>Also, the claim that it's an "open-source" mask is somewhat soured by the fact that they appear to have patented it. The article did not say that the mask its

>Also, the claim that it's an "open-source" mask is somewhat soured by the fact that they appear to have patented it. The article did not say that the mask itself was patented. They may have patented a small component (probably the copper voodoo stuff which may or may not actually work) and are giving people freedom to print the mask, patented component included, in the time of crisis. It's ethical business dealing. You get to save lives and make a buck off the IP later. Win/win.