I think that's incorrect. All the challenged claims of 998 were ruled for the plaintiff - thus suggesting all claims that impact value of the patent to wddd
Patent '856: final decision issued last week. claim 1 killed. This was the only claim from '856 in the law suit and in the IPR
Patent '558: final decision issued today. all claims killed except 5 and 7
Patent '998: final decision issued today. all claims killed
Now, there is another IPR for '998, although I don't know why and I don't know what the use of a positive ruling on it would be or how that would come about.