Search the official trademark database in your country
Search the trademark office website for registered marks and pending applications
Search for the exact name, logo, slogan, and similar variations
Check related classes of goods and services
Search common law sources such as business directories, websites, and marketplaces
Search state or regional trademark databases if available
Search international trademark databases if the mark may be used globally
Review results for active, expired, abandoned, and pending marks
Check whether the mark is used in commerce even if not registered
Consult a trademark attorney for a clearance search and legal opinion