Trademark Opposition at the TTAB: What Startups Must Do When Someone Challenges Their Application

You navigated the examination process. Your trademark application cleared the examining attorney's review for likelihood of confusion, descriptiveness, and specimen compliance. You think the hard part is over. But there is one more hurdle most founders never see coming: the 30-day publication window.

Once the USPTO approves your mark for publication, it publishes your trademark in the weekly online Trademark Official Gazette. This triggers a 30-day period during which any member of the public who believes they would be harmed by your registration can file a Notice of Opposition with the Trademark Trial and Appeal Board (TTAB). That filing starts a formal adversarial proceeding that can take over a year to resolve and cost tens of thousands of dollars in legal fees.

Most founders do not know this window exists until they receive a notice from the TTAB. In this guide, we walk through what the publication period is, why opposition filings are rising, the most common grounds challengers use, the TTAB process timeline and costs, settlement options, and how to decide whether to fight or rebrand. If you are still working through the examination phase, our companion guide on trademark application mistakes that trigger USPTO office actions covers how to avoid the most common pre-publication pitfalls.

Why Trademark Oppositions Are Becoming More Common

USPTO trademark filing volumes remain near record highs, which means more applications are competing for the same namespace. When more marks enter the system, collisions become more likely — and brand owners are increasingly using the opposition process to protect their existing registrations. According to the USPTO's TTAB dashboard, the Board received approximately 1,716 new opposition filings in Q1 2025, rising to 2,051 by Q3 2025, and continuing at over 2,000 per quarter into 2026. New cancellation petitions have tracked similarly, exceeding 2,000 per quarter in early 2026.

For startups, the practical implication is clear: the odds of your application being opposed are higher than they were five years ago. If you have not invested in a thorough clearance search before filing, the publication window is when that gap catches up with you.

What the 30-Day Publication Period Is and Why It Matters

After a USPTO examining attorney approves your application, your mark is not registered yet. Instead, the USPTO publishes it in the Trademark Official Gazette, which gives the public an opportunity to review newly approved marks and object if necessary. As the USPTO explains, publication begins a 30-day period during which "any member of the public who thinks they'll be harmed by the registration of your trademark may oppose it." A would-be opposer can also request an extension of time to oppose — but only if they file within the original 30-day window. As the USPTO's opposition period page notes, you cannot "piggyback" onto someone else's extension.

If no one opposes your mark during this window, the application proceeds to the next stage. For use-based applications (Section 1(a)), the mark registers. For intent-to-use applications (Section 1(b)), the USPTO issues a Notice of Allowance, and you must file a Statement of Use with a specimen before the mark can register. It can take three to four months from publication to receive official notification that your mark has registered or moved to the next stage.

The key insight for founders: the 30-day publication window is your last checkpoint before registration. If you have not already done a comprehensive clearance search — covering the USPTO database, state registries, common-law sources, and phonetic equivalents — do it during the examination phase, not after publication. By the time your mark publishes, any conflict you missed becomes a public invitation for opposition.

Common Grounds for Opposition

A Notice of Opposition must establish two things: that the opposer has standing (a real interest in the outcome) and an available legal ground for opposition. The USPTO's guidance on initiating proceedings requires that the pleading contain "a short and plain statement of the claim showing that the [filer] is entitled to relief." Here are the most common grounds we see in practice:

Likelihood of Confusion (Section 2(d))

This is by far the most common ground for opposition. The opposer argues that your mark is too similar to theirs — in sound, appearance, meaning, or overall commercial impression — and that the goods or services are related enough that consumers would be confused about the source. The TTAB evaluates likelihood of confusion using the DuPont factors, which include similarity of the marks, relatedness of the goods or services, overlap in trade channels, and the strength of the opposer's mark. Notably, the marks do not need to be identical, and the goods do not need to be in the same Nice classification class. For a detailed discussion of these grounds, see Cohn Legal's overview of opposition grounds.

Priority (Earlier Use or Earlier Filing)

U.S. trademark law grants rights to the first party to use a mark in commerce, even without federal registration. An opposer can claim that they have prior common-law rights based on earlier use in commerce or an earlier-filed application. If the opposer can show they were using the mark before your application's priority date, they may have a strong priority claim — especially in overlapping geographic markets or trade channels.

Descriptiveness and Genericness

An opposer may argue that your mark is merely descriptive of the goods or services and therefore not entitled to registration on the Principal Register — unless you can prove acquired distinctiveness (secondary meaning). A more aggressive ground is genericness: if the mark is the common name for the goods or services themselves, it cannot function as a trademark at all. The examining attorney may have already evaluated descriptiveness during examination, but an opposer can raise it again with different evidence or arguments.

Fraud on the USPTO

An opposer can allege that you made false or misleading statements in your application — for example, claiming use of the mark in commerce when you were not actually selling the goods or services in those classes. Fraud is a serious allegation that, if proven, not only defeats the application but can also jeopardize other registrations you hold. The standard for fraud was tightened after the Federal Circuit's 2009 decision in In re Bose, which requires that the misstatement be made with intent to deceive, but it remains a potent ground — particularly when an applicant has filed specimens that do not match the goods or services listed.

Other Grounds

Opposers can also raise dilution (if they own a famous mark), false suggestion of a connection, disparagement, geographic misdescriptiveness, and claims that the mark is merely ornamental or functional. Each requires specific evidence and legal argument, but the TTAB will consider any valid ground under the Lanham Act.

The TTAB Process: Timeline, Procedure, and Costs

A TTAB opposition is, in practical terms, a federal administrative litigation. It follows rules codified in the TTAB Manual of Procedure (TBMP) and has a structure that mirrors civil litigation. Here is what the process looks like:

1. Notice of Opposition and Answer

The opposer files a Notice of Opposition with the TTAB, which sets out the grounds and basic facts. The TTAB issues an "institution order" that sets the procedural schedule. You (the applicant) must file an Answer within 40 days of the institution order date. The Answer must respond to each numbered paragraph of the Notice — admitting, denying, or stating lack of knowledge. Missing this deadline can result in a default judgment against you, meaning your application is abandoned. According to procedural guides for TTAB oppositions, the Answer can also include affirmative defenses and counterclaims — including counterclaims to cancel the opposer's registration.

2. Discovery

After the Answer, the parties enter a discovery period that typically lasts approximately 180 days. Both sides must serve initial disclosures under FRCP 26(a)(1), identifying witnesses, documents, and other information they may use to support their claims. During discovery, each party can serve interrogatories, document requests, and requests for admission, and take depositions of fact witnesses and experts. Discovery is often the most expensive phase of a TTAB proceeding. While the TTAB operates with lower volume and less complexity than federal court litigation, the costs can still be significant — ranging from $50,000 to $250,000 or more for a fully litigated opposition, depending on the complexity of the issues, the number of depositions, and whether expert testimony is involved.

3. Trial Phase

After discovery closes, the case moves to a trial phase. Unlike a courtroom trial, TTAB trials are conducted primarily through written testimony. Each party submits testimony by deposition or written declaration, along with exhibits. The opposing party then has an opportunity to cross-examine the witness at an oral deposition. After all testimony is submitted, each party files a brief, and the case is submitted to the administrative trademark judges for a decision. The TTAB's pendency data shows that final decisions in trial cases take an average of approximately 16 weeks from the ready-for-decision date — but the entire process from filing to decision often spans 18 to 24 months or more.

4. Motion Practice and Settlement

At any point during the proceeding, either party can file motions — including motions to dismiss, motions for summary judgment, and motions to compel discovery. Summary judgment motions are common and can resolve the case without a full trial if one party can show that there is no genuine dispute of material fact. Many oppositions also settle before reaching the trial phase, often through coexistence agreements or consent arrangements (discussed below).

Settlement Options: Coexistence Agreements, Consent, and Narrowing

Not every opposition needs to be fought to a final decision. In fact, many oppositions settle — and settlement can be the smartest outcome for a startup that wants to preserve its brand while avoiding the cost and uncertainty of full litigation. Here are the three most common settlement structures:

Coexistence Agreements

A coexistence agreement is a contract between two trademark owners in which each agrees to terms that allow both marks to coexist in the marketplace without confusion. Typically, this involves agreeing to use different trade dress, different channels of trade, or different geographic territories. The agreement may also include restrictions on how each party uses its mark — for example, agreeing not to expand into certain product categories. Coexistence agreements can be persuasive to the TTAB: if the opposer withdraws the opposition based on a coexistence agreement, the application can proceed to registration.

Consent Agreements

A consent agreement is similar but narrower: the opposer simply consents to the registration of your mark, often with specific conditions. The TTAB gives weight to consent agreements but does not automatically approve registration merely because the parties consent. The Board still evaluates whether the consent, together with any restrictions, eliminates the likelihood of confusion. A well-drafted consent agreement that includes meaningful restrictions on goods, services, or trade channels is more likely to be accepted by the TTAB than a bare consent with no conditions.

Narrowing Goods or Services

If the opposition is based on likelihood of confusion, you can sometimes resolve it by narrowing the scope of goods or services in your application. For example, if the opposer sells software for healthcare providers and you originally identified "downloadable software" broadly, you might amend your identification to specify "downloadable project management software for construction companies." This narrows the overlap and can eliminate the likelihood of confusion — particularly if the parties operate in different industries. This approach often works best when combined with a consent or coexistence agreement.

When to Fight vs. When to Walk Away

Deciding whether to litigate an opposition or abandon the mark and rebrand is one of the most consequential decisions a startup founder can face. Here is how we think about it:

Fight when: Your mark is central to your brand identity, you have invested significant marketing resources, the opposer's claim is weak (e.g., the marks are not actually similar, or the goods are clearly unrelated), or you have priority. If your clearance search was thorough and you are confident in your position, fighting may be worth the cost.

Settle when: The marks have some overlap but you can live with restrictions — for example, narrowing your goods or services, agreeing to different trade dress, or limiting geographic scope. Settlement preserves your investment in the brand while avoiding the cost and uncertainty of full litigation. A coexistence agreement that lets you keep your mark in your core market is often a better outcome than a year of litigation with an uncertain result.

Walk away and rebrand when: The opposer has clear priority, the marks are genuinely confusingly similar, your goods or services overlap significantly, and the cost of litigating exceeds the cost of rebranding. Rebranding early — before you have built significant brand equity — is often cheaper than fighting a losing opposition. The cost of a rebrand at the seed stage (new name, new logo, updated website, revised marketing materials) is typically a fraction of the $50,000 to $250,000 you might spend litigating a TTAB opposition — and far less than the cost of litigating and losing.

The decision should be driven by a clear-eyed assessment of the strength of your legal position, the commercial value of the mark to your business, and the total cost of each path. This is not a decision to make alone — an experienced trademark attorney can assess the opposer's likelihood of success and help you weigh the trade-offs. For a broader framework on building a trademark strategy that minimizes these risks from the start, see our guide on why modern businesses need a deliberate trademark and brand protection strategy.

Actionable Next Steps

If your trademark application has been approved for publication — or if you have already received a Notice of Opposition — here is what we recommend:

1. Monitor the Official Gazette. Set up a watch service or have your attorney monitor the Trademark Official Gazette for your mark. You need to know the moment your mark publishes so you can track the 30-day window. If you are already past publication and have received a Notice of Opposition, do not ignore the 40-day Answer deadline — missing it can result in a default judgment against you.
2. Assess the opposer's claims immediately. Review the Notice of Opposition with counsel to evaluate the strength of each ground. Is the opposer claiming likelihood of confusion, priority, descriptiveness, or fraud? How similar are the marks, and how related are the goods or services? The strength of the opposer's claim should drive your settlement vs. litigation strategy.
3. Explore settlement early. Many oppositions settle within the first few months. If the overlap is narrow enough that a coexistence agreement or narrowed goods description could resolve the dispute, pursue settlement before incurring discovery costs. The earlier you open a settlement dialogue, the more options you have.
4. Prepare your Answer with care. If you decide to contest the opposition, your Answer must respond to every numbered paragraph of the Notice. This is also your opportunity to raise affirmative defenses and, if appropriate, counterclaim to cancel the opposer's registration. A well-pleaded Answer can shift the leverage in the case.
5. Budget realistically. If the case proceeds to discovery and trial, understand the cost range before committing. A fully litigated TTAB opposition can cost $50,000 to $250,000 or more. If that exceeds the value of the mark to your business — or the cost of rebranding — the economic decision may be clear.
6. Decide whether to fight or rebrand based on commercial reality. The strongest legal position does not always justify the cost of litigation. If rebranding at your current growth stage is cheaper than litigating — and the opposer's claim has merit — walking away may be the better business decision. For guidance on long-term trademark maintenance once you do register, see our article on why trademark lifespan and renewals matter for serious brands.
7. Get experienced counsel involved immediately. The TTAB has strict procedural rules and deadlines. An attorney who understands TTAB practice can help you avoid procedural traps, evaluate settlement options, and build a strategy that aligns with your business goals — not just your legal position. The cost of early consultation is a fraction of the cost of a procedural misstep in an opposition proceeding.

A trademark opposition is not the end of your brand — but it is a fork in the road. The founders who navigate it successfully are the ones who understand the process, assess their options clearly, and make strategic decisions based on both legal strength and commercial reality. The ones who struggle are the ones who panic, ignore deadlines, or litigate reflexively without understanding the cost. Whether you fight, settle, or rebrand, make the decision deliberately — with the right information and the right counsel.