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About me

Derek was born and bred to be a trial attorney.  The son of a successful attorney who died as a result of a negligently maintained airplane, Derek was raised by his mother on their ranch near Waco, Texas.  For obvious reasons, Derek is passionate about his work for the injured and those who have lost loved ones because of someone’s negligence.

Derek is a fearless litigator.  He has single-handedly recovered settlements and verdicts from some of the biggest companies in America and the world, including Union Pacific Railroad, Cooper Tire and Rubber Company, Nationwide Insurance Company and dozens of others.  Derek has represented injured people and surviving loved-ones all across the globe.  He has been recognized as Metropolitan Magazine’s “Who’s Who”, Texas Monthly Magazine’s “Texas Rising Star,” and “Top 100 Trial Lawyers in Texas” by ATLA.

Derek does whatever it takes to fully compensate his clients.  If that means taking the case to trial then Derek and his clients have the advantage.  Derek typically tries several cases a year to successful verdicts.  Not only does he win, but he wins big, including obtaining the largest individual civil rights verdict in Texas history – over $16 Million in January of 2011.  Again in March, 2012, Derek was co-lead in a trial against DuPont where the Jury returned a verdict for $11,965,000 for his clients.  Over his career, he has collected millions of dollars for his clients. 


Languages spoken: Spanish, English

Photos and videos

78656 1299774721

Practice areas


  1. Personal Injury: 85%
  2. Civil Rights: 10%
  3. Maritime: 5%



Contingent (33-50%)

Payment types:

Cash, Check

Attorney endorsements

9 total 

Are you an attorney? Endorse this lawyer

  • Daragh John Carter

    Excellent trial lawyer. Fearless. Several seven figure verdicts speak for themselves.


    Daragh Carter Personal injury Attorney
    Relationship: Fellow lawyer in community

  • Mitchell John Howie

    I endorse this lawyer. I went to law school with Derek and have known him for over 12 years. He is an extremely diligent and smart lawyer that cares for his clients. You are in good hands with Derek!


    Mitchell Howie Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

The Merman Law Firm

1201 Shepherd Dr.
Houston, TX, 77007


TXEligible To Practice In Texas 200408/17/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Top 100 Trial LawyersThe National Trial Lawyers2010
Top Young Lawyers in TexasTexas Monthly Magazine2009
Who's WhoThe Metropolitan2006
Work experience
TitleCompany nameDuration
Managing PartnerMerman Law Firm2011 - Present
AssociateSimon & Luke, LLP2009 - 2011
Managing PartnerMerman & Dunk, LLP2006 - 2009
Associate AttorneySimon & Luke, LLP2004 - 2006
Association namePosition nameDuration
Maritime Law Association of the United StatesAssociate2005 - Present
Texas Trial Lawyers AssociationAttorney Member2005 - Present
Houston Young Lawyers AssociationAttorney Member2004 - Present
American Bar AssociationAttorney Member2004 - Present
American Association for JusticeAttorney Member2004 - Present
Legal cases
Case nameOutcome
Roye v. DuPontVerdict for the Plaintiff - $11,965,000
Roberts v. Jefferson County, et. al.Verdict for Plaintiff - $16,050,870 (largest reported individual civil rights case in Texas history)
Sigler et. al.Settlement for Plaintiff (Confidential)
See all legal cases 
Publication nameTitleDate
sky radio magazineHow to choose your personal injury attorney2008
School nameMajorDegreeGraduated
University of Houston Law CenterLawJD - Juris Doctor2004
Baylor UniversityBiologyBS - Bachelor of Science1998
Speaking engagements
Conference nameTitleDate
HBA Law WeekGeneral Legal Q&A2011