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About me

Gregory C. Mack is the founder of Mack Law Group, PLLC, a business litigation law firm that provides an array of legal services to a variety of businesses - whether established or in the startup phase - across all major industries and to the people who run these concerns, including officers, directors and owners.  Greg has over 20 years of experience practicing complex business litigation and he takes the time to understand his clients’ business and the challenges in order to develop litigation strategies to meet their goals.


Prior to founding MLG, Greg co-founded a boutique litigation firm in Dallas, Texas and spent more than 15 years honing his trial skills at several prestigious national litigation firms representing Fortune 500 companies in state and federal courts across the United States.  Greg acquired unique experience early in his career by being mentored and trained by some of the finest trial lawyers in Texas.  First as a second chair trial attorney and then as lead trial counsel on numerous sophisticated litigation cases with multi-million dollars at stake.  As a result, the attorneys at MLG have the knowledge, experience and resources to handle broad based complex legal disputes of all sizes for its clients.


Our firm is is conveniently located in the heart of Collin County, Texas, one of the most dynamic and fastest growing counties in Texas.  We primarily serve our local community with many of our clients based in the cities of Allen, McKinney, Plano and Frisco, but we often represent clients in whatever venue their legal matter is pending.  While we provide the same skills and expertise available at a major law firm, we do so without the extravagant overhead expense which many firms pass on to their clients.  We staff lean, we prepare efficiently and we align our economic interest with those of our clients.


At MLG, we strive to establish and nurture long term advisory relationships with each of our clients.  As a result, we partner with our clients to ensure that their success leads to our success.  On certain matters, this results in a blended fee arrangement which allows our clients greater certainty in determining day-to-day legal costs while at the same time incentivizing our firm to win, rather than run up needless billable hours.


The firm's comprehensive legal services include, among others, commercial litigation, business formation, strategic planning and guidance, partnership disputes, real estate, insurance, fraud, banking and finance, labor and employment, bankruptcy, DTPA, construction, product liability and personal injury.


Outside of his career, the charities closest to Greg's heart are Autism Speaks and Operation Kindness, where he has volunteered time and resources over the years.  His beloved German shepherd was adopted from Operation Kindness almost 10 years ago as a puppy and is still one of his best friends today.


Greg enjoys outdoor activities including golf, running and anything related to travel or nature.  He also spends time reading on a variety of interests and enjoys learning new skills and trying things that are otherwise challenging or uncomfortable as often as possible.


For more from Greg, follow him @MackLawGroup 



Languages spoken: English, Spanish

Practice areas


  1. Litigation: 70%
    21 years, 375 cases
  2. Contracts: 10%
    21 years, 125 cases
  3. Business: 10%
    21 years, 150 cases
  4. Employment: 10%
    17 years, 33 cases



Retainer (always)

Payment types:

Cash, Check, Credit card

Attorney endorsements

24 total 

Are you an attorney? Endorse this lawyer

  • David Scott Snellings

    I have known Greg for a number of years and had the pleasure of working on many cases with him. Greg brings a strong litigation and advocacy background to each of his cases while also providing sound legal advice to his clients. He has achieved great results in matters of all sizes and in many jurisdictions. I would fully recommend Greg Mack and look forward to working with him again in the near future.


    David Snellings Personal injury Attorney
    Relationship: Fellow lawyer in community

  • Stuart A. Lautin

    I endorse this lawyer.


    Stuart Lautin Real estate Attorney
    Relationship: Fellow lawyer in community

Contact info

Mack Law Group, PLLC

1333 W. McDermott Dr.
Suite 190
Allen, TX, 75013


TXEligible To Practice In Texas 199508/17/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Top Contributor 2015 LitigationAvvo2015
Top Contributor 2015 ContractsAvvo2015
Top Contributor 2015 BusinessAvvo2015
Cum LaudeThe University of Texas at Dallas1995
Work experience
TitleCompany nameDuration
PartnerMack Law Group, PLLC2008 - Present
Senior AssociateHartline, Dacus, Barger, Dreyer & Kern2003 - 2008
PartnerVidal & Mack2001 - 2003
AssociateReid & Flowers1997 - 2000
AssociateBickel & Brewer1995 - 1997
Association namePosition nameDuration
Pro Bono College of the State Bar of TexasMember2014 - Present
eLegalMember2014 - Present
Appellate ForumMember2013 - Present
Texas LawyersMember2011 - Present
The EconomistMember2010 - Present
Market Your Law PracticeMember2010 - Present
Personal Injury Attorney NetworkMember2010 - Present
National Association of Small Firms AttorneysMember2008 - Present
Collin County Bar AssociationMember2008 - Present
U.S. District Court for Western District of TexasMember2004 - Present
U.S. District Court for Southern District of TexasMember2004 - Present
U.S. District Court for Northern District of TexasMember1998 - Present
Dallas Bar AssociationMember1995 - Present
State Bar of TexasMember1995 - Present
California Western School of Law Telecomunnications Law JournalStaff Writer, and Editor1993 - 1995
Legal cases
Case nameOutcome
McAllen, et al. v. Forest Oil Corp., et al.Dismissal from the lawsuit.
Stunning Nail Spa, Inc. v. Tran, et al.Settlement
In Re Clements Clinic, PLLCTerminated Litigation in its Tracks
See all legal cases 
Publication nameTitleDate
Allen AmericanBreach of Contract2009
Twin Creeks NewsTrade Secrets2008
School nameMajorDegreeGraduated
California Western School of LawLawJD - Juris Doctor1995
University of Texas System, DallasEconomics & FinanceBA - Bachelor of Arts1992
Speaking engagements
Conference nameTitleDate
What Your Employees Know Can Hurt YouCovenants Not To Compete2008
Top Ten Reasons to Plan EstatesWills and Estate Planning2008