Trademark Opposition: How to Challenge or Defend a Mark at the TTAB
A trademark opposition is a legal proceeding before the Trademark Trial and Appeal Board (TTAB) to prevent a pending trademark from being registered. Whether you're filing an opposition to protect your brand or defending against one, understanding the process is critical — these proceedings can last 12–24 months and cost thousands of dollars.
What Is a Trademark Opposition?
When a trademark application passes examination, it is published in the Official Gazette for a 30-day period. During this window, anyone who believes they would be damaged by the registration can file a Notice of Opposition.
An opposition is an adversarial proceeding — similar to litigation, but conducted entirely in writing before the TTAB rather than in court. The person opposing (the "opposer") bears the burden of proving that the mark should not be registered.
Important distinction: An opposition challenges a mark before registration. A cancellation proceeding challenges a mark after registration. The procedures are similar, but the timing and available grounds differ.
The 30-Day Opposition Window
| Detail | Information |
|---|---|
| Trigger | Publication in the Official Gazette |
| Standard opposition period | 30 days from publication date |
| Extension (first) | 30 days — automatic upon request (no fee) |
| Extension (second) | 60 days — automatic upon request (no fee) |
| Extension (third) | 60 days — requires consent or good cause |
| Maximum total period | Up to 180 days from publication |
| Filing system | ESTTA (Electronic System for Trademark Trials and Appeals) |
*Citation: 37 CFR § 2.101 — Filing an Opposition*
Pro Tip: If you're monitoring a competitor's application, request extensions of time to oppose as soon as the mark is published. This gives you time to analyze the mark and negotiate without losing your right to oppose.
Grounds for Opposition
The most common grounds for opposing a trademark include:
Section 2(d) — Likelihood of Confusion
The most frequently cited ground. The opposer argues that the applied-for mark is confusingly similar to their own prior mark. See our detailed guide on likelihood of confusion.
Section 2(e)(1) — Mere Descriptiveness
The mark merely describes the goods or services and lacks distinctiveness.
Section 2(a) — False Suggestion of Connection
The mark falsely suggests a connection with the opposer's organization, institution, or notable person.
Section 2(d) — Dilution (Famous Marks)
For famous marks only — the applied-for mark would dilute the distinctive quality of the famous mark through blurring or tarnishment.
Other Grounds
- Deceptive misdescriptiveness
- Geographic deceptiveness
- Functionality
- Prior use and ownership disputes
The TTAB Process Timeline
| Phase | Timeframe | Description |
|---|---|---|
| Notice of Opposition | Day 0 | Opposer files the Notice with ESTTA |
| Answer | 40 days after service | Applicant responds to all allegations |
| Discovery conference | 30 days after answer | Parties discuss discovery plan and potential settlement |
| Discovery period | ~6 months | Written discovery (interrogatories, document requests, depositions) |
| Opposer's testimony period | 30 days | Opposer presents evidence |
| Applicant's testimony period | 30 days | Applicant presents evidence |
| Rebuttal testimony | 15 days | Opposer may present rebuttal |
| Briefs | 60 days each | Written legal arguments |
| TTAB decision | Months to over a year | Board issues written decision |
| Total typical duration | 12–24 months |
Filing an Opposition
Requirements
- Standing — You must show that you have a real interest and would be personally damaged by the registration (a "real interest" test)
- Filing fee — $600 per class opposed (as of January 2025)
- Notice of Opposition — Filed through ESTTA, stating the grounds for opposition
- Evidence — Must be submitted during the designated testimony periods
What the Notice Must Include
- Identification of the opposer
- The application serial number being opposed
- The grounds for opposition (specific statutory sections)
- A clear statement of how the opposer would be damaged
Defending Against an Opposition
If your trademark application has been opposed, don't panic. Many oppositions settle favorably for the applicant.
Step 1: File Your Answer
You have 40 days from service of the Notice of Opposition to file your answer. Failing to answer results in a default judgment — your application will be refused.
Step 2: Evaluate Settlement Options
Most trademark oppositions settle before reaching a decision. Settlement options include:
- Consent agreement — Both parties agree to coexist under specified conditions
- Amendment of goods/services — Narrow your description to eliminate overlap
- Voluntary abandonment — Sometimes the best business decision if the opposition is strong
- Coexistence agreement — Detailed terms for how both marks will be used
Step 3: Discovery and Evidence
If settlement fails, both parties exchange evidence through written discovery and testimony periods.
Costs
| Component | Estimated Cost |
|---|---|
| TTAB filing fee | $600 per class |
| Attorney fees (simple case) | $5,000 – $10,000 |
| Attorney fees (complex case) | $15,000 – $25,000+ |
| Discovery costs | Included in attorney fees |
| Expert witness (if needed) | $3,000 – $10,000+ |
| Settlement negotiation | $2,000 – $5,000 |
Pro Tip: Approximately 70% of TTAB proceedings settle before reaching a final decision. Early settlement negotiations can save both parties significant time and money.
Opposition vs. Cancellation
| Factor | Opposition | Cancellation |
|---|---|---|
| Timing | Before registration | After registration |
| Filing system | ESTTA | ESTTA |
| Available grounds | All Section 2 grounds | Varies by timing |
| Time limit | 30 days (extendable) | 5 years for most grounds, no limit for fraud/genericness |
| Fee | $600/class | $600/class |
| Burden of proof | On opposer | On petitioner |
*Facing a trademark opposition or need to protect your brand? Our TTAB attorneys handle opposition proceedings from strategy through decision. Get Opposition Help →*
Need help with your trademark?
Get a free trademark check from our specialists — no obligation.
