For our own reference we keep and maintain a detailed database of stevia varieties, which includes patented and non patented strains. Unfortunately we cannot share all information online, as we have exchanged variety characteristics with various organisations on a collegian basis, who have indicated they prefer this info not to be publicized online. What we can do however is refer you to some patented strains.

View: AKH-L1 PureCircle US20120090062

View: AKH-L4 PureCircle US20120090063

View: Brandle US6255557

View: Morita SF5 US6080561

View: Morita SF6 US6031157

View: Marsolais USPP10564 P