About Trademark Search

Operated by Prometheus Labs, Kitchener, Ontario, Canada · hello@prometheuslabs.ca

Who runs this

Trademark Search is built and run by Prometheus Labs, a small software company in Kitchener, Ontario. We build focused tools that do one job well; this one answers a single question: does a name you want to use already appear on the U.S. or Canadian federal trademark registers?

Where the data comes from

The database holds registered and pending federal trademarks from the USPTO (United States) and CIPO (Canada), plus records that recently became inactive: millions of records in total. Automated jobs load the official USPTO daily files and CIPO weekly files, and every search runs against the records loaded at that time.

What it does not include: U.S. state registrations, common-law (unregistered) trademarks, other countries' registers, and logo or design elements. Government data can lag or contain errors, so a search here is a starting point, never the final word.

How matching works

Searches compare your name against the registers by exact text, sound-alike (phonetic) similarity, and common spelling variants. The free search shows how many similar trademarks it found and the 3 closest; the US $39 clearance report searches deeper, across every goods and services class, and lists up to 300 matches with full details. Both return factual matches from the public records. Neither is legal advice, and no result determines whether a name is available to use or register: for that, talk to a trademark lawyer or agent.

Corrections

If a record looks wrong, out of date, or is missing, email hello@prometheuslabs.ca with the name you searched and what you expected. We read every message and check data problems against the source feeds.

Contact

Everything, from support to billing to data questions: hello@prometheuslabs.ca.

Last reviewed: 9 October 2026