The university says: We have a patent, and Apple is infringing. To you, that indicates it is a legitimate claim. Apple will obviously reply "no, we are not". That would then be clear evidence that they are talking ********.
I did underline "appears" to be a legitimate claim, because UB claims the technology in question has been developed by one of their professors, and they have filed a copy of the patent as Exhibit 'A', as opposed to some patent troll staking a claim on some purchased portfolio of patents.
That's not to say that claims by patent trolls are necessarily less legitimate.
It's entirely possible APPLE might respond: "We've done our reasonable due diligence, and have not willfully infringed". Which would make some difference. But I'm inclined to think that APPLE probably knew, or could have known. If UB's claim turns out to be legit, it would be in APPLE's best interest, if only for PR purposes, to just settle this.
Let's see how this progresses.