Thomas A. Leonard


Thomas handles subrogation matters. Prior to rejoining Cozen O'Connor in 2024, Thomas served as general counsel for a development company associated with an asset and apartment management company, where he was responsible for drafting and reviewing letters of intent, purchase and sale agreements, reviewing financial and loan documents, reviewing construction management contracts, drafting and reviewing easements and property access agreements, and managing outside litigation (including land use disputes, contract disputes, and resident complaints).

Before that, Thomas spent nearly a decade in Cozen O'Connor's business litigation practice group, where he handled a wide variety of cases, including multimillion-dollar contract disputes, catastrophic personal injury and property damage claims, white collar investigations and defense, shareholder derivative suits, and class actions. He has also been involved in complex and unprecedented disputes with the federal and state governments regarding their power and regulatory authority, resulting in one instance of a $5 million settlement in favor of the client.

Thomas earned his J.D., cum laude, from Villanova University's Charles Widger School of Law, where he was a member of the Villanova Law Review. During law school, he served as an intern for the Honorable Berle Schiller of the U.S. District Court for the Eastern District of Pennsylvania, where he helped prepare for trials, analyzed pleadings, motions, and briefs, and researched areas of law. He earned his B.A., cum laude, from Boston University.




Cozen O’Connor Promotes 20 to Membership

April 08, 2020

Cozen O'Connor is pleased to recognize 20 attorneys with the promotion to member.


Summary and Analysis of Key Provisions of the CARES Act

March 28, 2020

Members of Cozen O'Connor's Coronavirus Task Force provide analysis of the CARES Act and how it will impact small businesses, distressed industries, employers and employees, taxes, and the health care, real estates, and energy industries.

The Cuban Casualties Escaping Obama’s Notice [Wall Street Journal]

March 21, 2016

Hayes Hunt and Thomas Leonard, of Cozen O'Connor's Commercial Litigation department, discuss Obama's recent trip to Cuba and what that means for Cuban-Americans who are bringing lawsuits against the Castro regime.

Cybersecurity…At Least There Is One Thing Congress Can Agree On [Cyber Law Monitor Blog]

December 16, 2014

While most political observers were focused last week on the debates surrounding passage of the so-called “Cromnibus” spending bill, less noted was the fact that the U.S. Congress managed to pass a number of cyber-security bills in a rare moment of bipartisanship and cooperation between the House of...

Pennsylvania Water Law: Contamination Incidents and Liability [American Water Works Association]

October 31, 2014

In an article titled “Pennsylvania Water Law: Contamination Incidents and Liability,” Dexter Hamilton, a member of Cozen O’Connor’s Commercial Litigation Department, Michael Klein, co-chair of the firm’s Energy & Utilities Industry team, and Thomas Leonard, an associate in the Commercial Litigation Department, address recent water contamination incidents and the inevitable legal actions that follow.

Zero-tolerance v. hands-free: What should be your cell phone policy? [InsideCounsel]

September 29, 2014

In an article titled, "Zero-tolerance v. hands-free: What should be your cell phone policy," Dexter Hamilton, a member of Cozen O'Connor's Commercial Litigation Department and Thomas Leonard, an associate in the Commercial Litigation Department, compare the two major policy frameworks governing the use of cell phones by employees while driving: zero-tolerance and hands-free. Each approach has positive aspects, but neither can guarantee that a company will not be held liable for an employee’s distracted driving accident.

Events & Seminars

Past Events


  • Villanova University School of Law, J.D., cum laude, 2013
  • Boston University, B.A., cum laude, 2010
  • New Jersey
  • Pennsylvania