2-3 years away from a patent. I think once you file you can put on your product that it is patent pending....the key seems to be the actual filing. Once the patent is awarded then any products that come after you are subject to your patent, etc.
Also...if EPGL is up 50% over a 2 year period that is still 25% a year. Can't earn that anywhere else, so EPGL is still a great investment in my eyes. There is potential for 1000% gains if everything falls in place. I will still be here waiting. I have come to far to give up now.