Mark D. Winnubst

Sheils Winnubst PC

Dallas, Texas 75225


Bankruptcy, Child Custody, Child Support Modification, Commercial, Divorce, Divorce Modification and Enforcement, Family, Guardianship, Landlord/Tenant, LGBT, Real Estate, Trusts and Estates

Practice Areas and Experience:

Since 1989, Mark has provided practical, caring and efficient advice and counseling throughout the spectrum of small business and personal legal needs.  From entrepreneurs and start up business developments to complex acquisitions and constantly changing requirements of growing businesses, Mark provides effective guidance for the practical business owner.  Mark handles business and commercial litigation in state, federal and bankruptcy courts, including matters involving contractual disputes, real estate litigation, collections, fraudulent transfers, creditor’s rights and the myriad disputes which arise in the flux of modern business operations.

Mark has also practiced extensively in the areas of family law, handling divorces, custody disputes, modifications and enforcement actions, as well as participating in collaborative law processes, and including probate, guardianships, wills and will contests.

Since 1996, Mark has served as a mediator in several civil litigation matters.

Licenses and Admissions:

United States District Court for the Northern and Eastern Districts of Texas
United States Fifth Circuit Court of Appeals.
All Texas State Courts

Professional Affiliations:

Member of the Commercial and Business Litigation and Family Law
Sections of the State Bar of Texas

Member of the Dallas Bar Association and Collin County Bar Association

Award winning contributor to Legal Aid of Northwest Texas


University of Notre Dame (B.A., 1985; MBA, cum laude 1989; Juris Doctor 1989)

Board Certifications:

Mark practices in a variety of areas of law and, therefore, by choice, is not certified by the Texas Board of Legal Specialization in any one particular area of law.

Sheils Winnubst PC offers practical, effective legal consultation and advice across a wide spectrum of general, civil, business, family and personal issues, including both litigation and transactional matters. From negotiation of critical agreements to trial of commercial disputes, our clients receive thoughtful, focused legal counsel for reasonable fees.

Since 1996, Craig and Mark have joined to provide their insightful legal acumen to myriad small business owners and individuals negotiating the complex maze of the modern world.  At Sheils Winnubst, PC we strive to provide the highest quality, affordable representation to persons at all stages of business and personal development all in a practical, efficient and effective manner.

We’re the ones you are thinking of when you tell someone, “Let me ask my lawyer.”

1701 North Collins Boulevard, # 1100
Richardson, TX 75080

P: 972-644-8181
F: 644-8180
E: [email protected]