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About me

John concentrates his practice in all aspects of family law.  While John seeks to resolve his client's matters cost-effectively through negotiation and mediation, he is a zealous trial advocate, when necessary, to ensure his client's needs are met.


Practice areas


  1. Family: 80%
    23 years
  2. Probate: 10%
    18 years
  3. Litigation: 10%
    23 years


Payment types:

Cash, Check, Credit card

Attorney endorsements

11 total 

Are you an attorney? Endorse this lawyer

  • William Bruce King

    John Haas and I are both Special Counsel at Litvak Litvak, Mehrtens and Carlton, P.C.. John is a superb litigator with a professional demeanor that I believe is the epitome of professionalism an ethical behavior. He has assisted me in making legal arguments that are complex.


    William King Child support Attorney
    Relationship: Co-worker

  • Mark D Chapleau

    John and I worked on a case on opposite sides. Despite many difficult issues that arose during our case, we were able to fashion an agreement that met the needs of both clients while maintaining our strong advocacy for our clients. Of equal importance was the fact that we were able to stay above the fray of the underlying matter and maintain a professional and cordial relationship as counsel.


    Mark Chapleau Family Attorney
    Relationship: Opposing Counsel on matter

Contact info

Litvak Litvak Mehrtens and Carlton, P.C.

1900 Grant Street, Suite 500
Denver, CO, 80203


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
SuperLawyer - Family LawSuper Lawyers Magazine2016
SuperLawyer - Family LawSuper Lawyers Magazine2015
AV RatedMartindale-Hubbell2014
Case of the Year Award - FinalistColorado Trial Lawyers Association2003
100 Hour ClubLegal Aid Society of Metropolitan Denver1996
Member/EditorUniversity of Denver Law Review1992
Academic HonorsGolden Key National Honor Society1986
Academic/Civic HonorsOrder of Omega National Honor Society1986
Work experience
TitleCompany nameDuration
Of-CounselLitvak Litvak Mehrtens and Carlton, P.C.2015 - Present
Adjunct ProfessorDenver University College Of Law1999 - 2000
PartnerPendleton, Wilson, Hennessey & Crow, P.C.1994 - 2015
Association namePosition nameDuration
Family Law Section - CBAExecutive Council2014 - Present
Family Law Section; Colorado Bar AssociationMember1998 - Present
Colorado Trial Lawyers AssociationMember1997 - Present
Denver Bar AssociationMember1994 - Present
Colorado Bar AssociationMember1994 - Present
Colorado Lawyers Committee, Hate/Violence Task ForceMember1999 - 2006
American Bar AssociationMember1996 - 2006
Colorado Bar Association, Young Lawyers DivisionMember1994 - 2000
Publication nameTitleDate
University of Denver Law ReviewAdministrative Law in the Tenth Circuit: 19921993
School nameMajorDegreeGraduated
University of Denver Sturm College of LawLawJD - Juris Doctor1994
University of ColoradoFinance and MarketingBS - Bachelor of Science1986
Speaking engagements
Conference nameTitleDate
Colorado Bar Association, Family Law SectionSpoliation of Evidence - Now What Do I Do?2016
Boulder County Bar AssociationAnnual Case Law Update - Family Law2016
Family Law InstituteSpoliation of Evidence2015
Colorado Bar Association: Spring UpdateSupreme Court Chief Justice Directives2015
Family Law InstituteFundamentals of Client Representation - Pleadings2013
CastleRockRadio.comDealing with Divorce2011
Arapahoe Community CollegeLegal Guidelines to Small Business Marketing and Advertising1995