Mario A. Barrera

Duncan E. Osborne is a partner of Osborne, Helman, Knebel & Scott, LLP. He graduated from the University of Texas Law School (JD, with honors, 1971). His core practice is domestic and international estate planning with an emphasis on asset protection planning. A former adjunct professor of law at The University of Texas School of Law, Mr. Osborne devotes significant energy to lecturing and writing in his practice area as well as helping clients with regard to all aspects of their estate p...

John Gilluly is a Chambers Band 1-ranked attorney who represents leading global and domestic companies, investors and other institutions across a range of industries, and focuses on capital markets transactions, SEC reporting and compliance, mergers and acquisitions, private equity, and corporate governance matters. Chambers recognizes John as a “highly regarded” lawyer for “his active funds practice and his deal focused attitude” and has noted that “peers are en...

Sara M. Burgin is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law, Litigation - Environmental and Water Law. Sara M., who practices law in Austin, Texas, has been recognized since 1997. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sara M. is held by other top lawyers in the same geographic and legal practice area.

Mr. Armbrust practices in the areas of real estate, general business, contracts, environmental, land use, administrative, water and utilities. Mr. Armbrust serves on the Board of Directors of the Central Texas Regional Mobility Authority. He has previously served on the Boards of the Colorado River Foundation, the Greater Austin Economic Development Corporation and the Brackenridge Hospital Development Council. He served on the Board of Directors of the Austin Real Estate Council and was its ...

Keith Maples' 20-year career has been devoted exclusively to Family Law, including litigated divorce, collaborative divorce, custody arrangements and modifications. Mr. Maples has particular expertise in issues related to special needs children and is an experienced mediator and arbitrator in family law matters. He is board certified in Family Law by the Texas Board of Legal Specialization and is a Fellow of the American Academy of Matrimonial Lawyers.

Mark A. Santos is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative / Regulatory Law, Energy Law and Energy Regulatory Law. Mark A., who practices law in Austin, Texas, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark A. is held by other top lawyers in the same geographic and legal practice area.

Katherine Klammer Madianos is a top attorney recognized by Best Lawyers in the practice area(s) of Trademark Law. Katherine Klammer, who practices law in Austin, Texas, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katherine Klammer is held by other top lawyers in the same geographic and legal practice area.

Frank N. Ikard, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Trusts and Estates and Trusts and Estates. Frank N., who practices law in Austin, Texas, has been recognized since 1983. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Frank N. is held by other top lawyers in the same geographic and legal practice area.

Janice Ta is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property, Litigation - Patent and Patent Law. Janice, who practices law in Austin, Texas, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Janice is held by other top lawyers in the same geographic and legal practice area.

Sherri L. Eastley is a top attorney recognized by Best Lawyers in the practice area(s) of Trademark Law. Sherri L., who practices law in Austin, Texas, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sherri L. is held by other top lawyers in the same geographic and legal practice area.