David L. Ciesielski leverages more than a decade of experience in engineering to execute intellectual property strategies for clients in the software, computer, and electrical industries. In addition to drafting and prosecuting patents, Mr. Ciesielski supports clients with copyright strategy and prosecution, preparing and prosecuting design applications both at the United States Patent Trademark Office and internationally, and working with foreign associates to build and maintain clients’ global patent portfolios.  

Mr. Ciesielski’s automotive engineering background allows him to quickly understand client inventions, and more efficiently and effectively draft patent applications. He has prosecuted patents for a range of technologies including: 

  • Semiconductors 
  • Vehicle diagnostics 
  • Gaming systems 
  • Vehicle propulsion systems and components 
  • Heavy duty vehicle suspensions
  • Structural deck components
  • Telecommunication systems and components

Prior to joining MBHB, Mr. Ciesielski spent more than a decade as a systems engineer at Delphi Automotive Systems, integrating vehicle electronic systems and developing service procedures and programs. He has also worked as an automotive technician at various General Motors dealerships.   

  • J.D., Indiana University School of Law
  • M.S., GMI/Kettering University,

    Manufacturing Management

  • Auto Diesel Technician Certificate, Northwestern Business College Technical Center
  • B.S., Purdue University,

    Electrical Engineering

Bar Admissions
  • Illinois
  • U.S. Patent & Trademark Office
  • Society of Automotive Engineers (SAE)
    • Member
  • Institute of Electrical and Electronics Engineers (IEEE)
    • Member
  • American Intellectual Property Law Association (AIPLA)
    • Member


  • Helped a multi-million-dollar tool company protect its patent rights internationally. 
  • Counseled clients on freedom to operate, infringement and patentability for various technologies. 
  • Filed international design applications using the World Intellectual Property Office (WIPO)’s eHauge system.  
  • Registered copyrights for computer programs and databases at United States Copyright Office.   
  • Worked with foreign associates to secure patents in more than 25 countries.