Mr. Walker served two clerkships at the U.S. Supreme Court, first with Justice Samuel A. Alito, Jr. and later with Justice Neil M. Gorsuch. Mr. Walker also served as a law clerk to then-Judge Gorsuch prior to joining MoloLamken in 2010.

Lucas Walker's practice focuses on appellate litigation in federal and state court. He has argued before the U.S. Supreme Court and the U.S. Courts of Appeals for the Fourth, Seventh, Tenth, and Federal Circuits.  He has also authored numerous briefs in the U.S. Supreme Court, various federal courts of appeals, and state supreme court. His practice also includes motions practice and issue development at the trial level. Mr. Walker’s experience covers a broad range of subject matter, including intellectual property, administrative and constitutional law, bankruptcy, foreign sovereign immunity, telecommunications, energy, and white collar defense.