Gregory Calvin Mack

Gregory Calvin Mack

4.4
Rating: 8.1

Licensed for 30 years

Litigation Lawyer at Plano, TX
Practice Areas: Litigation, Business, Contracts & Agreements, Employment & Labor

5550 Granite Parkway, Suite 150, Plano, TX

About Gregory

Biography

Practice Areas

4

Practice Areas

Litigation 70%

Sophisticated litigation is my primary area of practice. I have 20 years of broad based experience representing many Fortune 500 companies, startups and individuals on both sides of the docket in a variety of matters, including, business law, fraud, DTPA, contracts, product liability, banking, finance, personal injury, bankruptcy, toxic torts and many others.

31 years | 375 cases

70%
Business 10%

I represent businesses and their officers, shareholder and directors in a variety of litigation matters.

31 years | 150 cases

10%
Contracts and Agreements 10%

Most of the business litigation cases I am involved with have a contract as a component of the legal action.

31 years | 125 cases

10%
Employment and Labor 10%

I represent both claimants and employers in labor and employment litigation matters.

27 years | 33 cases

10%

Fees and Rates

Cost

Retainer

Always


Payment Methods

  • Cash
  • Check
  • Credit Card

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Licenses

Licensed in Texas for 30 years

State: Texas

Acquired: 1995

Not Eligible to Practice - Administrative Suspension

No misconduct found

Location

Mack Law Group, PLLC

5550 Granite Parkway, Suite 150, Plano, TX, 75024

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Gregory Calvin Mack's Reviews

Avvo Review Score

4.4 /5.0

7 Client Reviews

5 star (6)
4 star (0)
3 star (0)
2 star (0)
1 star (1)

Posted by anonymous | August 18, 2022 | Consulted Attorney

This review is from a potential client who consulted with this attorney.

?

this is how he started his response... I do not understand your question sufficient to provide any sort of reasonable response then he goes on to inisult the asker...

Posted by Sherry | July 2, 2015

Mr. Mack exceeds our expectations.

I retained Gregory Mack as counsel on a current case. He has exceeded my expectations by providing a service of diligence, on my behalf, to maintain an exceptional standard of both knowledge and integrity. His hard work and professionalism makes him a true credit to his profession.

Posted by Phung | June 9, 2015

Best Business Law Attorney Ever, Exceptional Service, Outstanding Litigator, Great Trial Lawyer.

Partnership dispute that initially involved me being locked out of my business by a Temporary Restraining Order that the other side had a Judge issue against me. Once I retained Greg, he immediately filed a motion to dissolve the Temporary Restraining Order which was granted by the Judge. I regaine...d control of my business within a matter of days after Greg went to work on my case. Afterwards, Mack Law Group, PLLC continued to aggressively litigate the case on my behalf, won every court hearing we had before the Judge and ultimately got me a result that I believe was outstanding. Greg is the best lawyer I have ever known/used/hired/retained (you can put a period here or write because ___???). I strongly encourage anyone who has a business law matter, a legal dispute where you need a real trial lawyer on your side, or any legal matter where you want an aggressive litigation attorney who will immediately impact your case, to call Greg at Mack Law Group, PLLC. You will not be disappointed

Posted by Laura | June 3, 2015

Best Attorney I've Ever Used!

I fell victim to a breach of privacy with a financial institution. Time was of the essence, and Greg took swift action on my behalf. He is the most responsive, attentive attorney that I have ever had the pleasure of knowing. He kept me informed the entire time and always responded quickly to my qu...estions. He is very assertive all while being extremely professional at the same time. He listened and then took action. From the minute I started working with him, I knew I made the right decision. Greg is the best!

Posted by Jon | February 3, 2015 | Consulted Attorney

This review is from a potential client who consulted with this attorney.

Mr. Mack is an excellent lawyer

I recently sought out Mr. Mack's counsel on a TX matter. He provided stellar counsel. He is smart and insightful and he helped me understand a nuance of TX law. Mr. Mack is highly recommended.

See All Client Reviews

Gregory Calvin Mack's Lawyer Endorsements

Endorse Gregory
David Scott Snellings headshot
David Snellings

Personal injury lawyer | Oct 15

Relationship: Fellow lawyer in community

"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."

Stuart A. Lautin headshot
Stuart Lautin

Contracts and agreements lawyer | Jan 28

Relationship: Fellow lawyer in community

"I endorse this lawyer."

