RE: Background reading: not much new but may be of interest to some!20 Feb 2020 07:33
Just to +1 ddubya.
There's no suggestion that Samsung can't make cad free dots. They and many other institutions have been able to for years. The question is over the mass production process. Samsung couldn't mass produce at all until Hansol, Nanoco, Nanosys and QD Vision were put in a bag, shaken up and a new process mysteriously pulled out that they have never revealed any information on publicly. However, they don't need IP covering that process. They could have chosen not to protect it. Would be a strange move but they just need to be not using anyone else's.
Just to be super pedantic. I think Nanoco can indeed protect CFQD. Not because it's patented but didn't they trademark "CFQD" as a brand name? No one can patent cadmium free quantum dots. Just how they make thm.