Research library · Guide
How the USPTO decides whether two trademarks are too close
Lawyers call this: likelihood of confusion · Section 2(d)
Short answer
The USPTO refuses a trademark application under Section 2(d) when your mark, used on your goods, would probably confuse ordinary buyers about who is behind the product. The Board decides that by weighing the DuPont factors — thirteen of them, but two do most of the work: how similar the marks are, and how related the goods or services are.
A refusal is not a rejection. It is the examining attorney’s position, and you get to answer it.
Why it matters
If the refusal stands, the application dies and the money spent on it is gone. Keeping the application alive preserves the filing date. If the mark ultimately registers, that filing date can matter to nationwide priority under Section 7(c), subject to earlier users and other earlier priority rights.
The governing law
Section 2(d) of the Lanham Act, 15 U.S.C. § 1052(d), bars registration of a mark that so resembles a registered mark as to be likely to cause confusion, mistake, or deception. The factors come from In re E.I. du Pont de Nemours & Co., 476 F.2d 1357 (C.C.P.A. 1973).
Not every factor matters in every case. Only the factors of significance to the particular mark need be considered, and they are weighed rather than counted. See In re Mighty Leaf Tea, 601 F.3d 1342, 1346 (Fed. Cir. 2010).
The Board applies the factors for which there is evidence in the record. Silence on a factor is not a finding.
The DuPont factors
The thirteen du Pont factors, in their conventional order. The count beside each is the number of records in this library that carry a finding on it, whether neutral, weighing for or against confusion, or driving the result.
Each factor has its own page:
- Similarity of the marks
- Relatedness of the goods or services
- Trade channels
- Conditions of sale and buyer care
- Fame of the prior mark
- Similar marks already in use
- Actual confusion
- Side-by-side use without confusion
- Variety of goods the mark is used on
- Dealings between the owners, including consent agreements
- The applicant’s right to exclude others
- How much confusion is possible
- Any other probative fact
What this corpus shows about Section 2(d)
Most writing about Section 2(d) recites the factors. This is how they were coded across the decisions in this library.
How often each factor bore on the result
Which way the first two factors cut
In the Section 2(d) decisions coded in this library, factors 1 and 2 were the factors most often identified as driving the result.
| Factor | Dispositive | Dispositive — Favored Applicant | Dispositive — Favored Opposer or Refusal | Favored Applicant | Favored Opposer or Refusal | Neutral | Significant |
|---|---|---|---|---|---|---|---|
| 1. Similarity of the marks | 9 | 3 | 10 | 1 | 11 | — | 4 |
| 2. Relatedness of the goods or services | 8 | 1 | 11 | 1 | 12 | — | 4 |
| 3. Similarity of trade channels | 1 | — | 3 | 2 | 15 | — | 6 |
| 4. Conditions of sale and buyer sophistication | — | 2 | 2 | 4 | 10 | 5 | — |
Important decisions
GUILD MORTGAGE COMPANY was found too similar to the registered GUILD INVESTMENT MANAGEMENT for related financial services, and more than forty years of side-by-side use…
Read the plain summary →In re Guild Mortgage Company · 2020No later change on its docketThe Board affirmed refusal of the identical mark COUNTRY OVEN for retail and custom bakery services because a different company already owns a decades-old registration for…
Read the plain summary →In re Country Oven, Inc. · 2019No later change on its docketThe Board allowed AMERICAN CONSTELLATION to proceed to registration for cruise ship services over the cited marks CONSTELLATION and CELEBRITY CONSTELLATION, finding that even…
Read the plain summary →In re American Cruise Lines, Inc. · 2018No later change on its docketThe Board reversed a refusal to register I’M SMOKING HOT for cosmetics and personal care products, finding that even though the goods overlap with a prior registration for…
Read the plain summary →In re FabFitFun, Inc. · 2018No later change on its docketWhat to do next
If you have a refusal in hand, most pre-registration Office Actions give you three months from the issue date, with a one-time three-month extension available for a fee. Section 66(a) applications work differently. Your letter states the deadline that applies to you. Read the examining attorney’s evidence before you read the refusal — the evidence is usually where the answer is.
Comparing one mark against one registration on clearly unrelated goods is often a call you can make yourself. A refusal in hand, or a close mark on the same goods, is where an attorney’s read pays for itself.
If you have a refusal, Valet Law, PLLC can review the examining attorney’s evidence and tell you what the response has to show.
Attorney review is provided by Valet Law, PLLC. Keep confidential facts out of public tools. Your first message to Valet Law should identify the parties and the general issue only. Wait until Valet Law confirms it can discuss the matter before sending confidential details.
Update log
| 2026-09-19 | Page created. Corpus counts computed from 178 analyzed decisions. |
Who checked this
Reviewed and approved by Brandon Leavitt on 2026-10-02.
General information about how trademark law works. It is not legal advice about your situation, and reading it does not make anyone your lawyer.