Attorney Profiles

Justin V. Sumner Headshot

Justin V. Sumner


Justin’s practice involves a wide range of general civil and complex commercial litigation matters in both state and federal courts around the country. From representing large Fortune 500 companies to 'Mom and Pop shops,' Justin’s role since joining the firm in 2006 has consisted of first and second chairing jury trials, arbitration, bench trials, motion practice, settlement negotiations, discovery planning, and he has taken and defended hundreds of depositions around the country.

At our firm Justin also handles matters that come into the firm in the areas of labor and employment law, criminal law, and plaintiff representation, including the litigation of matters in the areas of fraud, consumer law, DTPA, medical malpractice, and catastrophic personal injury.

Representative Matters

  • Successful defense of Fortune 300 company in multi-million dollar Whistle Blower/Qui Tam litigation in the State of New York.
  • Successful settlement negotiated for Fortune 300 Company involving an IT Outsourcing breach of contract case in Federal Court in the Eastern District of Virginia.
  • Successful representation and settlement of legal dispute between Fortune 300 Company v. IBM.
  • Representation of, and multi-six figure settlement obtained for relator whistleblower in qui tam action brought in the State of Texas.
  • Representation of, and multi-six figure settlement obtained for relator whistleblower in qui tam action brought in the State of Texas.
  • Representation and successful settlement of an airline company in $150 million breach of contract litigation, fraud, and alter ego/piercing the corporate veil claims. (DDH Aviation v. 4KS)
  • Successful defense of Fortune 300 Company involving labor and employment dispute in Los Angeles, California. Favorable settlement obtained.
  • Successful Representation and six-figure settlement obtained for an individual vs. Fortune 500 company involving age discrimination and FMLA Retaliation. (Family Medical Leave Act) in Federal Court Northern District of Texas. Prevailed on the motion for summary judgement.
  • Successful plaintiff representation with a multi-six figure pre-filing settlement of a labor and employment matter involving sexual and gender discrimination.
  • Representation of professionals from publicly traded company in investigations brought by the SEC following restatements of the companies’ financial statements.
  • Assisted in the successful representation of Fortune 500 Company Whistleblower Qui Tam litigation in the State of Iowa. The State chose not to intervene.
  • Assisted in successful litigation involving general employment matters: covenants not to compete, breaches of fiduciary duties, wrongful termination in numerous matters throughout the country.
  • Assisted in representation of Forbes 200 IT outsourcing company dispute regarding fraud and breach of contract.
  • Led global investigation of a Fortune 250 company involving trade secret violations, copyright infringement, and software misappropriation.
  • Lead attorney DWI jury trial. Not guilty.
  • Represented numerous individuals whom were were victims of premises liability, medical malpractice, automobile accidents, and those victims of consumer law violations.


  • Whittier Law School, Costa Mesa, California
    Juris Doctor, December 2006
  • The University of Technology School of Law, Sydney, Australia
    Credit earned, August 2005
  • University of Arkansas, Fayetteville, Arkansas
    Bachelor Business Administration; Marketing/Management


  • Dallas Bar Association
  • Texas Trial Lawyers Association
  • Dallas Association of Young Lawyers
  • State Bar of Texas

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