Likelihood of Confusion (Section 2(d)): How to Respond to a USPTO Refusal

Updated November 10, 2026. Response periods and fees checked against the USPTO response-forms page, 37 C.F.R. §2.62, and the USPTO fee schedule (last revised November 1, 2026).

Short answer: A Section 2(d) likelihood of confusion refusal means the examining attorney thinks consumers are likely to confuse your mark with an earlier registered (or, in some cases, pending) mark for related goods or services. For most U.S. applications (Section 1 or 44), you generally have three months from the Office Action issue date to file an office action response, and you can buy one three-month extension for $125 (electronic) if you request it on or before the original deadline. Missing the deadline usually abandons the application. Outcomes are case-specific; there is no guaranteed path to registration.

Markavo is a flat-fee trademark law firm. Licensed attorneys handle U.S. (and Mexico) filings and post-filing work — meet them on our About page. This guide covers what trademark likelihood of confusion means at the USPTO, how examiners weigh the DuPont factors, how to respond before the deadline, and when abandoning or refiling may be cleaner.

What trademark likelihood of confusion (Section 2(d)) means

Section 2(d) of the Trademark Act (15 U.S.C. §1052(d)) bars registration of a mark that so resembles a mark already registered in the USPTO — or a mark previously used in the United States by another and not abandoned — that it is likely to cause confusion, mistake, or deception.

In examination, that usually appears as a trademark office action citing one or more live registrations (and sometimes earlier pending applications with priority). It is a substantive refusal, not a paperwork nit. For a plain overview of Office Actions generally, see What is a trademark office action?.

“Likelihood of confusion” is a legal test. The USPTO does not wait for proof that someone was actually confused. Examiners apply the factors from In re E. I. du Pont de Nemours & Co., 476 F.2d 1357 (C.C.P.A. 1973) — the DuPont factors — as summarized in TMEP §1207.01. Not every factor matters in every case. Two usually drive the analysis:

1. How similar the marks are in appearance, sound, meaning, and overall commercial impression
2. How related the goods or services are as written in your application and in the cited registration

If both point toward confusion, overcoming the refusal gets harder. If either is weak, arguments or a narrowing amendment have more room.

Likelihood of confusion factors (the DuPont factors) in plain English

Examiners and TTAB panels work from a longer checklist (du Pont, 476 F.2d at 1361; TMEP §1207.01). In plain English, the main likelihood of confusion factors ask:

• Marks: Do they look, sound, or mean enough alike that people could think one source owns both?
• Goods/services: Are they the kinds the same company might sell, or that customers would expect under one brand?
• Trade channels: Would both marks reach buyers through the same stores, sites, or sales paths?
• Buyer care: Impulse glance, or careful professional purchase?
• Strength of the prior mark: Is the cited mark famous, or is the field already crowded with similar marks on similar goods?
• Real-world coexistence: Actual confusion, long concurrent use without confusion, or a consent / coexistence agreement between the parties?
• Other facts: How broad the prior owner’s mark is, how much confusion would matter, and any other evidence that shows how the marks compete

There is no scorecard that always wins. Any one factor can control a particular case; many Office Actions rise or fall on mark similarity plus relatedness of the IDs. (Courts hearing infringement suits use similar multi-factor tests under different circuit names — for example Sleekcraft in the Ninth Circuit — but your USPTO examination file is decided under the DuPont framework in the TMEP.)

Your deadline (and the one paid extension)

Read the Issue date and response deadline on the face of your Office Action. Under current USPTO rules for most pre-registration examining-attorney Office Actions:

Practical rules:

• The extension request must arrive on or before the original three-month deadline, and only if you have not already filed your response (USPTO Response forms; 37 C.F.R. §2.62; fee at USPTO fee schedule, 37 C.F.R. §2.6(a)(28)(ii)).
• A typical response to an examining-attorney Office Action has no USPTO filing fee. Attorney fees are separate.
• The USPTO must receive the filing by 11:59 p.m. Eastern Time on the last day. If that day is a Saturday, Sunday, or U.S. federal holiday, the next business day is timely.
• If the application is abandoned for an unintentional late response, a Petition to Revive may be available (USPTO petition fee currently $250 electronic). Revival is not automatic.

File through the USPTO’s current electronic trademark systems, including Trademark Center, from the USPTO’s Apply online hub. Track status in TSDR — see our TSDR guide.

How to respond to a likelihood of confusion Office Action

Counsel usually evaluates these tools — often in combination. None guarantees registration, and there is no official USPTO “sample response” that fits every file. A strong office action response matches the cited registrations and the facts in your application.

1. Argue the marks are not confusingly similar

Compare the marks as a whole. Point out differences in spelling, sound, meaning, design, or commercial impression. A shared weak or descriptive word does not always control. Focus on how ordinary buyers of those goods would see the marks, not a side-by-side lab test (TMEP §1207.01(b) and related subsections).

2. Argue the goods, services, or trade channels diverge

The USPTO compares the identifications as written, not your private marketing plan. If the cited registration is narrow and yours is clearly different, argue relatedness and channels. Third-party registrations or uses showing a crowded field of similar marks (DuPont factor six) can cut against a broad reading of the cited mark.

