And what about juries for patent trials?

Within an LA Times article by Carol J. Williams:

In this time of double-digit unemployment and shrinking benefits for those who do have jobs, courts are finding it more difficult to seat juries for trials running more than a day or two. And in extreme cases, reluctance has escalated into rebellion, experts say. (...) More than a quarter of all qualified jurors were released on hardship grounds last year, according to court statistics.

IPBiz notes that patent cases are invariably longer than a day or two.