Arris hedge fund owners are not subject to the time limit and Unified fully understands that. Just as Mangrove Partners in VirnetX v. Apple did. Apples Hedge Fund filed and won and IPR against VirnetX. http://www.ipwatchdog.com/2017/11/16/ipr-petitions-virnetx-patent-apple-statute-of-limitations/id=90233/ Getting Around the IPR Statute of Limitations: Arris way out