Clayton C. Cannon

Jack O'Neill has been trying large complex cases for over 45 years. His experience in the courtroom involves many cases that have been widely publicized. Mr. O’Neill was co-trial counsel for UPR, Inc. in its attempted takeover of Pennzoil. He was lead counsel for Mitchell Energy Corporation in the company’s effort to overturn a $204 million judgment rendered against the company in a case tried for the company by another law firm. On appeal, argued by Mr. O’Neill, the case wa...

Bryan S. Dumesnil is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Regulatory Enforcement (SEC, Telecom, Energy). Bryan S., 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 Bryan S. is held by other top lawyers in the same geographic and legal practice area.

Heim, Payne & Chorush co-founder Michael Heim specializes exclusively in intellectual property litigation and antitrust lawsuits involving intellectual property. Mr. Heim represents plaintiffs and defendants throughout the United States in patent litigation in a wide range of technologies including microprocessors, computer architecture, memory control systems, cellular telephone systems, data transmission systems, on-line gaming systems, database caching software, logging-while-drilling ...

Wayne A. Yaffee is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Real Estate Law. Wayne A., who practices law in Houston, Texas, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Wayne A. is held by other top lawyers in the same geographic and legal practice area.

Sandra I. Dorsthorst is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Sandra I., 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 Sandra I. is held by other top lawyers in the same geographic and legal practice area.

Taylor Toombs Imel is a top attorney recognized by Best Lawyers in the practice area(s) of Collaborative Law: Family Law and Family Law. Taylor Toombs, 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 Taylor Toombs is held by other top lawyers in the same geographic and legal practice area.

Charley Davidson leads the firm’s criminal defense practice, where he offers passionate, responsive counsel to guide clients facing state and federal charges in the areas of white collar and blue collar crime. Prior to joining Hanszen Laporte, he was a partner at a large international firm specializing in white collar defense, as well as a partner at a Houston-based criminal defense law firm. Charley also spent three years as an assistant U.S. attorney in the U.S. Attorney’s Offic...

Avalyn C. Langemeier is a partner at Foster LLP in the Houston office and is Board Certified in Immigration and Nationality Law by the Texas Board of Legal Specialization. She focuses her practice on corporate immigration. She primarily manages employment-based immigration processes for employers, from large employers and academic, healthcare and religious organizations to start-up companies, across a wide variety of industries. She has extensive experience with corporate compliance and immig...

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...

José R. Pérez, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. José R., who practices law in Houston, Texas, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which José R. is held by other top lawyers in the same geographic and legal practice area.