Mark’s courtroom accomplishments include some of the largest jury verdicts in the country, and his work has been widely recognized by both his colleagues and the press. He is lead co-counsel for Terror Victims v. Arab Bank, a groundbreaking international terrorism lawsuit that has been featured on the Fox News Channel, Court TV, The Wall Street Journal, and other national and international media. In 2014, Mark helped convince a New York federal jury to issue liability findings against Arab Bank, clearing the way for a financial damages trial. The verdict represented the first time in U.S. history that a foreign bank has been found liable for materially supporting terrorism.

In May 2015, Mark argued and won a U.S. Supreme Court ruling in a patent infringement case where the firm previously had won a sizable judgment. The original jury verdict was recognized by VerdictSearch and Texas Lawyer newspaper as one of the top 10 verdicts statewide in 2011. 

In October 2017 Mark returned to the U.S. Supreme Court, as it considered whether corporations could face liability for violating the Alien Tort Statute in Jesner v. Arab Bank.

Board Certified in Criminal Law by the Texas Board of Legal Specialization
Board Certified in Civil Trial Law by the Texas Board of Legal Specialization
U.S. Supreme Court
U.S. Court of Appeals for the Federal Circuit
U.S. Court of Appeals for the Fifth Circuit
U.S. Court of Appeals for the Second Circuit
U.S. District Courts for the Northern, Southern, Eastern and Western Districts of Texas

Southern Methodist University Dedman School of Law, J.D., cum laude
The University of Texas, B.A. with High Honors 

"Fighting Terror-Financing in the Courtroom,” Austin Litigation Update Institute, January 2018
“Litle v. Arab Bank,” Waco and College Station ABOTA Judicial Dinner, November 2017
“Winning the Hard Cases,” Dallas Bar Association, March 2017
“Trial Skills Bootcamp – Cross Examination,” Dallas Association of Young Lawyers, June 2015
“Litigating Terror Financing,” University of California Hastings School of Law, February 2015
“Cross-Examination in a Criminal Case,” 6th Annual Criminal Defense Trial Skills & Trial Law Program presented by The Center for American and International Law, 2010

Supreme Court Rules Against Cisco in Patent Case
Crusade Against Terrorism Ends in Victory for Dallas Lawyer
Multimillion-Dollar Verdict in Bus Crash Case
Zion’s Avenger
Court TV Airs Texas Bus Crash Trial
U.S. Supreme Court Victory in Patent Infringement Case
Liability Verdict Against Arab Bank in Terrorism Case
Multimillion-Dollar Hedge Fund Defense Win
Multimillion-Dollar Million Patent Infringement Verdict
2011 Dallas Bar Association Trial Lawyer of the Year