Our team

“I enjoy seeing ideas grow into companies, assisting innovators to do what they do best, and providing guidance to start up and established companies through the IP maze. I try to add value to every interaction I have.”

Bill is a registered patent and trade marks attorney with a range of knowledge and experience in the areas of physics, electrical and electronic engineering, and computing. Bill has been in the profession for over 29 years and became a partner of Madderns in 1996. He is a Member of Engineers Australia. Bill has worked as an engineer in the South Australian Police Force, designing radio communications systems, and has also worked for world-leading communications company, Motorola.

Bill is involved in the drafting and prosecution of patent, design and trade mark matters, in Australia and overseas. He travels overseas on a regular basis to attend conferences, and visit corporate clients, keeping them up-to-date with Australian IP trends and reporting the progress in various litigation and opposition matters for which he is responsible.

Bill has a particular interest in the Start-Up community having been involved in eChallenge (a business plan competition run by The University of Adelaide) as lecturer, as well as a finals judge. He is also involved in multiple incubators as well as attending Start-up Weekends, and various community spaces to support the resident business enterprises.

Bill is also passionate about education, providing presentations to community groups and client in-house engineers and scientists, and is currently an Adjunct Lecturer at The University of Adelaide – Legal Aspects of Entrepreneurship. He was previously a lecturer for the training of patent attorneys, at the Academy of Education of the Institute of Patent and Trade Mark Attorneys of Australia, which involved teaching the skill of drafting patent specifications to trainee patent attorneys, and also, along with fellow lecturers, setting and examining the examinations for qualification as a patent attorney in Australia in the patent drafting subject. Bill was awarded Fellowship of the Academy of Education of the Institute of Patent and Trade Mark Attorneys of Australia.

Bill is also an avid road cyclist and enjoys riding in the hills of Adelaide.






  • Registered Patent Attorney (AU & NZ)
  • Registered Trade Mark Attorney
  • Bachelor of Science (Physics)
  • Graduate Diploma of Electronic Systems


  • Physics
  • Computer Related Technology
  • Radio Communications
  • Medical Devices
  • Communication Protocols
  • Weapon Systems
  • Trade Mark Advisory & Strategy
  • Trade Mark Infringement Advice
  • Domain Name Registration
  • Litigation Support


  • IPTA (Fellow)
  • Academy of Education of IPTA (Fellow)
  • FICPI Australia (Secretary)
  • Engineers Australia