As pointed out last week Japanese innovators have quickly recognized Inter Partes Review (IPR) as a cost effective tool to drive patent disputes to a timely resolution. European patent challengers have also recognized the benefits of IPR. Given the significant use of patent oppositions in Europe, the influx of European patent challengers is not surprising.
The chart below identifies the European entities (and their subsidiaries) actively involved in IPR proceedings. (Click to Enlarge)