EUIPO is the official EU trade mark and design office sellers use to search TMview and file one EUTM covering 27 member states.

Fangxin is a Shenzhen IP agency, not a trademark office, that files US, EU and China marks while official fees stay with each registry.

The Japan Patent Office’s J-PlatPat is the free official search sellers use to clear a Japanese trademark before filing and joining Amazon.co.jp Brand Registry.

Legal Space was a Chinese US trademark class lookup, but on 2026-09-06 its HTTPS site reset, so sellers should use the USPTO instead.

Stonebridge is a China-facing IP and EU/UK tax agency, not a trademark office; sellers hire it for marks, VAT and EPR.

The UK Intellectual Property Office is the official UK trade-mark registry sellers use to search, file and renew marks for Amazon UK Brand Registry.

USPTO Trademark Search and Trademark Center are the official U.S. portals sellers use to clear a brand name and file for Amazon Brand Registry.