Ryan Clinton

Ryan Clinton is a civil appellate attorney and leads the firm’s Texas issues and appeals practice. A former Assistant Solicitor General in the Texas Attorney General’s Office, Ryan has more than two decades of Texas litigation experience in state and federal court. He has delivered dozens of trial court and appellate arguments, numbering in the double-digits before the Supreme Court of Texas. He is also Board Certified in Civil Appellate Law by the Texas Board of Legal Specialization.

Supreme Court of Texas

• Mabee v. HR Martin County Landfill LLC, No. 25-0077 in the Supreme Court of Texas (petition for review denied Dec. 19, 2025) (represented Respondent)

Experience prior to joining Hunton:

• Roxo Energy Company, LLC v. Baxsto, LLC, No. 23-0564 in the Supreme Court of Texas (opinion issued May 5, 2025) (represented Petitioner) (court reversed judgment and rendered judgment that Respondent take nothing)
• Cactus Water Services, LLC v. COG Operating, LLC, No. 23-0676 in the Supreme Court of Texas (opinion issued March 18, 2025) (represented Respondent at trial and as co-counsel on appeal) (court affirmed judgment for Respondent)
• Delaware Basin Resources LLC v. Tier 1 Resources Partners, No. 21-0939 in the Supreme Court of Texas (petition dismissed on Dec. 2, 2022, due to settlement) (represented Petitioner)
• Posse Energy, Ltd. v. Parsley Energy, LP, No. 21-0754 in the Supreme Court of Texas (petition for review denied Feb. 18, 2022) (represented Respondent)
• Nettye Engler Energy, L.P. v. BlueStone Natural Resources II, LLC, No. 20-0639 in the Supreme Court of Texas (opinion issued Feb. 4, 2022) (represented Respondent) (court affirmed judgment for Respondent)
• Energen Resources Corp. v. Wallace, No. 20-0451 in the Supreme Court of Texas (opinion issued Mar. 11, 2022) (represented Petitioner) (court reversed judgment and rendered judgment that Respondent take nothing)
• Evans Resources, L.P. v. Diamondback E&P, LLC, No. 20-0648 in the Supreme Court of Texas (petition for review denied Mar. 5, 2021) (represented Respondent)
• Concho Resources, Inc. v. Marsha Ellison, No. 19-0233 in the Supreme Court of Texas (filed amicus brief for Ganador Operating, LLC in support of Petitioner on June 24, 2019) (court reversed judgment of court of appeals)
• In re Travis Central Appraisal District, No. 18-0846 in the Supreme Court of Texas (petition for writ of mandamus denied Jan. 25, 2019) (represented real party in interest)
• Double Eagle Development, LLC v. Apache Deepwater, No. 17-0756 in the Supreme Court of Texas (petition for review denied Dec. 14, 2018) (represented Respondent)
• XOG Operating, LLC v. Chesapeake Exploration Ltd. P’ship, No. 15-0935 in the Supreme Court of Texas (opinion issued Apr. 13, 2018) (represented Respondent) (court affirmed judgment for Respondent)
• Endeavor Energy Resources, L.P. v. Discovery Operating, Inc., No. 15-0155 in the Supreme Court of Texas (opinion issued Apr. 13, 2018) (represented Respondent) (court affirmed judgment for Respondent)
• Occidental Chemical Corporation v. Jenkins, No. 13-0961 in the Supreme Court of Texas (opinion issued Jan. 8, 2016) (represented Petitioner) (court reversed and rendered judgment that Respondent take nothing)
• Tenaska Energy, Inc. v. Ponderosa Pine Energy, LLC, No. 12-0789 in the Supreme Court of Texas (opinion issued May 23, 3014) (represented Petitioner) (court reversed judgment for Respondent)
• Manchester Tank & Equipment Co. v. Engineered Controls International, Inc., No. 10-0095 in the Supreme Court of Texas (petition for review denied Aug. 27, 2010) (represented Respondent)
• Zachry Construction Corp. v. Texas A&M University, No. 07-1050 in the Supreme Court of Texas (petition dismissed as improvidently granted Nov. 20, 2009) (represented Respondent)
• Texas Dept. of Transportation v. Garcia, No. 07-1030 in the Supreme Court of Texas (opinion issued Aug. 28, 2009) (represented Petitioner) (court reversed and remanded)
• Texas Dept. of Health & Human Services v. Okoli, No. 07-0642 in the Supreme Court of Texas (opinion issued Aug. 28, 2009) (represented Petitioner) (court reversed and remanded)
• State of Texas v. Lueck, No. 06-1034 in the Supreme Court of Texas (opinion issued June 26, 2009) (represented Petitioner) (court reversed judgment for Respondent and dismissed claims against State for lack of jurisdiction)
• In re Waller Independent School Dist., No. 08-0079 in the Supreme Court of Texas (petition for writ of mandamus denied Feb. 22, 2008) (represented real party in interest)
• Texas Parks & Wildlife Dept. v. E.E. Lowrey Realty, Ltd., No. 05-0157 in the Supreme Court of Texas (opinion issued Sept. 28, 2007) (represented Petitioner) (court reversed and rendered judgment that Appellees take nothing)
• McAllister v. State of Texas, No. 04-1116 in the Supreme Court of Texas (petition for review denied December 22, 2006) (represented Respondent)
• In re The Honorable Errlinda Castillo, No. 06-0314 in the Supreme Court of Texas (petition for writ of mandamus denied Aug. 31, 2006) (represented real party in interest)
• In re The Commitment of Michael Fisher, No. 04-0112 in the Supreme Court of Texas (opinion issued May 20, 2005) (represented Petitioner) (court reversed and rendered judgment for Petitioner)
• Taylor v. The Anatomical Board of the State of Texas, No. 04-1054 in the Supreme Court of Texas (petition for review denied Jan. 21, 2005) (represented Respondent)
• University of Texas Southwestern Medical Center at Dallas v. Loutzenhiser, No. 02-0894 in the Supreme Court of Texas (opinion issued July 9, 2004) (represented Petitioner) (affirming judgment of lack of jurisdiction but holding that Petitioner’s motion for summary judgment should have been granted)
• Beasley v. Molett, No. 03-0099 in the Supreme Court of Texas (petition for review denied Jan. 16, 2004) (represented Respondent)

