Mark D. Holmes

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...

William K. Luyties is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law, Litigation - Construction and Litigation - Insurance. William K., who practices law in Houston, Texas, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William K. is held by other top lawyers in the same geographic and legal practice area.

Kelly Hartmann focuses on resolving client issues through innovative, cost-effective strategies that align with business goals—balancing aggressive litigation with practical resolution. He represents energy, maritime, and construction firms, their underwriters, and insurers, and handles complex litigation including wrongful death, Jones Act, drilling operations, health care, and trucking liability cases. Kelly also advises clients on contracts and commercial documents, including master ...

Sara Abbott McEown is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law and Litigation - Construction. Sara, 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 Sara is held by other top lawyers in the same geographic and legal practice area.

Keith R. Derrington is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Keith R., 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 Keith R. is held by other top lawyers in the same geographic and legal practice area.

John Schwambach focuses his practice on the trial and appeal of complex commercial disputes. Mr. Schwambach handles complex civil matters in both state and federal courts. He has briefed and argued many appeals and original proceedings in mandamus before Texas appellate courts, including the Texas Supreme Court and the First, Third, Fourth, Fifth, Sixth, Eighth, Ninth, Tenth, Thirteenth, and Fourteenth Courts of Appeals. Mr. Schwambach has also briefed and argued numerous pre-trial motions in...

Hugh M. Ray III is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Oil and Gas Law. Hugh M., who practices law in Houston, Texas, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hugh M. is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit www.gibsondunn.com/lawyer/florey-tull/ .

Joshua Wyde is a patent attorney who focuses on Patent and Trademark Appeal Board post-grant proceedings (PGRs and IPRs), federal patent, trademark, and copyright litigation, patent portfolio analysis, formal infringement/invalidity legal opinions, and IP licensing. An electrical engineer and entrepreneur, Mr. Wyde relies on his software and hardware experience to represent plaintiffs and defendants. He handles cases from pre-complaint investigation to a jury verdict. Mr. Wyde spent years han...

Amy Karff Halevy is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Amy Karff, who practices law in Houston, Texas, has been recognized since 2003. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Amy Karff is held by other top lawyers in the same geographic and legal practice area.