It says the application was a provisional. I can't find any applications under their name nor do they mention any patents/application in their last annual report other than the one they licensed from Rice U. Maybe they they never filed a full application because they later found the Merck patents?
With respect to 2017 application, I have looked at it yet and we don’t have QMC’s, but is there a difference between their blockchain claim and blockchain with distributed ledgers in 2019?
I don’t have enough understanding as to time table of the various evolutions within blockchain and for that matter what QMC or Dotz claimed in their patents. Could be two very different uses of blockchain for all we know. Clearly their patent was using Grahame qdots which is likely a big difference from what QMC has been developing.