“We retained Reese Marketos LLP and were fortunate enough to have Pete Marketos and Leslie Chaggaris represent us in a complex business lawsuit. From inception to end, Pete and Leslie provided a well-planned strategy and exceptional trial preparation, both of which were flawlessly executed. Their ability to anticipate the next move of the opposing party and their ability to communicate with and win over the jury was nothing short of remarkable.” — Martin Toha
Leslie has proven to be an absolute force in the trial bar with more experience trying complex commercial cases than any other young trial lawyer in Dallas. In 2013 alone, Leslie helped clients win seven, eight, and nine-figure jury verdicts—including the largest commercial verdict in the nation in 2013. She has not lost a civil jury verdict in her career, and every verdict has been a complete victory for her clients, including:
- Fraud verdict against Mercedes-Benz featured in National Law Journal’s Big Money Wins (March 2013—two-week jury trial in Cameron County)
- “Take-nothing” jury verdict on seven claims against her client seeking $13 million in damages for breach of contract, trade secret violations, and tortious interference (November 2013—two-week jury trial in Dallas County)
- $5.5 million judgment on behalf of her client for fraud and breach of contract (December 2013—two-week jury trial in Dallas County)
- Judicial dissolution of partnership on behalf of her client and jury verdict for breach of fiduciary duty, breach of contract, and theft against former partner—resulting in “divorce” of major partnership at DFW Airport concessions and complete victory for her client (June 2014—six-week jury trial in Dallas County)
- Complete defense verdict on claims of breach of contract and fraud against her client; and a verdict awarding damages and attorneys’ fees to her client on its counterclaim (August 2015—six-day jury trial in Dallas County)
Leslie is also very involved in the Dallas Association for Young Lawyers. For the past three years, she has served as a co-chair for DAYL’s Trial Boot Camp and has been instrumental in establishing DAYL’s Lawyer on Loan program, which pairs young lawyers with local municipalities to gain jury trial experience. She also serves on the Board of Trustees for the DAYL Foundation. In 2014, Leslie was awarded the DAYL Presidential Merit Award for her commitment to DAYL.
Leslie also serves on the Committee for a Qualified Judiciary, a non-partisan, non-profit organization that promotes a competent, fair, and impartial justice system in Dallas County. In addition to her service to the bar, Leslie also served, for several years, on the Dallas Area Regional Advisory Council for the Make-A-Wish Foundation of North Texas.
For the last four consecutive years, Super Lawyers by Thomson Reuters named Leslie a Rising Star, an honor that is entirely peer-nominated and reviewed.
In 2018, Leslie was named as one of D Magazine’s Best Lawyers Under 40.
- Developing Programming for Trial Lawyers in Mexico, GlobalTies U.S. and Iniciativa Merida, 2018
- Preparing and Arguing the Jury Charge, DAYL Trial Skills Series, 2018
- Presenting Effective Closing Arguments, DAYL Trial Skills Boot Camp, 2017
- Seeing the Forest and the Trees: How Young Trial Lawyers Helped Win Major Jury Verdicts While Maintaining Caseloads, Dallas Association of Young Lawyers, 2015
- Problems Young Lawyers Face at the Courthouse, Dallas Bar Association Trial Skills Section, 2014
- Recognized in National Law Journal’s Big Money Wins
- Recognized in 10 Million Dollar Club, by Texas Lawyer, for 2 Verdicts in 2014
- 2018 D Magazine’s Best Lawyers Under 40
- Rising Star by Super Lawyers (Thomson Reuters), 2015 – 2018
- 2014 DAYL Presidential Merit Award
- April 2013 DAYL’s One to Watch
Texas Tech University School of Law
Juris Doctor, summa cum laude, 2009
Order of the Coif
Texas Tech Law Review
D. Murray Hensley Award for Trial Excellence
University of North Texas
Bachelor of Arts, cum laude, 2005
Texas Supreme Court; U.S. District Court for the Northern, Eastern, and Western Districts of Texas; United States Court of Appeals for the Fifth Circuit