Litigation

Reagan’s oil and gas litigation experience is extensive including successfully obtaining summary dismissal of and defending on appeal an operator’s adverse title claims in which the plaintiff claimed over $100 million in damages and successfully prosecuting claims against an operator that it had improperly deducted costs from a landowner’s royalty.

Reagan has handled several renewable energy disputes ranging from settling a dispute for a confidential amount of money on behalf of a renewable energy developer in which a prospective partner circumvented the developer and cut it out of the deal to successfully resolving a dispute between an oil and gas company and a solar farm.

Transactions

Reagan has negotiated and drafted tens of thousands of acres of water leases and disposal agreements on behalf of both landowners and developers, drafted custom operating agreements between working interest partners on water wells, negotiated and drafted several multi-million dollar purchase and sale agreements for acquisitions of sand producing properties and sand leases, negotiated and drafted dozens of wind and solar leases, and has negotiated several carbon sequestration agreements.

• The Best Lawyers in America (Woodward/White Inc.), 2022-2026
  • Commercial Litigation, 2024-2026
  • Energy Law, 2025-2026
  • Oil and Gas Law, 2022-2026
  • Natural Resources Law, 2026
• Texas Rising Star – Energy & Natural Resources, Super Lawyers by Thomson Reuters, 2018-2026
• Named to “Up-and-Coming 100: Texas Rising Stars” list, Super Lawyers by Thomson Reuters, 2022-2024
• “Top Attorney” List, Energy – Oil & Gas, San Antonio Magazine, 2019
• “Best S.A. Lawyers” List, San Antonio Scene, 2018-2024
  • Energy & Oil & Gas
  • General Litigation
• “Rising Star Lawyers” List, Energy & Oil & Gas, San Antonio Scene, 2020-2022
• Who’s Who in Energy, San Antonio Business Journal, 2015
• National Order of Barristers
• National Champion, ABA National Appellate Advocacy Competition
• Best Advocate (Preliminary Rounds), ABA National Appellate Advocacy Competition

Publications

• Reagan Marble, Peter Hosey, Bobby Biedrzycki, Brandon Durrett, & Brenda Eckert, “Mine: All Mine? Texas Ownership of Produced Water and Its Constituent Parts (Lithium),” 26th Annual Permian Basin Oil & Gas Law Symposium (March 2024)
• Reagan Marble, Peter Hosey, & Bobby Biedrzycki, “Produced Water: The Next “Title” Wave of Litigation, Part I,” San Antonio Lawyer (2024)
• Reagan Marble & Peter Hosey, “Earth, Wind, and Solar – What are renewable energy rights?,” Texas Bar Journal | Vol. 86, No. 10
• Reagan Marble & Peter Hosey, “The Sand Paper: The Life Cycle of Frac Sand” presented at the Advanced Oil, Gas, and Energy Resources Law Course (2022)
• Reagan M. Marble, “Crude awakening: Oil patch lawsuits shift into high gear,” Houston Chronicle (2020)
• Reagan Marble & Peter Hosey, “The Sand Paper: The Anatomy of Acquiring, Divesting, and Leasing Sand” (2020)
• Reagan Marble & Brandon Durrett, Vaquillas Unproven Minerals: Maybe You Didn’t Retain That Acreage, 120 PBLA Takeoff 110 (2016)
• James M. “Marty” Truss & Reagan M. Marble, Texas Oil and Gas Case Law Update, 2 Tex. A&M L. Rev. 353 (2015)
• Reagan M. Marble, The Last Frontier Regulating Factory Farms, 43 Tex. Envtl. L.J. 175 (2013)

Speaking Engagements

• Speaker at the Texas Energy Council’s 35th Annual Symposium (May 2024)
• “Exploring Lithium Extraction from Produced Water,” The Land Department Podcast (November 2023)
• “Element Three: Is Producing Brine to Extract Lithium the New Gold Rush?,” Texas Tech University (November 2023)
• “To Equity or Not? The Role of Equitable Defenses in Deed Construction Cases,” UT Law’s Ernest E. Smith Oil, Gas and Mineral Law Institute (April 2023)
• “Interpreting Deeds and Oil & Gas Leases: A Review of Canons of Construction,” HAPL Technical Educational Workshop (April 2023)
• “Produced Water: The Next ‘Title’ Wave of Litigation,” Jackson Walker’s Hot Topics in Oilfield Produced Water” Webinar (July 2022)
• “Produced Water: The Next ‘Title’ Wave of Oil and Gas Litigation,” UT Law’s Ernest E. Smith Oil, Gas and Mineral Law Institute (April 2022)
• “Earth, Wind & Solar,” State Bar of Texas Oil, Gas & Energy Resources Law Section’s Oil & Gas Dispute Seminar (January 2021)
• “A Legal and Ethical Checklist For Mineral Buyers, Lease Brokers, and Their Lawyers,” HAPL Technical Educational Workshop (April 2021)
• “What the Uptick in Litigation Means for Oil & Gas Producers and Land Owners,” Jackson Walker Fast Takes Podcast (May 2020)
  
