John L. Lyon



Law School

Georgia State University College of Law, 2010.


Georgia Institute of Technology, Bachelor of Science in Computer Science, 2005, with honors.

practice areas


John’s practice areas at Thomas | Horstemeyer include electrical/computer patent prosecution, litigation, and open source software licensing.  Prior to joining Thomas | Horstemeyer, John worked at the law firm of Webb, Klase and Lemond, where he litigated a number of class action lawsuits.

John graduated from Georgia Tech with honors.  He received his Bachelors of Science in Computer Science and minored in German.  As part of his studies, John specialized in networking, databases, and information security.

While at Georgia Tech, John served as the Operations Manager and the General Manager of WREK Radio, Georgia Tech’s college radio station. During his tenure, John oversaw numerous changes at WREK radio, including the station’s relicensing efforts as well as the relocation of the station’s broadcast studio and equipment to new facilities.

In 2005, John joined SPI Dynamics, Inc., where his work focused on web-application security. During his time at SPI, John worked on the development of numerous software platforms, including WebInspect®, AMP®, and DevInspect®, which were designed to automate security auditing and testing of web-applications. These software platforms automatically conducted penetration testing of web-applications using a database of known vulnerabilities as well as heuristic algorithms for detecting undiscovered vulnerabilities. To facilitate testing, John developed web-applications to include specific vulnerabilities as benchmarks for determining the accuracy of WebInspect®, AMP®, and DevInspect®. John continues to follow the latest developments in the computer security industry to keep current on the latest technologies and trends.

After working for SPI Dynamics, John attended Georgia State University College of Law in 2007. While at Georgia State, John focused on intellectual property law, litigation, and arbitration. While at Georgia State, John spent a semester studying international commercial arbitration at Johannes Keppler University in Linz, Austria.

John regularly speaks on topics related to his practice.  This includes educating fellow attorneys and the public about open source software licensing, software patents, and other intellectual property matters.


John is licensed to practice in Georgia and is admitted to practice before the United States District Court for the Northern District of Georgia, the Georgia Supreme Court, the Georgia Court of Appeals, and the U.S. Patent and Trademark Office.


John is a member of the American Intellectual Property Law Association (AIPLA).  Within the AIPLA, John is a member of the New Lawyers Committee and the Standards and Open Source Committee, where he serves as cochairman of the of the Open Source Software subcommittee.