[nl]

This is strange.

The total number of cases seems to line up between the two reports (5700 in 2015, not including PTAB).

But only 2281 cases involving NPEs were decided between 1996 and 2015[1]. If 66% are filed by NPEs, then this should be much more. Unless the vast majority are dropped I guess?

[1] https://www.pwc.com/us/en/forensic-services/publications/ass..., page 16

[esquivalience]

Yes. Cases issued will not correspond to cases decided, since many cases settle. And there is a long time-lag from starting a case to ending it with a judgment.

[Operyl]

I guess a lot of cases involve settling before getting to court maybe?