William Zac

Duffy

Senior Attorney
500 N. Akard Street, Suite 3800
Dallas, TX 75201-6659

Overview

Zac focuses his practice on commercial litigation and intellectual property law. Prior to attending law school, he worked for several years as a technical resource for a software company in the financial services industry. His technical knowledge has been invaluable to clients in disputes that involve software, including patent litigation and complex trade secret cases. Zac also has experience with copyright and trademark infringement litigation and he has prosecuted a significant number of trademark applications with the United States Patent and Trademark Office (USPTO).

Zac has experience with patent disputes related to computer software, home security systems, video imaging, digital cameras, air purification devices, computer transaction systems, oil and gas exploration equipment, as well as products sold in the beauty industry.

Education

Admissions

Achievements

  • Thomson Reuters – Texas Rising Stars (2011-2018)

Overview

Zac focuses his practice on commercial litigation and intellectual property law. Prior to attending law school, he worked for several years as a technical resource for a software company in the financial services industry. His technical knowledge has been invaluable to clients in disputes that involve software, including patent litigation and complex trade secret cases. Zac also has experience with copyright and trademark infringement litigation and he has prosecuted a significant number of trademark applications with the United States Patent and Trademark Office (USPTO).

Zac has experience with patent disputes related to computer software, home security systems, video imaging, digital cameras, air purification devices, computer transaction systems, oil and gas exploration equipment, as well as products sold in the beauty industry.

Experience

  • Patent Litigation

    Defended a local software company in patent litigation in the Eastern District of Texas.

  • Patent Litigation

    Represented a company that created a new hair styling product in litigation to enforce patent. (Northern District of Texas).

  • Patent Litigation

    Represented two security service companies, Trover Group, Inc. and The Security Center, Inc., in a case involving the enforcement of patents related to digital video security

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