Kevin S. Mullen

Bill established HULSEY PC to apply a range of highly specialized experiences to a broad span of technical fields. Overview Mr. Hulsey began his career as nuclear engineering-trained US Navy submarine officer, and, after his active-duty military service, he continued his career by obtaining the experience and professional degrees, licenses and certifications to serve as a patent attorney in Texas and Tennessee, registered before US Patent & Trademark Office. Today, Mr. Hulsey responds to ...

Bill Barber has devoted his legal career to the field of trademark law, focusing primarily on trademark litigation and policing, handling cases in federal courts across the U.S. and before the U.S. Patent and Trademark Office. Experienced in all aspects of litigation, including jury and bench trials as well as appeals, Bill also handles domain name disputes through ICANN’s domain name dispute resolution policies. He regularly assists clients with a wide range of trademark needs, includi...

Margaret J. Sampson, PhD, focuses her practice on global, strategic intellectual property transactions and patent counseling surrounding the areas of life sciences, pharmaceuticals, research tools and medical devices. Life sciences and technology clients turn to her for evaluating, structuring, negotiating and documenting major transactions. Read full biography: https://www.mwe.com/people/margaret-j-sampson-phd/

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

Ashley Hoff is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Ashley, who practices law in Austin, Texas, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ashley is held by other top lawyers in the same geographic and legal practice area.

Kyle K. Fox is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Securities / Capital Markets Law. Kyle K., who practices law in Austin, Texas, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kyle K. is held by other top lawyers in the same geographic and legal practice area.

Ryan Squires is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Personal Injury Litigation - Defendants and Personal Injury Litigation - Plaintiffs. Ryan, who practices law in Austin, Texas, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ryan is held by other top lawyers in the same geographic and legal practice area.

Brian W. Oaks focuses his practice on intellectual property law, with a particular emphasis on patent post-grant trials, patent litigation and patent portfolio development and management. Read full biography: https://www.mwe.com/people/brian-w-oaks/

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

Darrell Windham is the managing member of the firm’s Austin office and has forty years of experience representing early stage companies, publicly traded and privately held clients, private equity funds and investors in complex mergers and acquisitions (M&A), strategic joint ventures, capital markets and other domestic and global business transactions. Darrell has experience in a wide variety of industries, including life sciences, medical devices, technology, software and semi-condu...