Texas Appellate Courts

• Kreines v. ES3 Minerals, LLC, No. 15-25-00027-CV in the Fifteenth Court of Appeals at Austin (opinion issued Dec. 4, 2025) (represented Appellee) (court modified and affirmed temporary injunction and remanded for redetermination of bond)

Experience prior to joining Hunton:

• Evans Resources, L.P. v. Diamondback E&P, LLC, No. 11-24-00107-CV in the Eleventh Court of Appeals at Eastland (opinion issued Oct. 23, 2025) (represented Appellee) (court affirmed judgment that Appellant take nothing)
• In re Bexar Appraisal District, No. 04-24-00158-CV in the Fourth Court of Appeals at San Antonio (petition for writ of mandamus denied Sept. 25, 2024) (represented real party in interest)
• Herman Lindley Trust v. CCATT, No.13-22-00025-CV in the Thirteenth Court of Appeals at Corpus Christi (dismissed due to settlement Dec. 15, 2022) (represented Appellant)
• Ogle v. O’Gan, No. 03-21-00270-CV in the Third Court of Appeals at Austin (opinion issued Aug. 10, 2022) (represented Appellee) (court affirmed judgment for Appellee)
• Posse Energy, Ltd. v. Parsley Energy, LP, No. 08-20-00610-CV in the Eighth Court of Appeals at El Paso (opinion issued July 26, 2021) (represented Appellee) (court affirmed judgment for Appellee)
• Trinh v. Central River Healthcare Group, P.L.L.C., No. 03-19-00393-CV in the Third Court of Appeals at Austin (opinion issued June 9, 2021) (represented Appellee) (court affirmed judgment that Appellant take nothing)
• Jones v. Energen Resources Corp., No. 07-18-00132-CV in the Seventh Court of Appeals at Amarillo (opinion issued Jan. 29, 2020) (represented Appellee) (court affirmed judgment that Appellant take nothing)
• In re Catherine Tower, LLC, No. 03-17-00735-CV in the Third Court of Appeals at Austin (opinion issued June 20, 2018) (represented Petitioner) (court reversed trial court discovery order)
• Tex. State Bd. of Veterinary Med. Examiners v. Jefferson, No. 03-14-00774-CV (opinion issued Feb. 26, 2016) (represented Appellee) (court affirmed judgment for Appellee and dismissed cross appeal as moot)
• Clayton Williams Energy, Inc. v. BMT O&G TX, L.P., No. 08-14-00133-CV in the Eighth Court of Appeals at El Paso (opinion issued July 8, 2015) (represented Appellee) (court reversed judgment and rendered judgment that Appellee take nothing)
• Community Bank of Raymore v. Chesapeake Exploration, L.L.C., No. 08-12-00025-CV in the Eighth Court of Appeals at El Paso (opinion issued Nov. 6, 2013) (represented Appellee) (court affirmed judgment for Appellee)
• Chesapeake Exploration, L.L.C. v. BNW Property Co., No. 08-11-00239-CV in the Eighth Court of Appeals at El Paso (opinion issued Nov. 30, 2012) (represented Appellant) (court reversed judgment and rendered judgment that Appellee take nothing)
• Anadarko Petroleum Corporation v. BNW Property Co., No. 08-11-00238-CV in the Eighth Court of Appeals at El Paso (opinion issued Nov. 30, 2012) (represented Appellant) (court reversed judgment and rendered judgment that Appellee take nothing)
• Occidental Permian Ltd. v. French, No. 11-10-00282-CV in the Eleventh Court of Appeals at Eastland (opinion issued Oct. 31, 2012) (represented Appellant) (court reversed judgment and rendered judgment that Appellee take nothing)
• Petroleum Synergy Group, Inc. v. Occidental Permian, Ltd., No. 10-1044 in the Supreme Court of Texas (petition for review denied Jan. 27, 2012) (represented Respondent)
• Occidental Permian Ltd. v. The Helen Jones Foundation, No. 07-09-00059-CV in the Seventh Court of Appeals at Amarillo (opinion issued Jan. 31, 2011) (represented Appellant) (court reversed portions of judgment against Appellant and rendered judgment that Appellee take nothing)
• The Petroleum Synergy Group, Inc. v. Occidental Permian, Ltd., No. 07-08-00376-CV in the Seventh Court of Appeals at Amarillo (opinion issued Oct. 5, 2010) (represented Appellee) (court affirmed portions of judgment in favor of Appellee, reversed portions of judgment against Appellee, and rendered judgment that Appellant take nothing)
• McCammon v. Ischy, No. 03-06-00707-CV in the Third Court of Appeals at Austin (opinion issued May 12, 2010) (represented Appellant) (court reversed trial court’s judgment and rendered judgment that Appellee take nothing)
• Rusty’s Weigh Scales & Service, Inc. v. N. Tex. Scales, Inc., No. 08-08-00148-CV in the Eighth Court of Appeals at El Paso (opinion issued April 7, 2010) (represented Appellee) (court affirmed judgment for Appellee)
• Manchester Tank & Equipment Co. v. Engineered Controls International, Inc., No. 10-08-00207-CV in the Tenth Court of Appeals (opinion issued Dec. 30, 2009) (represented Appellee) (court affirmed judgment for Appellee)
• Texas A&M University v. Bading, No. 10-05-00139-CV in the Tenth Court of Appeals (opinion issued Aug. 15, 2007) (represented Appellant) (court reversed and remanded)
• Univ. of Texas Med. Branch at Galveston v. Thompson, No. 14-06-00014-CV in the Fourteenth Court of Appeals (opinion issued June 20, 2006) (represented Appellant) (court reversed and rendered judgment that Appellee take nothing)

