CNIPA (China IP Office)
Official China trademark/patent office
Legal & IP Protection
Trademark, patents, contracts, and intellectual property protection for China trade
Search and register trademarks for your market
WIPO Global Brand Database
Global trademark search database
USPTO Trademark Search
US trademark search and registration
Justia Trademarks
US trademark search database
Trademarkia
Global trademark search and filing assistance
Marcaria
International trademark registration service across 190+ countries
WIPO Madrid Monitor
Track international trademark applications under the Madrid System
TMview (EUIPO)
Free global trademark search including Chinese trademarks