It's a bit of a confusing sentence IMO, because it can be read 2 ways. One way would be, trial of actions for causes thereafter arising, meaning trials thereafter arising and the other way could be read as for causes thereafter arising, meaning infringment thereafter arising. Either way WDDD is covered in the case against Activision, but as to future lawsuits I'm not sure if they are limited by the cert date or not. The USPTO is fixing it all the way back to the original issued date, they do not state it's fixed back to the cert date, which would make it seem valid for the whole time, like I wrote, it's a bit confusing to me as far as future lawsuits are concerned.
35 USC 254/255 Every such patent, together with such certificate, shall have the same effect and operation in law on the trial of actions for causes thereafter arising as if the same had been originally issued in such corrected form.
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