Andrew J. Doyle
"Intellectual Property rights make up the lifeblood of the innovation economy by incentivizing entrepreneurs to take on the risks and failures required of all major technological advancements."

Andrew J. DoyleAssociate

120 South LaSalle Street
Suite 2100
Chicago, IL 60603VCard
312.577.7007 fax
LinkedInDownload PDF


J.D., Loyola University Chicago, 2012
M.E., Electrical Engineering, University at Buffalo, 2009B.E., Electrical Engineering, University at Buffalo, 2007


Technical Areas

Bar & Court Admissions

IllinoisU.S. Patent and Trademark Office

Andrew J. Doyle has a broadly-based IP law practice focused on the preparation and prosecution of patent applications in the United States and abroad. High technology companies trust Andrew to work closely with their engineering teams to identify the inventive aspects in their new products and perform all aspects of the patent preparation and prosecution process on their behalf before the United States Patent & Trademark Office.

Andrew’s practice goes beyond the details of the patent preparation and prosecution process to include managing client’s U.S. and international intellectual property assets, advising clients on leveraging their intellectual property assets to further their overall business goals, analyzing competitor’s patent portfolios, advising clients on product design-arounds, and, if needed, preparing freedom-to-operate, right-to-use, patentability, non-infringement, infringement, and validity opinions.

Clients that Andrew assists range from individual inventors and start-ups to Fortune 500 companies and focus on technologies that are as equally diverse, including, among others:

  • Aerospace & Military Defense
  • Autonomous & Semi-Autonomous Vehicles
  • Semiconductors & Semiconductor Manufacturing
  • High Technology Sensor & Surveillance Equipment
  • Display Devices
  • Electrical Circuitry
  • Computer Software & Hardware
  • Antennas
  • Transmitters
  • Signal Processors
  • Precision Motion Controls
  • Sonar/Radar/LIDAR
  • Medical Devices
  • Lighting
  • Filtration
  • Industrial Machinery
  • Package Delivery & Logistics

Andrew relies on his extensive experience preparing and prosecuting patents, an undergraduate and master’s degree in Electrical Engineering, and years of real-world engineering experience at an international aerospace conglomerate, to provide clients with meaningful advice from the moment they conceive of their inventive concept up until their product launch date and beyond. 

Somaltus LLC v. Johnson Outdoors Inc. (E.D. Tex. 2017). Performed infringement and invalidity analysis on U.S. Pat. No. 7,657,386, which our client’s product was alleged to infringe, including uncovering errors during prosecution that led the Plaintiff to voluntarily dismiss the case.

Performed due diligence on CLARCOR’s IP assets and drafted the documents transferring CLARCOR’s IP assets to Parker Hannifin as part of Parker Hannifin’s $4.3 billion acquisition of CLARCOR.

Conducted due diligence assessment of IP assets assigned to FibeRio and TDC Filter Manufacturing and prepared a report for CLARCOR leadership assessing strategic value of those IP assets relative to CLARCOR’s business model. Drafted agreements for acquisition of FibeRio’s and TDC Filter Manufacturing’s patent and trademark assets by CLARCOR. 


  • “Permissible Repair and Prohibited Reconstruction,” National Air Filtration Association Annual Convention, September 2017.
  • "Samsung v. Apple: How Beauty Killed the Beast," Rockford Chamber of Commerce, 2018.
  • American Intellectual Property Law Association
  • Intellectual Property Owners Association
  • Intellectual Property Law Association of Chicago
  • International Intellectual Property Law Association
  • Institute of Electrical and Electronics Engineers
  • Aerospace and Electronic Systems Society

Hosted on the FirmWisesm Platform | Designed by Charette Design