I'm not familiar enough with the management of Silicon Graphics to say if they specifically would be likely to litigate, but I doubt CloudFlare would take the r

I'm not familiar enough with the management of Silicon Graphics to say if they specifically would be likely to litigate, but I doubt CloudFlare would take the risk on an unexpired patent - management changes, and plenty of companies enforce patents that could do much more good than strengthening cryptography in the hunt for profit (see: the medical industry).