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Margaret I. Lyle
Of Counsel


(T) +1.214.969.4894
(F) +1.214.969.5100


  • The University of Texas at Austin (J.D. with high honors 1984; Order of the Coif; Grand Chancellor; Articles Editor, Texas Law Review); Southern Methodist University (B.A. and B.S. summa cum laude 1981; Phi Beta Kappa Orator)

Bar Admissions

  • Texas; U.S. Courts of Appeals for the Fifth, Eighth, Ninth, and Federal Circuits; and U.S. District Courts for the Eastern and Southern Districts of Texas


  • Law Clerk to Judge Thomas Gibbs Gee, U.S. Court of Appeals, Fifth Circuit (1984-1985)

Margaret Lyle represents businesses in their most significant complex litigation and appeals, defending class actions, data privacy, contract, health care, patent, and internet-marketing claims.

For more than 20 years, Margaret has successfully defended dozens of class actions brought under the Fair Credit Reporting Act, the Magnuson-Moss Warranty Act, the Driver's Privacy Protection Act, the Credit Repair Organizations Act, RICO, and state consumer statutes, as well as class claims for breach of warranty, unjust enrichment, fraud, and product liability. Margaret has defended Computer Sciences Corporation in class litigation over its insurance software, Interstate Battery in class warranty litigation, the Washington Division of URS Corp. in class litigation over New Orleans flooding following Hurricane Katrina, and Experian in data privacy and consumer class actions.

Margaret has represented SAS, Sercel, Experian, and other industry leaders in state and federal appeals over statutory construction, injunctions, contract interpretation, patent claims and damages, federal jurisdiction, and constitutional protections. She represented R.J. Reynolds Tobacco Company in cases of first impression in Nevada and Oregon, where the states' highest courts rejected a medical monitoring tort.

Margaret co-chairs the ABA Woman Advocate Committee. She has served as a programming chair for the ABA Class Action and Derivative Suits Committee, as editor-in-chief of The Woman Advocate, and as a practitioner contributor to Black's Law Dictionary. A Dallas Bar Foundation Fellow and a member of Attorneys Serving the Community, she was a founding member of the Texas Law Parents Leadership Association and a founding director of Marshall Lawyers Care.

Margaret Lyle