U.S. Trademark vs International: When to File Where — and in What Order

Start With the U.S. — Then Use the 6-Month Window

For U.S.-based brands, the standard playbook is: file at the USPTO first, then use the Paris Convention priority window to extend internationally. The Paris Convention is a treaty signed by 180+ countries that allows a trademark owner to claim the filing date of their home-country application as the priority date in any other member country — provided the foreign applications are filed within 6 months of the home filing.

This means your U.S. filing date protects you globally, for 6 months, while you evaluate which international markets are worth the cost of filing. Any trademark application filed during that 6-month window will be treated as if it was filed on the same day as your U.S. application — even in countries where a competitor filed the same mark after your U.S. filing date.

Missing the 6-month window doesn't prevent you from filing internationally — but it means your international applications get their actual filing date as their priority date, not your U.S. date. In practice, this rarely matters unless there's a competing application filed between your U.S. filing date and your international filing date. But it's a risk, and the Paris Convention window exists precisely to eliminate it.

U.S. vs. International: Key Differences

Use Requirements

The U.S. trademark system requires actual use in commerce — either as a condition of registration (use-based applications) or within a specific timeframe after registration (intent-to-use applications). You cannot maintain a U.S. trademark registration purely as a defensive filing without ever using the mark commercially.

Most other jurisdictions do not have this requirement. You can register a trademark in the EU, UK, China, or Japan without ever selling a single product under that mark. This makes the U.S. system more demanding to maintain, but also more reliable: U.S. registrations represent actual commercial use, which is harder for competitors to challenge on non-use grounds.

Examination Approach

The USPTO examines applications on both absolute grounds (is the mark inherently registrable?) and relative grounds (does it conflict with existing marks?). If a USPTO examiner finds a conflicting prior registration, they will cite it and refuse the application — forcing the applicant to either argue around the conflict or abandon.

The EU system (EUIPO) examines only absolute grounds. It doesn't search for conflicting prior marks and won't refuse an application on relative grounds — that's left to trademark owners to handle through the opposition process. This makes EU examination faster but puts more burden on monitoring and opposition.

Litigation Environment

The U.S. is the world's most active trademark litigation jurisdiction. Trademark cases in U.S. federal courts can result in significant damages, attorney's fee awards, and injunctive relief. A U.S. registration is the most powerful enforcement tool available to trademark owners, and U.S. courts have global reach in cases involving U.S. operations or commerce.

The Right Filing Order for Growing Brands

Stage 1 (Pre-launch): File a U.S. application. Use TEAS Plus ($250/class) if your goods/services fit the pre-approved ID Manual descriptions. Run a clearance search first.

Stage 2 (Within 6 months of U.S. filing): Decide which international markets need coverage now. File EU and/or Madrid Protocol designations within the Paris Convention window to lock in your U.S. priority date.

Stage 3 (After U.S. registration): Use the issued U.S. registration as the base for any additional Madrid filings. An issued registration (rather than a pending application) eliminates the central attack risk for 5 years post-international registration.

Stage 4 (Ongoing): Add countries as your business expands through subsequent Madrid designations. Review class coverage annually. File renewals on schedule.

When International Comes First

Non-U.S. brands entering the American market reverse this sequence: they file in their home country first, then use the Paris Convention window to file in the U.S. The analysis is the same — home country first, international within 6 months — but the starting jurisdiction changes.

For brands with genuinely simultaneous multi-market launches, the Paris Convention window still applies from whichever jurisdiction files first. The key is to identify the "anchor" filing that establishes the global priority date and make sure it happens before commercial launch in any market.