This is supplementary data of the ST.27 Category L (IP right review request). This category is a group of events related to a request for a review of an IP right after its grant for any type of IP right covered by Category F. It includes, for example, a request for a post-grant opposition, re-examination, limitation, reissue, surrender, or invalidation. It also includes when such a request was inadmissible, rejected or withdrawn. The events in this category may move an IP right from the grant stage or the termination likely/termination stage into the post-grant challenge stage.