I think it's fairly safe to say nobody knows for sure whether the IP agreement really covers the Quark-X, what can the outcome of the lawsuit can be, regarding this IP (how does a breach of contract affect it, on one side or another?), and whether there will or won't be further lawsuits concerning this IP .
Also, there's the issue of GPT/time limits. Even if Rossi demonstrates (once again) something for all to see, the contract legalese might make it that he is not entitled to the millions