IP Protection Portal (IPP)
Quick answer
A marketplace's dedicated system where rights holders verify their identity and register IP rights once, then file complaints against infringing listings under that verified account.
Alibaba's IPP (covering AliExpress, Alibaba.com, and 1688) and Temu's IP Protection Portal follow this model, unlike the per-report forms of Etsy or eBay. Verification takes days but subsequent complaints process faster and build a repeat-infringer record.