I have used them for the PRCD test for several dogs. I think things have changed since the court decided you cannot patent a gene or something to that effect. Since I am not a lawyer, that stuff goes right over my head, but I am sure that is why PPG can test for PRCD and EIC and other things.
Actually, there is public information about a couple law suits underway concerning PawPrint tests for EIC and prcd. And, clear understanding of the recent supreme court opinions on DNA patenting do not apply to testing methods.