What Is A Section 15 Declaration And Should You File One?

Trademark registration is not a one-time task. After approval, owners must continue using the mark, meet USPTO deadlines, and maintain accurate registration details. In 2026, the USPTO Trademark Dashboard reports that post-registration renewal pendency averages 107 days, compared with a current fiscal-year target of 90 days, underscoring why early maintenance planning matters.

A Section 15 declaration is one optional step that may strengthen an eligible trademark after five years of continuous use. This guide explains what it means, who qualifies, when to file, and how it differs from required maintenance filings.

What Is a Section 15 Declaration?

A Section 15 declaration is a sworn statement filed with the USPTO after a registered trademark has been used continuously in commerce for at least five years.

In simple terms, it tells the USPTO that your mark is still in real use and that you want to claim the added benefit of incontestable status.

This filing comes after trademark registration services. It is not part of the first application and is different from a trademark search, a USPTO trademark search, or a renewal filing.

What Problem Does It Solve?

A federal trademark registration needs ongoing maintenance. The USPTO says owners must continue to use their marks in commerce and file the required documents at regular intervals to maintain registration benefits.

A Section 15 filing can strengthen the registration record when the brand has stayed active, accurate, and important to the business over time.

What Is A Section 15 Declaration Of Incontestability?

A Section 15 declaration of incontestability is the formal filing used to claim incontestability for an eligible registered mark.

The phrase sounds technical, but the idea is simple. You are asking the USPTO to acknowledge that your mark qualifies for stronger status because it has remained in use and meets the legal conditions.

Under federal law, the owner’s right to use a Principal Register mark may become incontestable after five consecutive years of continuous use if the required affidavit is filed and the other conditions are met.

Section 15 In Simple Terms

Think of trademark registration as the foundation. Section 15 can add a stronger layer for a mark that has proven continued use over time.

It does not add new goods or services, fix an inaccurate registration, replace maintenance filings, or make the mark impossible to challenge.

What Does Trademark Incontestability Mean?

Trademark incontestability means a qualifying registration can become stronger evidence of your trademark rights.

When a mark becomes incontestable, federal law gives the registration stronger evidentiary value regarding the mark’s validity, ownership, and exclusive right to use it for the listed goods or services. However, that right still has limits and defenses.

What Incontestability Does Not Mean

An incontestable trademark is stronger, but it is not untouchable. It may still face challenges or defenses based on issues such as:

• Fraud

• Abandonment

• Fair use

• Misrepresentation of source

• Certain prior rights

• Genericness

• Functionality

• Some nonuse issues

Federal law also allows certain cancellation claims even after the usual five-year period.

Section 15 Trademark Requirements Checklist

A Section 15 filing should be accurate before submission. Use this checklist before moving forward.

If your registration covers multiple goods or services, review each item carefully. For help understanding how goods and services are grouped, see Trademark Engine’s guide to trademark classes.

Self-Audit Before Filing

Before filing, ask:

1. Is the owner's name still correct?
2. Are all listed goods or services still active?
3. Has the mark stayed visually and commercially consistent?
4. Is the registration on the Principal Register?
5. Are there any pending disputes?
6. Do you have records showing use over time?

Should I File A Section 15 Declaration?

You should consider filing if your mark is eligible and the brand still matters to your business.

For many owners, the filing is worth considering when the trademark protects a core business name, product, service, or store identity. If you plan to keep using the mark, incontestability may support a stronger long-term position.

You May Be A Good Candidate If:

• Your mark is central to your business.

• You have used it continuously for five years.

• You still sell the listed goods or services.

• Your registration record is accurate.

• You are already preparing the required Section 8 filing.

You May Need To Pause If:

• You stopped using the mark for some goods or services.

• Your company name or ownership has changed.

• The mark is on the Supplemental Register.

• The registration lists outdated products or services.

• You have a pending dispute.

If ownership changed because of a sale, merger, rebrand, or restructuring, review Trademark Engine’s page on trademark ownership transfer before filing.

When Can I File A Section 15 Declaration?

You can generally file after five consecutive years of continuous use following registration if the mark still meets the other requirements.

The timing often overlaps with Section 8. For many non-Madrid U.S. registrations, the USPTO requires a Section 8 declaration between the fifth and sixth years after registration, and the first Section 8 and Section 9 renewal-related filing between the ninth and 10th years.

For a broader overview of the maintenance timeline, see Trademark Engine’s guide on how long a trademark lasts.

Can I File Before Five Years?

No. The five-year continuous-use period is central to the filing. Filing too early can create problems because the declaration would not match the legal requirements.

What Is The Difference Between Section 8 And Section 15?

Section 8 and Section 15 are often filed in the same window, but they do different jobs.

If your filing deadline has already passed or is close, review Trademark Engine’s guide on what happens when a trademark is expiring or a deadline is missed.

Can I File Section 8 And Section 15 Together?

Yes, you can often file a combined Section 8 and 15 declaration if the mark qualifies.

The USPTO says that if a mark qualifies for incontestability between the fifth and sixth years after registration, the owner can combine the Section 15 and Section 8 filings using the combined form.

This can be efficient, but it is not automatic. You still need to check both sets of rules before submitting.

How Much Does It Cost To File A Section 15 Declaration?

USPTO trademark fees are generally charged per class. The fee information below is current as of the USPTO fee schedule, last revised on July 1, 2026.

When Can Extra Fees Apply?

Extra fees may apply when:

• You file during a grace period.

• You delete goods or services after certain maintenance filings.

• You need to respond to a USPTO office action.

• Your registration covers multiple classes.

• You need help reviewing ownership, use, or filing accuracy.

For broader filing cost planning, review Trademark Engine’s trademark registration cost guide.

How Do I File A Section 15 Declaration With The USPTO?

You file by reviewing your registration, confirming eligibility, preparing the declaration, and submitting the correct USPTO maintenance form.

A simple process looks like this:

1. Find Your Registration Record: Confirm the registration number, owner, filing basis, and goods or services.
2. Check the Register: Make sure the mark is on the Principal Register.
3. Confirm Continuous Use: Review records showing five years of use in commerce.
4. Review Goods and Services: Remove goods or services that are no longer in use when required.
5. Check for Disputes: Confirm there is no final adverse decision or pending proceeding.
6. Prepare the Filing: Use the correct USPTO form, or the combined Section 8 and Section 15 form if eligible.
7. Monitor The Result: Check the registration status after filing.

You may also consider trademark monitoring after registration to stay aware of new filings that may conflict with your mark.

Common Mistakes To Avoid Before Filing Section 15

Avoid these common filing mistakes:

• Filing before the five-year continuous-use period is complete

• Filing for goods or services no longer in use

• Assuming Section 15 replaces Section 8

• Filing while ownership records are outdated

• Treating incontestable status as complete immunity

• Ignoring a USPTO office action after filing

• Failing to save proof of continued use

Conclusion

A Section 15 declaration can be a useful next step for an eligible trademark that you plan to keep using. Before filing, confirm that your mark is on the Principal Register, has met the five-year use rule, remains in use for the listed goods or services, and has no pending proceeding.

Start with Trademark Engine’s free trademark search if you are still reviewing your brand protection plan.