaching decision addressing the impact of workers’ compensation liens on personal injury settlements involving state governmental entities.  
  • Succeeded before the North Carolina Supreme Court in a multimillion-dollar case involving insurance coverage for false advertising and trademark infringement claims; the opinion was recognized by Mealey’s as one of the most significant U.S. insurance decisions in 2010.
  • Served as trial and appellate co-counsel for a domestic insurer in the Southern District of New York and the Second Circuit in the World Trade Center Property Insurance Litigation, prevailing in a nationally recognized case involving attempts by the World Trade Center’s leaseholder to recover insurance proceeds after September 11.
  • Represented his client before the Pennsylvania Commonwealth Court, resulting in a ruling of first impression that self-insured commercial entities are not liable under Pennsylvania's bad faith statute.
  • Martindale-Hubbell Peer Review Rating: AV Preeminent
  • Chambers USA Ranked Lawyer, Pennsylvania — Insurance, 2018 
  • Best Lawyers in America — Insurance Law, 2018–19
  • Pennsylvania Super Lawyers, Insurance Coverage, 2010–18
  • Pennsylvania Super Lawyers, Rising Stars, 2005
  • Harleysville Mut. Ins. Co. v. Buzz Off Insect Shield, L.L.C. — recognized by Mealey’s as one of the United States’ most significant insurance decisions in 2010
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Professional Affiliations
  • International Association of Defense Counsel:
  •       Chair, Eastern Pennsylvania State Committee
  •       Vice Chair of Former Chairs, Insurance and Reinsurance Committee, 2018 to present
  •       Immediate Past Chair, Insurance and Reinsurance Committee, 2016–18
  •       Civil Justice Response Committee
  • American College of Coverage Counsel, Fellow
  • American Bar Association, Tort and Insurance Practice Section
  • American Bar Foundation, Fellow
  • Defense Research Institute: Member, Insurance Law Committee
  • Claims and Litigation Management Alliance (CLM)
Admitted to Practice
  • Pennsylvania
  • New Jersey
  • Ohio
  • U.S. District Court for the District of New Jersey
  • U.S. District Courts for the Eastern, and Western Districts of Pennsylvania
  • U.S. District Court for the Eastern District of Wisconsin
  • U.S. Courts of Appeals for the Second and Third Circuits
  • Dickinson School of Law of the Pennsylvania State University, J.D., 1993
  • Pennsylvania State University, B.A., 1986


  • “Pennsylvania” (Co-Author), Insurance Policy Rescission Compendium, 2019
  • Co-Presenter, "Use of Extrinsic Evidence in Analyzing the Duty to Defend," Client Presentation, Wayne, PA, December 7, 2018
  • Co-Presenter, "Covered vs. Non-Covered Claims: Allocating Defense & Indemnity Payments," Client Presentation, Wayne, PA, December 7, 2018
  • Presenter, "Drilling Down on the Business Risk Exclusions," DRI Northeast Regional Claims Conference, Hartford, CT, September 27, 2018
  • Presenter, "Evolving Insurance Coverage Issues: Challenges in Opioid Litigation," IADC Annual Meeting, Lisbon, Portugal, July 7, 2018
  • Presenter, "The Insurance Coverage Update," Perrin Opioid Litigation Conference, Dallas, TX, June 28, 2018
  • Co-Presenter, "Covered vs. Non-Covered Claims: Allocating Defense & Indemnity Payments," GS Presentation, New York City, NY, June 20, 2018
  • Co-Author, “Emerging Insurance Coverage Issues Involving Opioid Litigation,” Westlaw Journal Insurance Coverage, April 13, 2018
  • Co-Presenter, "Coverage Strategies and Solutions for Widespread Environmental Harm," Containing Disasters Seminars, Chicago, New York City, and Philadelphia, January 22-25, 2018
  • Co-Presenter, "Covered vs. Non-Covered Claims: Allocating Defense and Indemnity Payments," October 25, 2017
  • Co-Author, “Avoiding Bad Faith, and Other Emerging Issues Involving Eroding Limits Policies,” IADC Committee Newsletter, October 2017
  • Co-Presenter, "The Latest in Coverage: Signifcant Toxic Tort and Environmental Law Decisions that will Impact You," Goldberg Segalla Toxic Torts and Environmental Law Seminar, May 23, 2017
  • Presenter, "Money for Nothing: Bad Faith Claims Involving Deductibles, Retentions, Eroding Limits, and Non-Traditional Policies," DRI Bad Faith and Extra-Contractual Liability, Boston, MA, May 31, 2017
  • Co-Presenter, "What Has Eight Corners But Isn't a Cube? Issues Arising From the Duty to Defend," IADC Mid-Year Meeting, Scottsdale, AZ, February 21, 2017
  • Co-Author, “Accessory Overload: Wearable Technology’s Impact on the Insurance Industry,” IN Magazine, Summer 2016
  • Presenter, "The Evolution of Bad Faith in Professional Liability Claims," International Association of Defense Counsel's Professional Liability Roundtable, Chicago, May 12, 2016
  • Co-Author, “Accessory Overload: Wearable Technology’s Impact on the Insurance Industry,” ICMIF Voice, September 2015
  • Presenter, “Construction and Specialty Risk Policies,” DRI Insurance Coverage and Claims Institute, Chicago, March 27, 2015
  • Author, “Insurance Bad Faith Law: A 2014 Retrospective and a Look Ahead to 2015,”Claims Management, December 21, 2014
  • Quoted in “California Undercuts Policyholders in Implied Disparagement Rows,” Law360, June 24, 2014
  • Co-Author, “Advertisement-Specific Exclusions,” Defense Research Institute’s Coverage B: Personal and Advertising Injury Compendium, May 20, 2014