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Haynes and Boone

Ann L. Al-Bahish

Ann L. Al-Bahish



  • Chemical
  • Energy Litigation
  • Energy, Power and Natural Resources
  • Environmental

WSG Practice Industries


Haynes and Boone
Texas, U.S.A.

WSG Leadership

WSG Coronavirus Task Force Group
Ann Al-Bahish litigates environmental andcommercial matters across the country and has tried cases in both state and federal courts, before juries and judges. Her clients have included railroads, energy companies, manufacturers, healthcare entities, and state governments, among others.

As an attorney with a Ph.D., Ann is highly adept in presenting and analyzing expert testimony and evidence, including scientific and economic evidence essential to liability and damages findings in civil cases. Ann’s most recent trial involved a complete defense judgment on a $90 million environmental allocation claim brought against her client in federal district court in Tacoma, Washington. She tried an environmental indemnity dispute before a jury in 2017, striking all claims for profits and achieving damage reductions for her client. Ann has led trial teams and has tried cases in Delaware, New Mexico, Texas and Washington and has additional litigation and appellate experience in California, New Jersey, New York, and Oregon and Vermont. Using her litigation abilities, Ann also has helped her clients prevent and/or mitigate losses and disputes through the negotiation and creation of clear, cohesive documents that aid and promote successful business relationships and allocate risk. Ann strives to responsively provide practical, creative and useful legal advice, and believes in investing her own time to better learn and understand the needs of her clients.

Clients appreciate that Ann not only offers them consistently on-point advice, but that she is also easy to work with, responsive, flexible and down-to-earth, and delivers continually meticulous attention to detail. Ann is dedicated to understanding what her clients need, and then effectively developing the case around those goals.

Bar Admissions

Texas, 1993


Ph.D., 2016, University of Texas Health Science Center Houston
J.D., 1993, Harvard Law School, cum laude, Editor and author, Journal of Law, Medicine and Ethics; Editor and author, Law, Medicine and Health Care
B.A., 1990, Trinity University, magna cum laude
Areas of Practice

Chemical | Energy Litigation | Energy, Power and Natural Resources | Environmental | Environmental Litigation | Litigation


Several States Adopt CISA Guidance Giving “Essential Critical Infrastructure” Exemption for Energy Sector under COVID-19 “Shelter-in-Place”
Haynes and Boone, March 2020

Several state and local governments have issued “shelter in place” orders and undoubtedly more will follow. All have various exemptions for “essential businesses” and many rely on exemptions outlined in the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (“CISA”) guidance on critical infrastructure workers...

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