J. Gregory Whitten headshot
J. Whitten

Unknown lawyer | Apr 16

Relationship: Fellow lawyer in community

"I have known Greg Mack as an attorney for almost 20 years, including working together in the same firms in years past. I think very highly of Greg as an attorney and as a person. He is a razor sharp litigator and trial attorney. If you are considering an attorney with Greg's experience and skills, you should definitely interview him before you hire someone else."

Walter Rudolph Hnot, III headshot
Walter Hnot,

Business lawyer | Mar 21

Relationship: Fellow lawyer in community

"Gregory is an excellent attorney committed to providing the highest quality representation to clients. I endorse this attorney without reservation."

Mark V. Clay headshot
Mark Clay

Business lawyer | Aug 18

Relationship: Fellow lawyer in community

"I highly endorse Mr. Mack. Very knowledgeable and caring attorney who achieves great results in representing clients! I want all people to contact him for help."

John Fisher headshot
John Fisher

Business lawyer | Jul 04

Relationship: Fellow lawyer in community

"I endorse this lawyer. Intelligent and compassionate with superior communication skills."

Kevin Curtis Crayon II headshot
Kevin Crayon

Litigation lawyer | May 03

Relationship: Fellow lawyer in community

"I endorse this lawyer, especially for litigation. Clients trust Mr. Mack's expertise and client-relations."

Samuel Lynndon Morgan headshot
Samuel Morgan

Business lawyer | May 01

Relationship: Fellow lawyer in community

"I endorse this lawyer. Attorney Mack is a Top Notch Attorney with the respect of the legal community."

Jonathan Pierre Lacour headshot
Jonathan Lacour

Business lawyer | Apr 28

Relationship: Fellow lawyer in community

"Keen attention to detail with exceptional client service. I endorse this lawyer."

Samera I. Habib headshot
Samera Habib

Litigation lawyer | Feb 21

Relationship: Other

"I endorse this lawyer."

Illon Ross Fish headshot
Illon Fish

Business lawyer | Feb 14

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Shawn B Alexander headshot
Shawn Alexander

Business lawyer | Feb 09

Relationship: Fellow lawyer in community

"I endorse this Mr. Mack. You can tell from his responses and clear wisdom that he has the drive and knowledge necessary to be a fine advocate."

Dorinda Jo Myers headshot
Dorinda Myers

Litigation lawyer | Feb 09

Relationship: Fellow lawyer in community

"When you find yourself in need of a litigation attorney it is important to retain an experienced, knowledgeable and competent lawyer. Mr. Mack is well-respected in the legal community for just those reasons."

John Michael Phillips headshot
John Phillips

Unknown lawyer | Feb 08

Relationship: Fellow lawyer in community

"I endorse Mr. Mack. You can tell from his thorough responses and sage wisdom that he has the passion and compassion necessary to be a fine advocate."

Jennifer Falk Kashar headshot
Jennifer Kashar

Unknown lawyer | Feb 04

Relationship: Other

"Gregory Mack is a detail-oriented, diligent lawyer. I highly recommend him for your business litigation needs."

Jon Friedman headshot
Jon Friedman

Litigation lawyer | Jan 31

Relationship: Other

"Mr. Mack is an accomplished and zealous advocate for his clients. He is a very smart lawyer and he has street smarts which combine to assist him in finding sensible solutions for his client's needs. I highly recommend Mr. Mack."

Robert Lawrence Cohen headshot
Robert Cohen

Business lawyer | Jan 29

Relationship: Fellow lawyer in community

"I endorse this lawyer. He really knows his stuff."

Charles Christopher Adkins headshot
Charles Adkins

Litigation lawyer | Jan 28

Relationship: Fellow lawyer in community

"Gregory Mack is well known as an extremely talented litigation attorney. He is fair, gives his clients honest expectations, and fights to win their cases. I endorse this lawyer."

Dustin Tyler Gaines headshot
Dustin Gaines

Corporate and incorporation lawyer | Jan 28

Relationship: Fellow lawyer in community

"Mr. Mack's advice is well reasoned, extremely practical, and he has an excellent track record of experience. I endorse this lawyer."

Forrest Nolan Welmaker Jr. headshot
Forrest Welmaker

Personal injury lawyer | Jan 28

Relationship: Worked together on matter

"I have worked with Gregory and consider him an excellent lawyer. If you have a legal question in and around Allen, Texas, give him a call."

