As a post-doctoral scientist, John worked in the United States at Yale University and subsequently as a research associate at Genentech Inc., mainly in microbial genetics and molecular biology. He also spent time at Cold Spring Harbor. He then joined a law firm in New York to begin training as a patent attorney, before returning to Australia.
John specialises in the drafting and prosecution of patent applications directed to all facets of biotechnology, including inventions relating to molecular biology, cytokines and stem cells, genetically modified plants, animals, microorganisms, immunology, diagnostics, pharmacology and microbiology. John joined Davies Collison Cave in 1989 becoming a Partner in 1995. In 1999, John helped the firm establish an office in Brisbane before returning to Melbourne in 2003.
John has particular experience in genomic, proteomic and transcriptionomic patents and the interface between biochip technology and molecular diagnostics. He is also involved in protecting inventions relating to stem cell therapy and proteomic therapy. He is involved in both local and overseas work and has a substantial United States practice at the drafting and prosecution levels. John regularly provides strategic advice in the development of innovation. He also sits on a number of scientific advisory boards.