Andrew M. Gross



Andrew is a partner with experience in a wide array of intellectual property matters. He is a member of the firm’s Intellectual Property Litigation, Business Litigation & Dispute Resolution, and Mechanical & Electromechanical Technologies Practices.

Andrew’s practice involves litigating patent, trademark, and other complex technology-based disputes in federal courts throughout the United States. He is experienced in managing and handling all aspects of litigation from pre-filing investigations through trial and appeal.

Andrew also performs intellectual property due diligence and transactional work, particularly in connection with business combinations and formations. In one billion-dollar transaction, Andrew was responsible for the due diligence of hundreds of patents and for preparing and negotiating the joint development agreements, license agreements, and supply agreements.

Additionally, Andrew prepares and prosecutes patent applications before the United States Patent and Trademark Office, prepares opinions concerning patent infringement and invalidity, and provides strategic patent counseling.

Andrew’s experience spans diverse industries and technologies, including consumer goods, software, medical devices, global positioning systems, automotive transmissions, turbochargers, aircraft fuel systems, turbine generators, solar concentrators, photovoltaic cells, and electrocatalysts for fuel cells. 

Before beginning his legal career, Andrew was a mechanical engineer with Caterpillar, Inc. As an engineer, he designed and performed structural and vibrational analysis on large diesel engines and construction equipment. 


  • Georgetown University Law Center (J.D.)
  • Iowa State University (B.S., mechanical engineering)


  • Illinois
  • United States Patent and Trademark Office (USPTO)
  • United States Court of Appeals for the Federal Circuit
  • U.S. District Court for the Northern District of Illinois
  • U.S. District Court for the Eastern District of Texas
  • U.S. District Court for the Western District of Texas
  • U.S. District Court for the Eastern District of Wisconsin
  • U.S. District Court for the Western District of Wisconsin

Selected Publications

  • Quoted, “Amazon Self-Publishers Eye Emerging Legal Arena to Fight Piracy,” Bloomberg Law, July 18, 2022
  • "Do We Need a Small Claims Court for Patent Disputes?,” IP Litigation Current, May 10, 2022
  • "Insurers Must Pay Cost of Defending Case Stemming from Use of Famous Marathoner’s Name,” IP Litigation Current, October 1, 2018 (co-author)
  • "The Second Circuit’s Fox News Decision Suggests That the Value of an Accused Secondary Use Dictates What Constitutes Fair Use,” IP Litigation Current, April 3, 2018
  • "Samsung v Apple: calculation complication,” Intellectual Property Magazine, 56-57, February 2017
  • "In re: TC Heartland LLC: Status Quo for Venue Selection in Patent Suits (For Now),” IP Litigation Current, May 25, 2016
  • "Supreme Court on Induced Infringement: Good-Faith Belief of Invalidity Not a Defense and Knowledge of Infringement Required,” IP Litigation Current, June 2, 2015
  • “Federal Circuit Finds Disclaimer Based on ‘Object of Invention’ Language,” IP Litigation Current, March 25, 2015
  • "Green Technology Pilot Program: Impact of the USPTO’s Elimination of the Green Technology Classification Requirement,” Foley & Lardner LLP Energy Industry Legal News, September 2010