Everyone here knows that concerning the 336 no essential prior art has successfully been brought up by the defendants even after all those reexams.
One main issue of international patent law is that after a patent has been granted like the 336 all amplifications or narrowings are impermissible.
The only thing which is allowed and sometimes required is to specify an expression more precisely.
For the 336 that can only mean, it is the same as it has been with the same infringers and if I may say this, it is even stronger because all those attacks aren't possible any more.
If an infringer cannot come up with an absolutely new prior art document then he not only likely but defintely will have any chance of a new reexam.
I hope this helps to clarify the issue and shows in what good position the 336 is.
To all the best
Jerry