Counsel you can trust.

Macdonald Devin is a Dallas, Texas based law firm. Since 1987, our attorneys have represented local, regional, national and international clients across numerous industries in the following practice areas: Appellate, Architects and Engineers, Aviation, Business Litigation, Commercial/Transactional, Construction, Director and Officers Liability, Employment and Labor, Food, Drug and Medical Device, Health Law, Hospitality, Insurance Defense, Neutraceutical, Nursing Home and Long Term Care, Pharmaceutical, Premises Liability, Products Liability, Professional Liability, Toxic Tort and Environmental, and Transportation.

Our lawyers will provide direction and leadership to relentlessly pursue the most expeditious course for our clients to achieve the best possible result.



  • Featured Counsel
    Lanita S. Morgan

    Lanita has a keen attention to detail and an enthusiasm about offering and delivering the best quality service to her clients

    More Arrow-home  
  • Get Started Today.

    Are you seeking direction to a legal dilemma? Can you use some sound counsel? Tell us how we can help you with a legal issue that's got you off course.

News & Events

Jennifer Edgeworth and Wes Davis win summary judgment for structural engineer

Macdonald Devin Attorneys Obtains Appellate Victories in Medical Liability Claims

Jennifer Edgeworth joins as new shareholder in Greg Ziegler’s group

Greg Ziegler, Bill Gardner, and Rebecca Alcantar obtain dismissal for global geotechnical engineering firm in New Mexico

Greg Ziegler hired to defend global structural engineering firm in alleged $10 million construction cost and delay litigation

Greg Ziegler retained as outside general counsel by DFW-area architectural engineering firm

Congratulations to Bill Gardner and Jason Jung: 2016 Rising Stars


Bill Gardner and Jason Jung Selected to Prestigious Rising Stars List


Greg Ziegler is member of State Bar of New Mexico

David Macdonald retained to defend a product defect claim with alleged damages of approximately $17,000,000

David Macdonald retained by Fortune 500 Company defend a wrongful death case

David Macdonald retained to represent medical device manufacturer in series of surgical mesh cases

Macdonald Devin Attorneys Selected as 2015 Super Lawyers

Greg Ziegler selected as consulting counsel in alleged $10 billion oil refinery case


A national professional liability insurance carrier has selected Greg Ziegler to serve as its consulting counsel in an alleged $10 billion oil refinery case.



July 2015


Greg Ziegler and Rebecca Alcantar secure highly defense-favorable settlement for geotechnical engineers

Greg Ziegler selected as speaker for Texas Society of Professional Engineers Conference and 79th Annual Convention

Greg Ziegler selected as lead counsel for architectural engineering firm in $10.5 million delay claim regarding the new El Paso

Greg Ziegler and Dean Siotos earn victory in the Valley for civil engineer

Greg Ziegler and Edward Johnson win jury trial for nursing home company

Greg Ziegler and Bill Gardner win dismissal for architectural engineering firm in $5 million commercial case

Congratulations to new shareholders: Bryan Rutherford, Mark Roberts, and Bill Gardner

Clayton Devin Elected TADC Treasurer for 2014-2015

Clayton Devin Speaks at State Bar of Texas Seminars in Dallas, San Antonio, and Houston

David Macdonald and Jennifer LeBlanc Sustain MSJ for Medical Device Manufacturer

Clayton Devin selected to Planning Committee and Faculty of the SBOT Advanced Personal Injury Seminar

Greg Ziegler wins defense-favorable result for structural engineer

Greg Ziegler wins jury trial for architect in $6 million hotel foundation case

Clayton Devin Speaks at TADC Spring Meeting on Current Trends in Construction Indemnity Issues

Recognizing Excellence: 2014 Rising Stars, Bill Gardner and Jason Jung

Macdonald Devin: A Texas Top Ranked Law Firm