TMMI 's patent for TRUDEF is based off the original patents from Dr. Barnsley and Dr. Sloan from the 80s and they're listed on TMMI's main website under "FAQ" then patents issued YES they have been updated and YES they are still "enforced" through 2015.....The ones on this message board that keep complaining are the same ones that were "reimbursed" many years ago for their original investment, from an insurance policy that TMMI's new management team took out to protect their loses and their only defense is to either have a post deleted or talk down towards the company without doing their own research of calling TMMI and asking the questions. They call us "pumpers" when the truth is we are loyal,enthusiastic shareholders that hold the dream alive, just as the new TMMI management team has done by stepping in and saving this company with an complete turnaround!.