Overview

Mr. Kellner practices a variety of intellectual property law disciplines. He has drafted and prosecuted patents in the mechanical, thermodynamic, electrical, and biomedical technologies, along with computer software, industrial construction, and shipping and transportation systems.

Before joining the firm, Mr. Kellner served as a Managing Editor of the Indiana Journal of Global Legal Studies, and prosecuted patents on behalf of startup clients with the Intellectual Property Law Clinic at Indiana University. Professionally, Mr. Kellner worked as a summer associate at Leydig, in the Chicago office, where he worked on various prosecution and litigation matters. Mr. Kellner also worked as a summer associate for Tilleke & Gibbins, in their Bangkok office, working on various intellectual property regulatory matters both within Thailand and the greater ASEAN region.

Education

• Indiana University Maurer School of Law, J.D., 2021
• University of Texas at Austin, B.S.A. in Physics, 2018

Admissions

• Registered to practice before the U.S. Patent and Trademark Office
• Illinois State Bar

Honors

• Recognized in The Best Lawyers: Ones to Watch^®, 2026

Professional Affiliations

• Vereinigung von Fachleuten des Gewerblichen Rechtsschutzes (VPP)

Articles, Publications & Lectures

• Hughie Kellner, Mitigating the Effects of Intellectual Property Colonialism on Budding Cannabis Markets, 28 Indiana J. Global Legal Stud. 377 (2021)

Languages

• English
• German

Practices

• IP Litigation
• Patent Preparation and Prosecution

Technologies

• Electrical, Computer, and Software Technologies
• Mechanical, Electromechanical, and Optical Technologies

Insights

• Claudia Stangle, Nicole Kopinski and Hughie Kellner Attend IPLAC Happy Hour
  January 15, 2026
• Leydig Frankfurt Office Co-Hosted U.S. Patent Law Seminar on September 23
  September 24, 2025
• Leydig Attorneys Named Best Lawyers: Ones to Watch® for 2026
  August 25, 2025
• Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Germany
  May 12, 2025
• Leydig Sponsors IPBC Europe on March 24-26 in London
  April 9, 2025
• Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Berlin
  October 25, 2024
• Leydig Sponsors IPO Annual Meeting on September 22-24 in Chicago
  September 25, 2024
• Leydig Sponsors IPO Annual Meeting on September 22-24 in Chicago
  September 17, 2024
• Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Germany
  November 1, 2023