• “The Sand Paper: The Anatomy of Acquiring, Divesting, and Leasing Sand,” UT Law’s Ernest E. Smith Oil, Gas and Mineral Law Institute (March 2020)
• “Oil and Gas Case Law Update,” Natural Resources Section CLE, San Antonio Bar Association (February 2020)
• “The Sand Paper: The Anatomy of Acquiring, Divesting, and Leasing Sand” Oil, Gas & Mineral Law Section of the Austin Bar Association Luncheon (October 2019)
• “Recent Trends in Oil & Gas Litigation” (February 2019)
• “Case Law Update,” Permian Basin Landmen’s Association Education Seminar, Midland, Texas (April 2018)
• “Case Law Update,” San Antonio Association of Professional Landmen 29th Annual Mid-Winter Seminar, San Antonio, Texas (January 2018)
• “Oil and Gas Operations and Land Contamination,” 35th Annual Advanced Oil, Gas and Energy Resource Law Course, Houston, Texas (September 2017)
• “Case Law Update,” Houston Association of Professional Landmen, Houston, Texas (March 2017)
• “Case Law Update,” Austin Professional Landmen’s Association, Austin, Texas (March 2017)

In the News

• “The Great Lithium Rush: Oil and Gas Companies Turn Prospectors,” Hart Energy (December 2023)
• “Critical Minerals Investor Foresees Tumultuous Road,” Energy Intelligence (October 2024)
• “Former House Speaker Relentless in Ending Oil & Gas Bad Faith Washouts,” Texas Lawyer (March 2023)
• “Full-Time At The Office More Popular With Lawyers In Texas,” Law360 (January 2022)
• “Oil companies prepare to defend drilling rights — or rights not to — in court,” San Antonio Business Journal (May 2020)
• “How Will the Shale Litigation Boom Affect Your Operations?,” Hart Energy (April 2020)
• “Eagle Ford 2021: What happens to South Texas when oil well flow flattens?” San Antonio Business Journal (February 2019)

• Young Professionals in Energy – San Antonio, Board Member
• Landman and Lawyers Clays Shoot, Board Member
• State Bar of Texas
  • Oil, Gas & Energy Resources Law Section
  • Litigation Section
• San Antonio Bar Association
  • Natural Resources Section
• San Antonio Young Lawyers Association
• American Association of Professional Landmen
• San Antonio Association of Professional Landmen
• Shearrer Hills Baptist Church, Member

Jackson Walker Congratulates 2026 Texas Super Lawyers and Rising Stars

Jackson Walker is pleased to announce that Thomson Reuters’ Super Lawyers has named 74 attorneys to the Texas Super Lawyers list and 56 attorneys to the Texas Rising Stars list for 2026.

Attorney News • February 26, 2026

Jackson Walker Congratulates 2025 Texas Super Lawyers and Rising Stars

Jackson Walker is pleased to announce the recognition of 75 attorneys by Thomson Reuters’ Super Lawyers in the 2025 “Texas Super Lawyers” list, as well as 66 attorneys as “Texas Rising Stars” for 2025. Each year, less than 5% of attorneys are selected to Super Lawyers and 2.5% to Rising Stars. Selection is based off of peer nominations that are then reviewed by a research team. Each nominee is evaluated on his or her professional accomplishments, peer recognition, and community involvement.

Attorney News • September 18, 2025

‘The Best Lawyers in America’ Features 350 Jackson Walker Attorneys in 2026 Edition, Including 10 “Lawyers of the Year” and 106 “Ones to Watch”

The Best Lawyers in America, a widely regarded guide to legal excellence, has recognized 350 Jackson Walker attorneys across 87 specialty practice areas in its 2026 edition, including 10 Lawyers of the Year and 106 Ones to Watch.

