Dear goodness. And there are tens if not hundreds of people involved in trying to prove/disprove this case and they're all getting some hefty money. What a waste of human intellect and time.
The Economics of Spam: http://pubs.aeaweb.org/doi/pdfplus/10.1257/jep.26.3.87
The court room climate control costs would likely be dominated by energy expended for every involved individuals' commutes, which would likely be dominated by the opportunity cost of all of those individuals doing something more productive (if you want to go that far)
Unfortunately, the purpose of human intellect and time has become to get more money, so what they're doing is by definition not a waste, but the only possible outcome.