Claire N. Raggio

Jose Luzarraga is a member of the Products, Catastrophic and Industrial Litigation team. He focuses his practice on Automotive, Transportation and Commercial Litigation. He has advised clients through all aspects of litigation from claim response, discovery, experts, and representation in trial courts, arbitrations, and courts of appeal. Jose works with clients to assess, evaluate, and manage risk to find solutions that achieve the client’s strategic goals.

Tonya Meier's practice is focused on resolving commercial disputes and challenges for real estate developers, landowners and a variety of other businesses, particularly in the areas of environmental law, land use, contract and employment disputes, fraud and DTPA violations. She spends the majority of her time advising clients and handling challenging litigation before state and federal courts, government agencies and municipalities throughout Texas. Toni is well-equipped to advise clients and...

Shawn C. Helms is co-head of the Firm’s Technology Transactions & Outsourcing Practice. Shawn has broad experience in the areas of information technology, digital health, AI, telecommunications and outsourcing. He focuses his practice on complex transactions involving technology and intellectual property, including business process outsourcing (BPO) and information technology outsourcing (ITO), licensing, cloud computing arrangements (infrastructure as a service (IaaS), software as ...

Richard Schellhammer focuses his practice on construction law and business litigation, with an emphasis on design professional malpractice defense and commercial and residential construction litigation.Richard has experience in all aspects of the construction process, including negotiation and preparation of design and construction contracts, risk allocation, and project management. He litigates and arbitrates disputes involving design and construction errors, delay claims, building performan...

Scott Deatherage has practiced law for over 30 years in the areas of environmental, energy, water law, and business law. After spending 28 years at large law firms, he formed his own law firm. In energy, he represents developers and investors in solar, wind, other renewable energy, and energy storage projects. His environmental practice includes the representation of landowners, real estate developers, banks, and private equity firms in dealing with soil and groundwater contamination. Scott g...

Mark J. Dyer is a lawyer recognized by Best Lawyers in the practice areas of Commercial Litigation, Litigation - Construction and Personal Injury Litigation - Defendants. Mark J. practices law in Dallas, Texas Best Lawyers has recognized Mark J. Dyer since 2021. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Mark J. Dyer is held by other lawyers.

Rex A. Mann is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Intellectual Property and Litigation - Patent. Rex A. practices law in Dallas, Texas Best Lawyers has recognized Rex A. Mann since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Rex A. Mann is held by other lawyers.

David Lisch focuses his practice on virtually all aspects of patent litigation, along with trademark and copyright prosecution and litigation, for a variety of industries and technologies. His engineering background, coupled with his tailored IP experience, allows him to more easily evaluate and work to solve his clients’ issues. His patent litigation work involves performing pre-filing infringement analysis and drafting of claim charts through trial, including reviewing and analyzing a...

Ashley E. Johnson is a lawyer recognized by Best Lawyers in the practice area of Appellate Practice. Ashley E. practices law in Dallas, Texas Best Lawyers has recognized Ashley E. Johnson since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Ashley E. Johnson is held by other lawyers.

James P. Whalen is a lawyer recognized by Best Lawyers in the practice areas of Criminal Defense: General Practice and Criminal Defense: White-Collar. James P. practices law in Frisco, Texas Best Lawyers has recognized James P. Whalen since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which James P. Whalen is held by other lawyers.