Skip to main content
Mark Anthony Fassold

Mark Anthony Fassold

Practice areas:

Commercial, Intellectual Property, Personal Injury

About Me

Mark A. J. Fassold was born in Rantoul, Illinois. Upon graduating from H. M. King High School, Kingsville, Texas, Mark enlisted into the Texas Army National Guard and later attended Officer Candidate School graduating first in his class as Distinguish Honor Graduate. In 1994 (as the first of his immediate and extended family to attend college), Mark earned his Bachelor of Arts degree in Political Science from Texas A&I University with a perfect 4.0 grade point average earning a Woodrow Wilson Fellowship to attend Harvard’s Kennedy School of Government. In 1996, he earned a Master in Public Policy degree and a scholarship to attend Harvard Law School. In 1999, Mr. Fassold obtained his Juris Doctoris degree from Harvard Law School.

During his five years at Harvard, Mr. Fassold qualified and served as a “statistical expert witness” whose expert opinion was adopted by the court in G.I. Forum v. Texas Education Agency, 87 F.Supp.2d 667 (W.D. Tex. 2000) over the opinions of professors from the University of Texas and the University of Michigan. In that case, Mr. Fassold performed regression analysis establishing that Texas’ high school graduation exam had a disparate impact on ethnic minorities controlling for factors such as socioeconomic status, school quality, curriculum and numerous other factors.

Upon graduation, from 1999 to 2001, Mr. Fassold served as a Briefing Attorney to the Honorable Hayden W. Head, Jr., United States District Court, Southern District of Texas, Corpus Christi, Texas. While a Briefing Attorney, he was given permission to represent, pro bono, a family member who had been sued for negligence. During the trial of that case, his first, Mark obtained a unanimous verdict of no liability in favor of his client in what had been previously described by several attorneys as a sure loss for Mark’s client.

Since 2001, Mr. Fassold worked with the same group of attorneys first at Jenkens & Gilchrist and then Jackson Walker. In February 2008, Mark made partner at Jackson Walker. During his time at these firms, he prosecuted and/or defended hundreds of cases in the areas of complex business litigation, intellectual property litigation, and product liability litigation. As lead attorney, Mr. Fassold has tried and won jury verdicts in state and federal courts. Mark has a national practice and has represented clients before specialized courts such as those at the United States International Trade Commission.


Mark is married to Angela Christina Fassold. Mark and Angie have a son Anthony and a daughter Mia.


Languages Spoken: Spanish

Practice Areas

Licensed since 1999

  1. Commercial: 50%
    14 years, 100 cases
  2. Personal Injury: 25%
    14 years, 500 cases
  3. Intellectual Property: 25%
    8 years, 10 cases

Attorney Endorsements

6 total 

  • Michael S. Waddington

    I endorse Mark. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military Law Attorney
    Relationship: Fellow lawyer in community

  • Karina Cecilia Cantu

    I endorse this lawyer. I've had an opportunity to work with Mark, and found him to be one of the most skilled attorneys I've had the pleasure of working with. He is an outstanding litigator.


    Karina Cantu Business Attorney
    Relationship: Worked together on matter

Contact Info

Watts Guerra LLP

300 Convent St
Suite 100
San Antonio, TX, 78205


TXEligible To Practice In Texas 199905/24/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Best Lawyer in San AntonioScene in SA Magazine2008
Rising StarTexas Super Lawyers2005

Work Experience
TitleCompany NameDuration
PartnerWatts Guerra LLP2009 - Present
PartnerJackson Walker2007 - 2009
AssociateJenkens & Gilchrist2001 - 2007
Briefing AttorneyUnited States District Court Southern District Of Texas1999 - 2001

Association NamePosition NameDuration
American Inns of CourtMemberN/A
Texas Trial Lawyers AssociationMemberN/A
State Bar of Texas, Business Law SectionMemberN/A
San Antonio Bar AssociationMemberN/A
Fifth Circuit Bar AssociationMemberN/A

Legal Cases
Case NameOutcome
Landmark v. Ellerbe Becket, No. 03-07-00673-CV (State District Court, Travis County, Texas, filed 2007)N/A
Helena Chemical Company v. Texell Federal Credit Union,, No. 05-52 (U.S. District Court, Waco Division, 2005)N/A
Sanitarios Lamosa, SA. DE C.V. v. DBHL, Inc., No. 04-2973 (U.S. District Court, Harris County, filed 2004)N/A

See all Legal Cases 

Publication NameTitleDate
San Antonio Construction NewsHow to Get a Manufacturer to Pay your Attorneys’ Fees and Other Costs if You Are Sued2009
Hispanic Journal of Behavioral SciencesDisparate Impact Analyses of TAAS Scores and School Quality2000

School NameMajorDegreeGraduated
Harvard UniversityLawDoctor of Jurisprudence/Juris Doctor (J.D.)1999
Harvard Kennedy School of GovernmentN/AMaster of Public Policy1996
Texas A&M UniversityPolitical ScienceBachelor of Arts1994

Speaking Engagements
Conference NameTitleDate
Advanced Personal Injury Law CourseUse of Technology in the Courtroom2011
Advanced Personal Injury 2011New Approaches to Damages for Juries2011
Watts Guerra Craft LLPContingent Fees for Commercial Cases2009