Huh? Afaik, nothing has changed on the patent front....
ATC have *filed* for a provisional patent for a total of 3 times. 2014, 2017 and again in 2018; none of these have been accepted. Sure, this could change at any moment, but I am not worried. I trust Management/Orelogy to make the required changes to their flowsheet if any problems arises.
http://pericles.ipaustralia.gov.au/ols/auspat/quickSearch.do?queryString=altech chemicals&resultsPerPage=
DYOR , Cheers.