Gary D. Colby is a patent attorney and member of Preti Flaherty’s Intellectual Property practice group with experience representing diverse clients, including large and small pharmaceutical and chemical companies, biotechnology firms, universities, and individuals. He practices out of the firm’s Boston office, where he focuses on biotechnology, pharmaceuticals, and the medical and chemical industries. He is experienced in drafting and procuring patents, counseling clients regarding the scope and significance of IP rights, and negotiating technology-related agreements on behalf of his clients. Also an experienced patent litigator, Gary concentrates on the technology and patent law-specific aspects of contested matters.

Gary regularly advises start-ups on IP issues, assisting with patenting and commercialization of inventions owned by not-for profit institutions and providing analyses of patent issues. In addition, Gary counsels clients in the field of alternative energy technologies, especially biofuel production technologies. He previously worked as a Technology Development and Patent Specialist at the National Cancer Institute. His particular focus is on providing relevant, actionable advice to enable clients to understand the effects of IP law on their business plans and options.

Prior to joining Preti Flaherty, Gary practiced law for more than 20 years at several notable IP firms in the Philadelphia, Pennsylvania, area.

Gary lives in Boston with his family.

Practice Areas


  • Georgetown University Law Center (J.D., 1996)
  • Virginia Polytechnic Institute and State University (Ph.D., 1993)
    • Anaerobic Microbiology
  • Virginia Polytechnic Institute and State University (B.S., 1988)
    • Chemical Engineering


  • U.S. Patent and Trademark Office
  • U.S. Supreme Court
  • Virginia

Professional Affiliations

  • Association of University Technology Managers
  • National Association of College and University Attorneys
  • Phi Sigma Biological Honor Society
  • Virginia State Bar Association

Honors & Awards

  • Technology Transfer Award, National Cancer Institute, 1996