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Derek Gilliland

Attorney Derek Gilliland

Areas of Concentration

Derek Gilliland focuses on trying cases. While he oversees the firm’s intellectual property litigation practice, Derek handles all types of civil lawsuits including personal injury, products liability, and breach of contracts. Derek has been an instrumental member of the trial teams for the firms to biggest intellectual property verdicts.

In 2010, he was a key member of the trial team that obtained a $27,000,000 verdict for DataTreasury. The verdict was later enhanced to $54,000,000 for willfulness and ultimately settled on appeal.

In 2013, Derek was co-lead trial counsel for the team that obtained a $95,795,507 verdict in federal court in Tacoma, Washington for Syntrix Biosystems. This is the largest patent infringement verdict in the State of Washington and was the 20th largest verdict in the United States during 2013 according to ALM. The verdict was settled on appeal for $70,000,000.

Derek has successfully argued before the Texas Supreme Court on behalf of a personal injury plaintiff in the case of Daughters of Charity Health Services of Waco v. Linnstaedter, 226 S.W.3d 409 (Tex. 2007).

Derek is a frequent seminar speaker for the Texas State Bar, AIPLA, and other professional organizations.


  • Baylor University School of Law (J.D. 1998), magna cum laude
  • Texas A&M University (B.S.M.E. 1993), magna cum laude

Bar Admissions and Registrations

State of Texas; United States District Courts for the Eastern, Western, and Northern Districts of Texas; United States District Court for the Eastern District of Michigan; The United States Court of Appeals for the Federal and Fifth Circuits

Registered Patent Attorney with United States Patent & Trademark Office

To know more about our Longview personal injury attorney or to speak with him in-person, contact The Sorey Law Firm, P.L.L.C. at (903) 212-2822 and schedule a free consultation.

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Dan Sorey & The Team

Attorney Dan Sorey founded The Sorey Law Firm, P.L.L.C. with the desire to establish his own legal practice with personal, client-centered legal services that address the specific needs of accident victims and injured parties.

Dan Sorey
Attorney / Founder

John Hull

Derek Gilliland

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