Ellen Cha is a patent and trade mark attorney based in Perth.

With a background in chemical engineering, Ellen specialises in mineral processing, gas separation technologies, processing equipment, building material and agrochemicals. 

In addition to drafting and prosecuting patent applications and preparing of validity, freedom to operate and infringement opinions, Ellen also has experience in contentious proceedings including patent oppositions. 


  • Master of Chemical Engineering – University of Melbourne
  • Bachelor of Science – University of Western Australia
  • Master of Intellectual Property, University of Technology Sydney
  • Registered Patent and Trade Marks Attorney (Australia and New Zealand)


  • English
  • Korean