John Hayes

Of Counsel

John has been practicing intellectual property law for over twenty-five years, concentrating primarily on patent application drafting and prosecution.

Intellectual property practice areas have also included trademarks, licensing, opinions on patentability, validity, and infringement, portfolio management, and European and PCT practice. His technical areas of experience include semiconductor devices with involvement in surface processing for an integrated circuit die and formation of transducer structures on an integrated circuit. Other areas of expertise are conventional and trunked communications systems, telephone switching, cellular RF communications, secure communications, audio and RF signal processing, semiconductor devices, computers, digital systems, software, and Internet business models.

John’s experience as a patent attorney has also included patent and trade dress litigation; consulting on domestic and foreign patent litigation matters; drafting of complaints and answers; Markman Hearing preparation; preparation of witnesses for deposition and trial, including expert witnesses; re-examination practice and interference practice. He has also conducted due diligence investigations and participated in patent acquisitions, helped prepare and negotiate patent purchase agreements, and investigated a wide range of patents for potential acquisition.

After obtaining his BSEE from Purdue University, John began a development engineering career at Motorola, helping lead the development of various Motorola communications products, including the first microprocessor-based test equipment for communications systems, test equipment for cellular telephone systems, and software-driven signaling encoders/decoders. Development work included RF design, digital logic design, microprocessor subsystems, and computer software development. Prior to beginning his legal education, John was intellectual property manager for Motorola’s Secure Communications Unit, concentrating on protecting innovations in encryption for voice and data transmissions.

Since leaving Motorola, John has practiced in a number of corporate environments, such as Lucent Technologies, IBM, and BlackBerry, as well as law firms, including an Irish firm of patent and trademark attorneys. John obtained his law degree from the John Marshall Law School in Chicago. He is admitted to practice law in Illinois as well as before the US District Courts for the Northern and Central Districts of Illinois, and the Courts of Appeals for the 7th and Federal Circuits. He is registered to practice before the US Patent & Trademark Office.


  • Computer systems, networks, and software
  • Semiconductor devices
  • RF communications systems, including cellular communications
  • Analog and digital circuits
  • Encoders/Decoders
  • Encryption
  • Audio Signal Processing


  • B.S. – Electrical Engineering,
    Purdue University
  • J.D.
    The John Marshall Law School