you only need vary a couple of dimensions and its a differnt reticule etc unless they intend to sue all the Mildot rets prior to 04 etc as well which they cant
ie the abstract states teh secondary lines are less than 0.2mil a 0.3mil line would break the patent
pattents to be of any use have to be fairly specific and you also have to bother to enforce them and a company will only do that if its finacially worth it
as you say the leup one is a very simple patent claim and is the look of the ret so you can use any marks that doen give the over all look of the ret and should probably be a registered design
if a etched glass ret 2 converging lines that woulds pass the points would mean you could just raise the ret till the kill touched the lines and fire
Last edited by FGYT; 11th June 2010 at 09:04 AM.