3. Amend (narrow) your identification of goods or services

Often the practical fix when overcoming a likelihood of confusion rejection: delete overlapping goods, add limiting language the examining attorney will accept, or carve out the cited owner’s field — if the amendment is accurate and still covers what you sell or intend to sell. Do not amend into a description you cannot support. Free-form ID wording on a new filing can also trigger USPTO surcharges — see the 2026 trademark cost guide.

4. Consent or coexistence agreements

If the cited registrant will agree in writing that confusion is unlikely — ideally with clear channel or goods limits and cooperation language — examiners may give that agreement substantial weight (TMEP §1207.01(d)(viii) and related consent guidance). A thin “naked” consent is usually weaker than a detailed “clothed” agreement.

Markavo can help negotiate and draft settlement / coexistence paperwork through the dispute services on other U.S. trademark services. Consent is never guaranteed; some owners refuse or demand terms you cannot accept.

5. Ownership claims for related marks

Sometimes the cited mark is yours under a different entity, owned by a related company, or should be assigned so one party owns both. Ownership claims must match USPTO records. Inventing a relationship to dodge 2(d) is a non-starter.

6. Suspension

If the conflict is an earlier pending application that has not registered, the examining attorney may suspend your case while that earlier application moves. You still must meet any other requirements in the Office Action and watch suspension inquiries (generally three months for Section 1/44, with the same extension framework on the USPTO response-forms page).

What usually does not work alone

• “We Googled it and nobody else uses this name”
• “Our logos look different in real life” when the application is a standard-character (word) mark
• Attacking the validity of a cited registration in an ex parte response
• Ignoring the deadline while you “wait to see”

A proper clearance search before filing still prevents many 2(d) problems — start with our USPTO trademark search guide and free trademark search.

When to abandon or refile

Responding is not always the best spend. Consider express abandonment or a new application when the cited mark is close and the goods fully overlap, the brand is early enough that renaming costs less than months of argument, you need a different mark form (word vs logo) or owner structure, or consent talks have failed and an appeal is not justified.

Abandonment means you lose that filing date and the fees already paid. A new application restarts the clock and fee table (cost guide). Express abandonment and petition-to-revive options are listed on other U.S. trademark services.

After a final refusal (brief)

If the examining attorney makes the 2(d) refusal final, the window is still short. Typical options before the deadline (usually three months for Section 1/44, with one paid extension under the same framework):

1. Request for reconsideration with new arguments or evidence (does not by itself extend the appeal deadline)
2. Appeal to the Trademark Trial and Appeal Board — USPTO notice-of-appeal fee currently $225 per class (electronic), plus later brief fees if the appeal proceeds (fee schedule)
3. Abandon, redesign, or pursue coexistence outside examination

Filing reconsideration and a notice of appeal together is a common way to keep both paths open; the TTAB often suspends the appeal while the examining attorney reviews the reconsideration request (Response forms; TMEP §715.04). Appeals are written and evidence-heavy — treat “final” as a decision point with counsel, not a casual next form.

How Markavo helps

Markavo attorneys prepare and file Office Action responses on a flat-fee basis — via other U.S. trademark services. For harder conflicts, the same team can evaluate consent / coexistence strategy or a clean refile. New U.S. filings: markavo.com/us-trademarks. Mexico (IMPI): mexico-trademarks.

No firm can promise an examining attorney will withdraw a refusal. What we can do is meet the deadline, put the strongest accurate record in front of the Office, and tell you plainly when the better move is rename, narrow, settle, or walk away.

FAQ

What is likelihood of confusion in trademark law?

It is the legal test for whether consumers are likely to think two marks come from the same source (or are affiliated). At the USPTO, a Section 2(d) refusal applies that test to your application versus earlier marks. Courts use the same core idea in infringement cases. Actual confusion is not required — likely confusion is enough (TMEP §1207.01; 15 U.S.C. §1052(d)).

What are the likelihood of confusion factors?

USPTO examiners weigh the DuPont factors. The ones that most often matter are mark similarity and relatedness of the goods or services, plus trade channels, buyer care, strength of the prior mark, and evidence of coexistence or consent. See the section above and TMEP §1207.01.

How long do I have to respond to a trademark office action?

For most Section 1 or 44 applications: three months from the issue date, unless you timely buy the single three-month extension ($125 electronic). Madrid Section 66(a): generally six months, no extension. Follow the deadline on your Office Action (Response forms; 37 C.F.R. §2.62).

How do you respond to (or overcome) a likelihood of confusion rejection?

Common tools: argue the marks or goods are not confusingly related, narrow your identification, pursue a consent / coexistence agreement, claim related ownership when it is accurate, or accept suspension if the conflict is an earlier pending application. There is no one-size sample response — the record has to fit your cited marks and IDs. See “How to respond” above.

Is there a USPTO fee to file the response itself?

Usually no. The $125 electronic fee is for the extension of time, not the response. Attorney fees are separate.

Will a consent agreement automatically overcome 2(d)?

No. A detailed consent can carry substantial weight, but examiners still weigh the whole record. Thin “naked” consents are weaker (TMEP §1207.01 consent guidance).

What if I miss the deadline?

The application is generally abandoned. If the delay was unintentional, you may petition to revive (USPTO petition fee currently $250 electronic). Act quickly; revival is not guaranteed.

Should I search before I file?

Yes. Many 2(d) refusals are avoidable with a proper search and ID strategy (USPTO search guide; free trademark search).