Daniel L. Tristan

Heather L. Brown is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Commercial Finance Law, Project Finance Law and Securitization and Structured Finance Law. Heather L., who practices law in Houston, Texas, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Heather L. is held by other top lawyers in the same geographic and legal practice area.

Tracy C. Temple is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice. Tracy C., who practices law in Houston, Texas, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tracy C. is held by other top lawyers in the same geographic and legal practice area.

Molly Dear Abshire has been licensed to practice law in the State of Texas since 1993 and is certified as an Elder Law Attorney by the National Elder Law Foundation. She received a J.D. from South Texas College of Law and her B.A. in English from Texas A&M University in 1989. Ms. Abshire has authored professional papers and Houston Chronicle articles, which typically focus on topics such as estate planning, Medicaid planning, elder law and special needs trusts. She is a former President o...

Neal Sweeney is a partner in the Litigation Practice Group. He focuses his practice exclusively on construction law and government contracts. Drawing on his more than 30 years of experience with the construction industry, Neal counsels clients on major infrastructure and P3 projects such as transit, airports, highways, wastewater treatment, and tunnels. He is also involved in energy and industrial projects linked to clean technology and renewable sources, including hydro, solar, wind, geother...

Derrick Carson is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration, International Arbitration - Commercial and Litigation - Construction. Derrick, who practices law in Houston, Texas, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Derrick is held by other top lawyers in the same geographic and legal practice area.

Mark Dundon is a tax partner in the Houston office of Kirkland & Ellis LLP. Mark’s practice focuses on the tax aspects of complex mergers, acquisitions, divestitures, joint ventures, restructurings and financing transactions, primarily in the energy industry. He has represented large and mid-cap private equity funds and their portfolio companies, as well as large public and private corporations.

Brian E. Simmons focuses on all facets of intellectual property law, including patent and trade secret litigation; patent counseling; due diligence investigations for investments, acquisitions, and divestitures; technology transfers, joint developments, and other research agreements; licenses; transactions involving IP; and risk consulting. Mr. Simmons has represented clients in a variety of matters in the chemical arts after serving as a senior research chemist prior to practicing law. His e...

Douglas C. Lionberger is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Douglas C., who practices law in Houston, Texas, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Douglas C. is held by other top lawyers in the same geographic and legal practice area.

Patrick Hayes' practice focuses on commercial real estate, and assisting clients in acquiring, disposing, capitalizing and forming companies. Patrick’s real estate practice covers all aspects of commercial real estate, including acquisition, development, capitalizing, financing, leasing and disposition of all product types of commercial real estate. His corporate/commercial practice centers on the formation and restructuring of commercial entities, including corporations, partnerships a...

Douglas C. Atnipp is the Texas Co-Regional Managing Shareholder, Co-Managing Shareholder of the Houston office and Co-Chair of the firm's national Energy and Natural Resources Practice. Doug has more than 25 years of experience representing clients engaged in all facets of the energy business. He is involved in a wide range of energy-related transactions including energy finance, joint ventures and strategic alliances, and acquisitions and dispositions of energy-related assets. In addition to...