The US patent doesn't mean much, IMO.
The important patent is the WIPO patent that would prevent UNI from manufacturing and selling DR-70 in India without paying Radient any royalties.
There are currently no patents that prevent UNI from doing this, but in the UNI Agreement, they agree to pursue and prosecute the patent apps. It's odd that UNI did not pay the renewal fee for the European patent app in October. Is that evidence that the UNI deal is going sour?
The US patent might be important if Gartner paid for a license that let him manufacture DR-70. But even then, I think the FDA would shut Gartner down the same way they shut down 23andMe and all the other DNA Test vendors.