Attorney News • August 21, 2025

Reagan Marble Named to San Antonio Business Journal’s 2025 Class of “40 Under 40” Honorees

Jackson Walker congratulates Reagan Marble on his inclusion in the San Antonio Business Journal’s 2025 class of “40 Under 40” honorees. This accolade recognizes young professionals under the age of 40 who are making remarkable contributions to the San Antonio community.

Attorney News • February 4, 2025

Reagan Marble Quoted in ‘Energy Intelligence’ About Critical Minerals Investments

Jackson Walker partner Reagan M. Marble was featured in Energy Intelligence, discussing the growing demand for critical minerals investments.

Mentions • October 10, 2024

‘The Best Lawyers in America’ Features 306 Jackson Walker Attorneys in 2025 Edition, Including 9 “Lawyers of the Year” and 75 “Ones to Watch”

The Best Lawyers in America has recognized 306 Jackson Walker attorneys across 81 specialty practice areas in its 2025 edition, including 9 Lawyers of the Year and 75 Ones to Watch. In this year’s guide, Jackson Walker saw the largest number of attorneys in the areas of Commercial Litigation (75 attorneys) and Real Estate Law (55 attorneys) and the addition of 27 attorneys as Best Lawyers.

Attorney News • August 15, 2024

Five Jackson Walker Attorneys Named to Texas Rising Stars “Up-and-Coming 100” List

The “Up-and-Coming 100” list recognizes outstanding attorneys who have attained a high degree of peer recognition and professional achievement, and selection is based on who received the highest point totals during the patented multiphase process used to identify the “Texas Rising Stars” of 2024.

Attorney News • March 21, 2024

Jackson Walker Congratulates 2024 Texas Rising Stars

Each year, Super Lawyers recognizes only 5% of Texas attorneys who either are 40 years of age or younger or have been in practice for 10 years or less as “Rising Stars.”

Attorney News • March 21, 2024

Produced Water: The Next “Title” Wave of Litigation (PART I) l San Antonio Lawyer

This article published by San Antonio Lawyer examines: (1) what produced water is; (2) the recent legislation surrounding produced water (specifically HB 2767 and HB 3246); (3) the present litigation landscape; and (4) the impending constitutional fight.

By Robert M. Biedrzycki, Peter E. Hosey, and Reagan M. Marble

Insights • January 17, 2024

‘Hart Energy’ Quotes Reagan Marble on Lithium Extraction in Texas

With energy companies in northeast Texas showing interest in pursuing lithium, Reagan Marble shared insight with Hart Energy about the legal questions surrounding lithium ownership.

Mentions • December 18, 2023

Earth, Wind, and Solar: What Are Renewable Energy Rights?

In an article contributed to Texas Bar Journal, Peter Hosey and Reagan Marble shared insight regarding real property rights, recent case law, what Texas lawmakers and courts have done to impact renewable energy.

Insights • November 2, 2023

‘Scene in S.A.’ Recognizes Jackson Walker Attorneys in 2023 “Best S.A. Lawyers” List

Jackson Walker congratulates the 44 practicing attorneys in the San Antonio office who were included in Scene in S.A.’s 2023 “Best S.A. Lawyers” list. In its 19th year, the “Best S.A. Lawyers” list presents attorneys across 80 distinct practice areas who were nominated by fellow licensed, practicing attorneys of Bexar County.

Attorney News • September 18, 2023

JW Diversity & Inclusion Newsletter – August 2023

View Jackson Walker’s August 2023 Diversity & Inclusion Newsletter, Perspectives.

Newsletters • August 24, 2023

‘The Best Lawyers in America’ Honors 287 Jackson Walker Attorneys in 2024 Edition, Including 12 “Lawyers of the Year” and 80 “Ones to Watch”

The Best Lawyers in America has recognized 287 Jackson Walker attorneys across 5 offices and 82 specialty practice areas in its 2024 edition, including 12 Lawyers of the Year and 80 Ones to Watch. In this year’s guide, Jackson Walker saw the largest number of attorneys in the areas of Commercial Litigation (66 attorneys) and Real Estate Law (60 attorneys) and the addition of 35 attorneys as Best Lawyers.

Attorney News • August 17, 2023

Reagan Marble and Joe Regan to Present on Deed Construction Cases and Infrastructure Projects at Ernest E. Smith Oil, Gas and Mineral Law Institute

At the 49th Annual Ernest E. Smith Oil, Gas and Mineral Law Institute, Reagan Marble and Joe Regan will present on issues such as the takings of oil and gas infrastructure by government entities, maximizing compensation, and on equitable defenses in deed construction cases.

