Paris A. Theofanidis

Alden Harris’ litigation experience spans a variety of technical fields. These include electrical and computer engineering, telecommunications, and biochemistry, and he’s put this knowledge to use litigating patent infringement cases in courts across the United States. Mr. Harris previously served as a law clerk to the Honorable Roy Payne of the United States District Court for the Eastern District of Texas in Marshall, Texas, and served as an acting law clerk to District Judge Ro...

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

Russell Chorush is a co-founder of Houston-based Heim, Payne & Chorush, a patent litigation boutique that is known for its sophisticated and effective litigation related to patent infringement and patent-related antitrust work. Russ is a true pioneer in patent-related antitrust litigation against pharmaceutical companies under the Sherman Antitrust Act and FTC v. Actavis, Inc., 133 S. Ct. 2223 (2013). Russ plays leadership roles on multifirm teams and has assisted in securing groundbreaki...

Franklin D.R. Jones, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Public Finance Law. Franklin D.R., 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 Franklin D.R. is held by other top lawyers in the same geographic and legal practice area.

David N. Calvillo is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Defendants. David N., 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 David N. is held by other top lawyers in the same geographic and legal practice area.

Tony L. Visage is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Securities. Tony L., who practices law in Houston, Texas, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tony L. is held by other top lawyers in the same geographic and legal practice area.

Shawn O’Brien is nationally recognized by his peers and clients as a leading tax practitioner with a focus on tax disputes and controversies involving state, federal and international tax authorities. Drawing on his 25 years of experience, Shawn represents clients in tax examinations and administrative appeals and, when necessary, serves as a forceful advocate in litigation before the US Tax Court, US district courts, the US Court of Federal Claims, state courts and federal appellate co...

Matthew P. Whitley is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Litigation - Intellectual Property and Litigation - Patent. Matthew, who practices law in Houston, Texas, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew is held by other top lawyers in the same geographic and legal practice area. Over his more than 20 years of practicing law, Matthew has ge...

Board Certified in Construction Law by the Texas Board of Legal Specialization, Ben Westcott, the firm’s Co-Managing Shareholder, has a practice that focuses on both transactional and dispute resolution aspects of construction law. He represents general contractors, subcontractors, suppliers and owners on substantial construction projects, including schools, public infrastructure, sports facilities, airports, petrochemical and industrial plants, highway projects, wastewater treatment fa...

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...