"As such, there may be very little prior art in serving composite raster maps with data overlay at 2001".
I remember going to a lecture back in the early '90s about how mapping of underground services was being improved by overlaying gas, electricity, water, etc. details over maps so conflicts could be seen. Was so advanced at that time that the power company was able to identify 'at risk' properties such as those occupied by people with dialysis, heart machines and so on.
Not the same theme but still using the same basic premise. Not that this will affect the patent lawyers of course. How they can justify some of the patents issued is way beyond me.