- United States Patent, “Adhesion system for a climbing vehicle”, P. Ward and D.K.Liu, No.: US9902447B2; Date of Patent: 27 Feb. 2018; Duration: 17 July 2014 – 14 July 2034.
- Australian Patent, “Adhesion system for a climbing vehicle”, P. Ward and D.K.Liu, No.: 2014289974; Date of Patent: 21 June 2018; Term of Patent: 17 July 2014 – 14 July 2034
- M. Carmichael and D.K.Liu, “Robotic exoskeleton apparatus”, Australian Patent application number: 2013904101, filing date: 24 Oct 2013; International (PCT) patent application No. PCT/AU2014/001010
