A clean USPTO search does not mean a trademark name is free

The workload

Before naming a product, a founder's first and cheapest step is searching the United States Patent and Trademark Office's own trademark search tool, successor to the retired Trademark Electronic Search System, TESS, for identical or similar marks already registered or pending in the relevant class of goods and services. That search takes minutes and is free. The USPTO's own guidance on comprehensive clearance searching describes more to check before filing: the weekly Trademark Official Gazette, U.S. state trademark and business registries, domain-name registries, WIPO's Global Brand Database and Madrid Monitor, the EUIPO's TMview, and a general internet search for common-law use of the same or a similar name.

What the documents show

The USPTO states, verified, that its federal search system covers only federally registered and pending trademarks. It states separately that common-law rights, built simply by using a mark in commerce without registering it, may affect the rights a federal registration provides if the common-law use predates it, and that these marks will not appear in the federal database at all. The agency's guidance recommends searching the internet for third-party use and, for a thorough result, working with a screening service or an experienced attorney, stating plainly that an attorney can provide a clearance search and interpret the results. That is the USPTO's own description of the limits of its free tool.

The operating cost

The federal search itself costs nothing but time. The USPTO's guidance does not price a professional clearance search or an attorney's interpretation; screening services and clearance opinions are priced by the provider, not the agency, so no figure can be stated here from this primary source. What the page does establish is the floor: a founder who searches only the federal database and skips the common-law and state-registry checks it recommends has done the free step, not the comprehensive one the agency describes.

The stop condition

The USPTO's text does not say a clean search result clears a name for use; it says close to the opposite, that its registered-and-pending index is one part of a comprehensive search and common-law use elsewhere can still create a conflict. The workload can reasonably stop, per the agency's own graduated language, once the federal database and the Gazette are checked at minimum; anything beyond that, including an attorney's opinion, is a judgment call scaled to how much is riding on the name, since the page sets no fixed threshold for a complete search.

• Has the search covered common-law use, an internet search for the same or a similar name, and not just the federal database?
• Does the intended class of goods or services match how a similar registered mark is classified, since a different class can mean no real conflict?
• Is the market and expected size large enough to justify a paid clearance search or an attorney's opinion before filing?

A free federal search is a real and necessary first step; the USPTO's guidance is explicit it is not the last one, and a founder who stops there relies on the agency's index for a conclusion it says the index cannot support alone.