But why 3 words? Why not 4? Here is crazy idea: take the standard long/lat system and trim it down to numbers that can point to any 20m2 square in the world.

But why 3 words? Why not 4? Here is crazy idea: take the standard long/lat system and trim it down to numbers that can point to any 20m2 square in the world. Now translate each number to two words. Now you have a much simpler 4-word system that can be translated back to the standard system. Furthermore, since you use 4 identifiers instead of 3 you may be able to exclude many similar sounding words. Now, is this covered by their patent?