The tail end of a tangle of inter partes reviews (IPRs) started by multiple petitions from OpenSky Industries, Patent Quality Assurance (PQA), and Intel has now produced a pair of final written decisions invalidating all claims from two patents that VLSI Technology LLC asserted in litigation against Intel. Last month, the Patent Trial and Appeal Board (PTAB) invalidated all asserted claims from the first such patent, which Intel was found to infringe by a Western District of Texas jury just over two years ago, accounting for $657M of a $2.2B damages award. Last week, the PTAB invalidated all asserted claims from the other patent found infringed, accounting for the rest of that award.