View All Endorsements
J. Gregory Whitten headshot
J. Whitten

Litigation lawyer

Mark V. Clay headshot
Mark Clay

Immigration lawyer

Kevin Curtis Crayon II headshot
Kevin Crayon

Criminal defense lawyer

Samuel Lynndon Morgan headshot
Samuel Morgan

Criminal defense lawyer

Jonathan Pierre Lacour headshot
Jonathan Lacour

Business lawyer

Curtis W. Harrison II headshot
Curtis Harrison

Divorce and separation lawyer

Samera I. Habib headshot
Samera Habib

Divorce and separation lawyer

Kay L. Van Wey headshot
Kay Van Wey

Personal injury lawyer

Illon Ross Fish headshot
Illon Fish

Criminal defense lawyer

Dorinda Jo Myers headshot
Dorinda Myers

Criminal defense lawyer

John Michael Phillips headshot
John Phillips

Personal injury lawyer

Shawn B Alexander headshot
Shawn Alexander

Contracts and agreements lawyer

Joshua Silber headshot
Joshua Silber

Personal injury lawyer

Alexander Gregory Knapp headshot
Alexander Knapp

Personal injury lawyer

Jennifer Falk Kashar headshot
Jennifer Kashar

Personal injury lawyer

Shawn Edward Tuma headshot
Shawn Tuma

Computer fraud lawyer

Jon Friedman headshot
Jon Friedman

Medical malpractice lawyer

Thomas John Baker headshot
Thomas Baker

Family lawyer

Bruce Clement headshot
Bruce Clement

Family lawyer

Robert Lawrence Cohen headshot
Robert Cohen

Probate lawyer

Experience

Rating:  8.1 (Excellent)

Honors

2015

Top Contributor 2015 Litigation, Avvo

2015

Top Contributor 2015 Contracts, Avvo

2015

Top Contributor 2015 Business, Avvo

1995

Cum Laude, The University of Texas at Dallas

Work Experience

2008 - Present

Partner, Mack Law Group, PLLC

2003 - 2008

Senior Associate, Hartline, Dacus, Barger, Dreyer & Kern

2001 - 2003

Partner, Vidal & Mack

1997 - 2000

Associate, Reid & Flowers

1995 - 1997

Associate, Bickel & Brewer

Associations

2014 - Present

Pro Bono College of the State Bar of Texas

Member

2014 - Present

eLegal

Member

2013 - Present

Appellate Forum

Member

2011 - Present

Texas Lawyers

Member

2010 - Present

Personal Injury Attorney Network

Member

2010 - Present

Market Your Law Practice

Member

2010 - Present

The Economist

Member

2008 - Present

Collin County Bar Association

Member

2008 - Present

National Association of Small Firms Attorneys

Member

2004 - Present

U.S. District Court for Southern District of Texas

Member

2004 - Present

U.S. District Court for Western District of Texas

Member

1998 - Present

U.S. District Court for Northern District of Texas

Member

1995 - Present

Dallas Bar Association

Member

1995 - Present

State Bar of Texas

Member

1993 - 1995

California Western School of Law Telecomunnications Law Journal

Staff Writer, and Editor

Sample of Legal Cases

Stunning Nail Spa, Inc. v. Tran, et al.

Settlement

In Re Estate of R. L. McMillan

Settlement

Carole King v. Denny's, Inc. and Denar Restaraunts, LLC

Settlement

Ultimate Health Resources, LLC v. Brinson Benefits, Inc.

Settlement

In Re Clements Clinic, PLLC

Terminated Litigation in its Tracks

Ramona Roise v. McKinney Open MRI, et al.

Dismissed from Lawsuit after Jury Trial

McAllen, et al. v. Forest Oil Corp., et al.

Dismissal from the lawsuit.

See More Legal Cases

Education

1995

California Western School of Law

JD - Juris Doctor

1992

The University of Texas at Dallas

BA - Bachelor of Arts, cum laude

Speaking Engagements

2008

What Your Employees Know Can Hurt You

Covenants Not To Compete

2008

Top Ten Reasons to Plan Estates

Wills and Estate Planning

Publications

2009

Allen American Breach of Contract

2008

Twin Creeks News Trade Secrets

Languages

English

Spanish

Activity

Avvo Rating

Our Rating is calculated using information the lawyer has included on their profile in addition to the information we collect from state bar associations and other organizations that license legal professionals. Attorneys who claim their profiles and provide Avvo with more information tend to have a higher rating than those who do not.

What determines Avvo Rating?
  • Experience & background Years licensed, work experience, education
  • Legal community recognition Peer endorsements, associations, awards
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Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution