Trademark Opposition: How to Challenge a Pending Application at the USPTO

The 30-Day Window That Most Applicants Don't Think About

Getting through USPTO examination is a milestone — you've survived the examiner's review, responded to any office actions, and received approval for publication. But publication is not registration. Before a trademark becomes officially registered, it spends 30 days in the Official Gazette, a weekly USPTO publication that serves as public notice of pending registrations.

During those 30 days, any person who believes they would be damaged by the registration has the right to file an opposition — a formal proceeding asking the USPTO to refuse registration. Third parties can also request a 30-day extension to oppose (and often another extension after that), giving themselves more time to evaluate and prepare. Many brand owners monitor the Official Gazette specifically to catch potentially conflicting marks before they register.

If no opposition is filed (or if extensions run out without an opposition), the trademark registers automatically. If an opposition is filed, the application is suspended pending the outcome of the proceeding.

Who Files Oppositions — and Why

The most common scenario: a company discovers through trademark monitoring that a competitor or newcomer has applied for a mark that conflicts with their existing registered mark. Rather than waiting for registration to issue and then petitioning to cancel, they oppose the application before it registers. Opposition is cheaper and faster than cancellation, and preventing registration is strategically better than having to unwind one.

The standing requirement is deliberately broad: you must have a "real interest" in the proceeding and "reasonable basis" for your belief that you'd be damaged. Courts have interpreted this generously. You don't need a registered trademark. You don't need to be in the same industry. A prior common law user, a licensee, even a person who has filed their own pending application in a conflicting mark can have standing to oppose.

The TTAB — The Court That Isn't a Court

Oppositions are heard by the Trademark Trial and Appeal Board, a federal administrative tribunal within the USPTO. The TTAB decides all opposition and cancellation proceedings. It's not a federal court — there are no judges in the Article III sense, no juries, and no live testimony in a courtroom. But it operates like one in most important respects.

TTAB proceedings involve:

• Pleadings: The opposer files a Notice of Opposition; the applicant files an Answer. Both must be specific — vague allegations are vulnerable to dismissal.
• Discovery: Both sides can take depositions, serve interrogatories, and request documents. Discovery periods in TTAB proceedings can run 6–12 months.
• Trial (on paper): No live hearing. Instead, each side submits testimony periods during which they introduce evidence through written declarations and attached exhibits. The "trial" is entirely in writing.
• Briefs: Both sides submit main briefs and reply briefs arguing the merits.
• Decision: A panel of TTAB judges issues a written decision.

The entire process typically takes 18 months to 3 years from filing to decision. Either party can appeal a TTAB decision — to the Federal Circuit Court of Appeals (on the record) or to a federal district court (where new evidence can be introduced).

Common Grounds for Opposition

Likelihood of Confusion

By far the most common ground. The opposer argues that the applied-for mark so closely resembles their existing mark — in appearance, sound, meaning, or commercial impression — that consumers are likely to be confused about the source of the goods or services. The analysis uses the same DuPont factors applied in examination: mark similarity, goods/services relatedness, trade channels, consumer sophistication, and the strength of the prior mark.

Mere Descriptiveness

The opposer argues that the applied-for mark merely describes a feature, quality, or characteristic of the goods/services and should not be registered. This is typically raised when the examiner approved the mark but the opposer believes the examiner was wrong. The TTAB makes its own independent determination.

Fraud

The applicant made a material misrepresentation to the USPTO in obtaining the application or registration — most commonly, falsely claiming use in commerce when the mark was not actually in use as of the filing date of a use-based application. Fraud claims are taken seriously but require proof of intent — innocent mistakes are not fraud.

Abandonment / Non-Use

The opposer argues that the applicant abandoned the mark through non-use or through acts that demonstrated intent to abandon. Three consecutive years of non-use creates a presumption of abandonment under the Lanham Act, though this presumption can be rebutted.

Priority of Use

The opposer claims they used the mark (or a confusingly similar mark) in commerce before the applicant — establishing superior common law rights even without registration. Priority disputes often turn on detailed documentation: invoices, advertising materials, dated photographs of the mark in use, receipts, and testimony from customers and employees.

Defending Against an Opposition

If your application is opposed, you have several options. You can answer and defend on the merits — contesting the opposer's standing, challenging their factual claims, and asserting that your mark does not conflict. You can also negotiate: many oppositions settle through consent agreements, coexistence agreements, or modifications to the goods/services description that narrow the scope of registration enough to satisfy the opposer.

Default — failing to answer the Notice of Opposition — results in judgment against you and abandonment of your application. The deadline to answer is 40 days from the filing of the Notice of Opposition.

Opposition vs Cancellation — What's the Difference?

Opposition and cancellation are the two main inter partes (adversarial) proceedings at the TTAB. The difference is timing:

• Opposition — filed during the 30-day publication window, before registration issues. Less expensive (no registration to undo) and generally faster.
• Cancellation — filed after a trademark has registered, asking the TTAB to cancel the registration. Must generally be filed within 5 years of registration for claims based on likelihood of confusion (after 5 years, many grounds for cancellation are cut off by the mark's "incontestable" status).

If you're going to challenge a conflicting mark, opposition is almost always preferable to waiting and then filing cancellation.