To hold a patent doesn't qualify one to automagically understand the patent system and the patent process. Or in the case of this jury, to be able to redact error free concensus from the group. The fact that one person on that jury has a patent on a "Method and apparatus for recording and storing video information" is a really disturbing factor that might explain a lot on how the jury deliberated.
This. At one time I had over a dozen patents where I was one of the inventors and every time I find something new about the patent system. I've got the bonus education in having been retained as an expert witness in two patent cases, which nominally would qualify me as an expert and I find the system quite murky still. I can categorically concur that just having at patent does not make you an expert on the patent system.