This certainly is the first I've heard that patents are in question. If in fact they must be resolved, I doubt the outcome of the trial would change, but some of the revenue may go to the holders of the patent NWBO is infringing on. I'm sure it can be resolved, but it may take some time to do so.
Looking at the company, it appears to be headquartered where NWBO had been, so it's reasonable to believe they had worked together at some point, and a principal was named on one of the patents, so clearly they knew one another.
I'm certainly no expert at these things, but I cannot believe that an FDA approval will be delayed by a patent dispute. I'm more inclined to believe that at some point this will be settled, and NWBO will give up some of the earnings from vaccine sales.
Gary