David L. Principe

Special Counsel Buffalo
David Principe

David is a registered patent attorney with over 25 years of experience in representing and advising clients with respect to a broad range of patent, trademark and copyright matters.

David is known for delivering practical, efficient solutions based on his extensive experience in connection with handling patent and trademark matters before the U.S. Patent and Trademark Office, and for efficiently resolving intellectual property disputes. His practice includes domestic and international patent and trademark prosecution; trademark oppositions and cancellations; non-infringement opinions; patent and trademark clearance opinions; and dispute resolution in all areas of intellectual property.

David has experience representing clients across the entire spectrum, including individuals, startup companies, small and medium-sized companies, research institutions and publicly-held companies. He has also represented clients across many different industries. His patent work is focused on the mechanical and electromechanical arts based on his background in mechanical engineering and experience as a project engineer in the plastics industry.


Areas of Practice


Honors & Awards

  • Named to Best Lawyers: Ones to Watch in America®

Education & Admissions

  • University of Georgia School of Law, J.D., 1994
  • University of Notre Dame, B.S., Mechanical Engineering, 1989
Admitted to Practice
  • New York
  • Georgia
  • U.S. Patent and Trademark Office – Registered Patent Attorney


  • Represented inventors before the U.S. Patent and Trademark Office in connection with a broad range of mechanical and electromechanical technologies for over 25 years.
  • Represented companies in connection with designing around existing patents, including noninfringement and freedom to operate opinions.
  • Assisted in successfully representing a large manufacturer of plumbing products in the Midwest in connection with patent litigation in the Northern District of Illinois.
  • Represented companies and individuals at various stages in connection with the development and protection of medical devices.
  • Represented a broad range of clients in connection with developing both domestic and international trademark portfolios of all sizes.
  • Represented a media personality in connection with developing a trademark portfolio, resolving intellectual property disputes and assisting with licensing issues.
  • Successfully represented a manufacturer of copper-infused athletic wear in a trademark opposition proceeding before the Trademark Trial and Appeal Board that went to a final decision on the merits.The client prevailed on defenses to likelihood of confusion and fraud claims.
  • Assisted many clients in responding to copyright infringement claims from responding to demand letters, conducting settlement negotiations and defending clients in connection with lawsuits.
  • Handled defenses to copyright infringement for a wide variety of clients from individuals to cultural institutions to publicly-held companies.
Representative Matters
  • Tommie Copper IP, Inc. v. Gcool-Tech USA LLC, Opposition No. 91223768 (T.T.A.B. 2018); counsel to Gcool-Tech in a trademark opposition involving likelihood of confusion and fraud claims. Complete victory in a final decision on the merits.

Speaking Engagements

View All
  • Presenter, “Legal Aspects of International Trade,” World Trade Center Buffalo Niagara’s Global Business Administration Program

Activities & Professional Associations

Past Activities

  • Niagara Frontier Intellectual Property Law Association, President
  • The University of Georgia, Business Outreach Services, Small Business Development Center, Macon, Georgia, Guest Lecturer
  • Mercer University Stetson School of Business, Douglas County, Georgia, Guest Lecturer

Professional Associations

  • American Bar Association
    • Section of Intellectual Property Law
  • Bar Association of Erie County

Articles & Publications


  • Co-Author, “Fighting Back Against Patent Trolls,” Buffalo Law Journal