William Ellerman is a Principal in the Dallas office of McKool Smith. Mr. Ellerman is an accomplished trial lawyer with several multimillion-dollar jury and bench trial verdicts under his belt throughout his career that covers over two decades. He litigates complex business and intellectual property cases on behalf of corporations, universities, and individuals in state and federal trial and appellate courts across the United States. His practice, which includes representing plaintiffs and defendants, spans several areas of complex disputes, including intellectual property, contracts, business torts, banking, securities, oil and gas, and media law. 


Rankings & Honors

  • Named by his peers to the list of Super Lawyers 2008 - present

Media & Events


J.D., summa cum laude, Baylor University School of Law, 1998

  • Graduated first in class
  • Symposium Editor and Notes and Comments Editor, Baylor Law Review
  • W. Frank Newton Law Review-Advocacy Award
  • James P. Alexander Memorial Award

B.A., cum laude, Tulane University, 1995

Court Admissions

  • State of Texas
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Fifth Circuit
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Courts for the Northern, Eastern, and Western Districts of Texas
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