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Dianne Whitehorn Lawter

Probate Attorney at Houston, TX

Not yet reviewed
  • Licensed for 32 years
    State TX
    Acquired 1991
    Eligible to Practice in Texas No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Dianne

Learn Dianne’s areas of practice.

Practice areas
  1. Guardianship
    Guardianship litigation.

  2. Litigation

  3. Probate

  4. Trusts
    Will and trust litigation.

Dianne Lawter grew up in Houston. Dianne attended Texas A&M on a four year academic scholarship and received a BBA in accounting, with honors. She attended law school at the University of Texas where she graduated Order of the Coif .

Dianne began her legal career in the Trusts & Estate section of Fulbright & Jaworski. In 1994, Dianne left Fulbright & Jaworski to form Lawter & Lawter with her husband, Jack Lawter. Dianne is a member of the State Bar of Texas, Real Estate, Probate and Trust Law section and the Litigation section. She is a fellow of the Houston Bar Foundation and a past chair of the Houston Bar Association, Trust and Estates Law section.

Her practice for nearly 20 years has been focused entirely on trusts and estate litigation. Dianne was voted a “Super-Lawyer” in Texas Monthly in 2009 (by Thomson Reuters) and was named one of Houston’s top lawyers by H-Texas (2005, 2010). She is Board Certified in Estate Planning and Probate Law.

Dianne Lawter is a recognized author and frequent speaker on trust and estate litigation matters. She is experienced in litigating complex and hotly-contested matters, often with millions of dollars at stake. Dianne is well-versed at the demanding nature of trust, estate, and probate litigation, and has tried cases both to juries and to judges. Dianne has also represented clients before numerous Texas Courts of Appeal and the Texas Supreme Court. In addition to being an experienced litigator, Dianne is also known for her experience in being able to craft successful settlements on terms favorable to her clients, often in situations given little chance for settlement. Through the complex and often protracted and acrimonious litigation process, Dianne takes the burden off of clients and helps position them to be in the best position possible for favorable settlement or, if such a settlement cannot be reached, for litigation.

Photos and videos

Houston Will Contest Attorneys Lawter & Lawter
Houston Will Contest Law Firm Lawter & Lawter
Estate Contest Attorneys Lawter & Lawter
Will Contest Attorneys Lawter & Lawter


Lawter & Lawter
5615 Kirby
Suite 930
Houston, TX, 77005

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AVVO RATING 10.0 (Superb)

Work Experience

  • Partner
  • Lawter & Lawter
  • 1994 - 2012
  • Associate
  • Fulbright & Jaworski, L.L.P.
  • 1991 - 1994


  • University of Texas School of Law
  • Doctor of Jurisprudence/Juris Doctor (J.D.)
  • 1991
  • Texas A&M University
  • B.B.A
  • N/A


  • State Bar of Texas
  • N/A
  • Houston Bar Association
  • Fellow
  • N/A
  • Houston Bar Association, Probate, Trusts and Estate Section
  • Former Chair
  • N/A

Honors and Awards

  • AV Peer Rated Highest Level of Professional Excellence
  • Martindale-Hubbell®
  • 2019
  • Client Champion Award
  • Martindale-Hubbell
  • 2019
  • Top Lawyers
  • H Texas Magazine
  • 2013
  • Top Lawyers
  • H Texas Magazine
  • 2012
  • Top Lawyers
  • H Texas Magazine
  • 2011
  • Houston's Top Lawyers Award
  • H Texas Magazine
  • 2010
  • Texas Monthly Super Lawyer Award
  • Thompson Reuters
  • 2009
  • Super Lawyer
  • Super Lawyers
  • 2009
  • Houston's Top Lawyer Award
  • H Texas Magazine
  • 2005
  • Rising Stars Super Lawyers Award
  • Texas Monthly Magazine
  • 2005
  • Certified for Estate Planning and Probate
  • Texas Board of Legal Specialization
  • 1996
View all awards


  • 2011 Wills & Probate Instutute - Advanced Course
  • Trying a Will Contest
  • 2011
  • The San Antonio Estate Planners Council's Docket Call in Probate Court Estate Planning, Probate and Guardianship Seminar
  • Malpractice and Litigation Involving Trusts and Estates
  • 2011
  • Annual Wills and Probate Institute
  • Depositions in Probate and Trust Litigation
  • 2008
  • HBA Wills & Probate Institute
  • Practical Advice to Estate Concerning Fiduciary Liability and Litigation
  • 2007
  • Wills & Probate Institute
  • The Dysfunctional Family Limited Partnership: Litigation Issues Relating to Family Limited Partnerships
  • 2000
  • Houston Chronicle
  • Requirements for a Valid Will
  • 2000
  • San Antonio Young Lawyers Association's Docket Call In Probate Court
  • What an Estate Planner Needs to Know About Litigation
  • 2000
  • Disability and Elder Law Attorneys Association
  • What an Estate Planner Needs to Know About Litigation
  • 1999
  • 9th Annual Advanced Drafting: Estate Planning and Probate
  • What an Estate Planner Needs to Know About Litigation
  • 1998
  • Legal Assistants Division
  • What an Estate Planner Needs to Know About Fiduciary Litigation
  • 1997
  • Wills & Probate Institute
  • Tortious Interference with Inheritance Rights
  • 1994
  • Advanced Estate Planning & Probate Course
  • Fiduciary Liability - A Case Study
  • 1993
View all publications

Speaking Engagements

  • Texas Association of Civil Trial and Appellate Specialists
  • How to Pick a Jury and Try a Will Contest and How a AWill Contest Differs From Other Litigation
  • 2010
  • State Bar Annual Meeting
  • Practical Advice Concerning Will Contests and Other Probate Litigation
  • 2003
  • 2002 Wills & Probate Institute
  • Practical Advice to Estate Planning Attorneys Concerning Fiduciary Liabiity and Litigation
  • 2002
  • Wills & Probate Institute: Focus on the Fundamentals
  • Litigation Concerns for Estate Planners
  • 2000
  • Houston Bar Association Seminar: Guardianship and Elder Law Issues for the Practioner adn Ad Litem Seminar
  • Role of the Guardian
  • 2000
  • Advanced Estate Planning
  • The Dysfunctional Family Limited Partnership: Litigation Issues Relating to Famiy Limited Partnerships
  • 2000
View all speaking engagements

Attorney endorsements

Received (2)
Given (2)
Endorse Dianne
Trusts Attorney | Feb 02
Relationship: Worked together on matter
"Dianne Lawter is the most tenacious trial lawyer I know in estate, trust, and fiduciary litigation."
Probate Attorney | Feb 02
Relationship: Worked together on matter
"Dianne is a superb estate and trust litigator with experience throughout Texas."

Avvo Contributions

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Houston Probate Lawyer Dianne Whitehorn Lawter
Dianne Whitehorn Lawter
Probate Attorney
Houston, TX
Licensed for 32 years