US Court of Appeals, Fifth Circuit

Experience prior to joining Hunton:

• MIECO, L.L.C. v. Pioneer Natural Resources USA, Inc., No. 23-10575 in the US Court of Appeals, Fifth Circuit (opinion issued July 16, 2024) (filed amicus brief on behalf of Permian Basin Petroleum Association)
• In re Lothian Oil, Inc., No. 12-50462 in the US Court of Appeals, Fifth Circuit (opinion issued Jan. 7, 2014) (represented Appellee)
• Breen v. Tex. A&M Univ., No. 04-40712 in the US Court of Appeals, Fifth Circuit (opinion issued April 24, 2007) (represented Appellee)
• Jesuit College Preparatory School v. Butler, No. 02-10174 in the US Court of Appeals, Fifth Circuit (opinion issued Feb. 26, 2003) (represented Appellee) (appeal dismissed as moot)

US Supreme Court

Experience prior to joining Hunton:

• Lothian Cassidy, LLC v. Ransom, No. 15-50138 in the Supreme Court of the United States (petition denied August 12, 2015) (represented Respondent)

• Kickapoo Traditional Tribe of Texas v. State of Texas, No. 07-1109 in the Supreme Court of the United States (petition denied Oct. 6, 2008) (represented Respondent)
• Breen v. Southerland, No. 04-40712 in the Supreme Court of the United States (petition denied July 23, 2007) (represented Respondents)
• Fisher v. Texas, No. 04-0112 in the Supreme Court of the United States (petition denied Aug. 18, 2005)

• Recognized as a Leader in Oil & Gas Litigation, Nationwide, Chambers USA, 2024-2025
• Recognized as a Best Lawyer for Appellate Law, The Best Lawyers in America, 2021-2025
• Recognized as a Top Rated Appellate Attorney (2015-2025) and Rising Star (2004-2005, 2007-2014), Texas Super Lawyers
• Recognized as a Legal Leader on the Rise, Texas Lawyer, 2013
• Named a Finalist, Austin Under 40 Awards, 2009
• Recognized as AV® Preeminent Peer Review Rated in Martindale-Hubbell

• Board Certified in Civil Appellate Law, Texas Board of Legal Specialization
• Fellow, Texas Bar Foundation
• Member, Texas Bar College
• Member, State Bar of Texas and State Bar of Texas Appellate Section
• Member, Austin Bar Association and Austin Bar Association Civil Appellate Section
• Former Member, Robert W. Calvert American Inn of Court