Patrick H.M. Loh is Chairman of Singapore Link Sciences Pte Ltd, Premium Herb International Pte Ltd and Dongman Agro Pte Ltd. He is appointed an Advisory Board Member at the Centre for Governance & Sustainability of the NUS Business School.

As a practicing plant scientist, he is one of the early pioneering bio-entrepreneurs in Singapore who has successfully established the commercial application of biological and molecular techniques to plant and crop improvements in the agro-based industries in the ASEAN region. With effect from October 2021, he has been appointed Research & Development Scientific Advisor to Panasonic Factory Solutions Asia Pacific in Singapore.

He is also a Professor of Western Australian State Agricultural & Biotechnology Centre (SABC) and the Centre for Crop & Food Innovation (CCFI), School of Veterinary & Life Sciences, College of Science, Health, Engineering & Education. He is an Advisory Board Member of Murdoch Business School, College of Arts, Business, Law & Social Sciences, Murdoch University, Western Australia.

A former Adjunct Professor of Lee Kong Chian School of Business, SMU, he is currently a Professor at the College of Lifelong and Experiential Learning; and the School of Science and Technology at SUSS. He is also the Board Director of the Murdoch Singapore Pte Ltd.