Speaking Engagements • April 11, 2023

Eight Jackson Walker Attorneys Named Up-and-Coming Texas Rising Stars

Jackson Walker congratulates Chris Bankler, Amanda Crouch, Joshua Flores, Noah Galton, Joel Glover, Reagan Marble, and Zach Zurek on their selection to the “Up-and-Coming 100: 2023 Texas Rising Stars” list. In addition, Amanda and Veronica Polnick were named to the “Up-and-Coming 50: 2023 Women Texas Rising Stars” list.

Attorney News • March 23, 2023

Jackson Walker Congratulates Its 2023 Texas Rising Stars

Jackson Walker is pleased to announce the selection of 63 attorneys to Thomson Reuters’ 2023 “Super Lawyers – Rising Stars” list, which recognizes only 5% of Texas attorneys who either are 40 years of age or younger or have been in practice for 10 years or less.

Attorney News • March 23, 2023

‘Scene in S.A.’ Recognizes Jackson Walker Attorneys in 2022 “Best S.A. Lawyers” List

Jackson Walker congratulates the 42 practicing attorneys in the San Antonio office who were included in Scene in S.A.’s 2022 “Best S.A. Lawyers” list.

Attorney News • September 6, 2022

‘The Best Lawyers in America’ Honors 214 Jackson Walker Attorneys in 2023 Edition, Including 11 “Lawyers of the Year” and 41 “Ones to Watch”

The Best Lawyers in America has recognized 214 Jackson Walker attorneys across 6 offices and 79 specialty practice areas in its 2023 edition, including 11 Lawyers of the Year and 41 Ones to Watch. Best Lawyers listings are based on an exhaustive peer review survey of thousands of attorneys who vote on the legal abilities of others in their practice areas.

Attorney News • August 18, 2022

Join Jackson Walker for “Hot Topics in Oilfield Produced Water” Webinar

Wednesday, July 27, 2022 | 12 p.m. to 1 p.m. CT

Join Patrick Knapp, Reagan Marble, Ben Rhem, and Taylor Holcomb for this upcoming webinar as they provide an overview of how the midstream water business is among the fastest-growing segments of the oil and gas industry.

Webinars • July 27, 2022

Seven Jackson Walker Litigators Named to “Up-and-Coming 100: 2022 Texas Rising Stars” List

Jackson Walker proudly announces the selection of Chris Bankler, Amanda Crouch, Josh Flores, Noah Galton, Joel Glover, Reagan Marble, and David Schlottman to the “Up-and-Coming 100: 2022 Texas Rising Stars” list, with Amanda recognized among the list of the top 50 highest-rated women.

Attorney News • March 22, 2022

Jackson Walker Congratulates Its 2022 Texas Rising Stars

Jackson Walker is pleased to announce the selection of 51 attorneys to Thomson Reuters’ 2022 “Super Lawyers – Rising Stars” list, which recognizes only 2.5% of Texas attorneys who either are 40 years of age or younger or have been in practice for 10 years or less.

Attorney News • March 22, 2022

Jackson Walker Announces Largest Class of Newly Elected Partners to Date

Jackson Walker is pleased to announce the election of 14 attorneys to the Firm’s partnership on Friday, February 11, 2022. In addition to electing 14 new partners, the Firm also congratulates Bart Cicuto, Noah Speck, and Austin Thomas on their promotion from associates to senior counsel.

Attorney News • February 11, 2022

‘Scene in S.A.’ Recognizes 12 Jackson Walker Attorneys Among 2022 “Rising Star Lawyers” List

To be selected for inclusion in the “Rising Star Lawyers” list, junior attorneys with 10 or fewer years in practice must be nominated by senior attorneys who have at least 15 years of experience practicing law.

Attorney News • January 25, 2022

‘The Best Lawyers in America’ Honors 178 Jackson Walker Attorneys in 2022 Edition, Including 8 “Lawyers of the Year” and 31 “Ones to Watch”

The Best Lawyers in America has recognized 178 Jackson Walker attorneys across 6 offices and 67 specialty practice areas in its 2022 edition, including 8 Lawyers of the Year and 31 Ones to Watch. Best Lawyers listings are based on an exhaustive peer review survey of thousands of attorneys who vote on the legal abilities of others in their practice areas.

Attorney News • August 19, 2021

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