Trademark Class 4: Lubricants and fuels — What It Covers, With a Live Count
Short answer
Trademark class 4 covers industrial oils and greases, lubricants, fuels including motor fuel and biofuel, candles and wicks, and dust-absorbing compositions. It is a goods class, and as of September 14, 2026 it holds 21,759 live US marks, 0.5% of the register, ranking 39 of 45 by size. A registration in class 4 protects the name only for these goods; the same name can be, and often is, registered by an unrelated business in another class.
Class 4 is a small class, with 21,759 live marks out of 4,796,936 across all 45 classes. A live mark is one that is registered or pending; the count is computed from USPTO bulk data by each mark's primary class and refreshed daily.
Candles are the surprise in class 4: a candle brand sits alongside motor oil because both are, in the Nice logic, fuels for illumination. Scented oils are class 3 unless they are burned. Electricity itself is a class 4 good; supplying it is a class 39 or 40 service.
What files in class 4
| Typically in class 4 | Examples of businesses |
|---|---|
| motor oil and lubricants | oil and fuel brands |
| gasoline, diesel, and biofuel | lubricant makers |
| charcoal and firelighters | candle companies |
| candles and wicks | energy retailers |
| cutting fluids | |
| electricity as a commodity |
The USPTO's ID Manual lists the accepted descriptions for class 4. Choosing one of them keeps the filing fee at $350 per class; a custom description costs $550. See what a trademark costs.
What is not in class 4
| Looks like class 4, but is | Class |
|---|---|
| fuel station services | 37 |
| electricity generation services | 40 |
| chemical additives | 1 |
| scented oils for aromatherapy | 3 |
The class follows the product, not the industry. A business in this field will often need one of the classes above as well as class 4; the second class is a second filing fee, and a registration in one does not cover the other.
Coordinated classes
The USPTO searches class 4 together with these classes when it examines an application, because confusion between them is common. A live mark in a coordinated class can block a class 4 application, and a class 4 mark can block one of these.
A near match in a coordinated class is worth reading closely. A near match anywhere else on the register is usually not. See is my name trademarked for how to read one.
How crowded class 4 is
| Live marks in class 4 | 21,759 |
| Share of the 45-class register | 0.5% |
| Rank by size | 39 of 45 |
| As of | September 14, 2026 |
A smaller class means fewer near matches, and a name that is clear here tends to stay clear. It is still worth searching the coordinated classes, since that is where a conflict for a class 4 mark most often comes from.
Before you file in class 4
- Confirm the goods are actually class 4 against the USPTO ID Manual, not against the industry the business is in.
- Check the neighbouring classes in the table above for anything the business also sells or does.
- Search the name on Silvol and read every live match by class: class 4 and its coordinated classes matter; others usually do not.
- Budget per class. Each class is $350 to file and $650 every ten years to maintain.
Common questions
What is trademark class 4?
Class 4 is the Nice classification for industrial oils and greases, lubricants, fuels including motor fuel and biofuel, candles and wicks, and dust-absorbing compositions. It is one of the 34 goods classes (1–34), and it currently holds 21,759 live US marks.
What does class 4 cover?
Industrial oils and greases, lubricants, fuels including motor fuel and biofuel, candles and wicks, and dust-absorbing compositions. The USPTO's ID Manual has the full list of accepted descriptions; the examples above are the common ones.
How much does it cost to trademark in class 4?
$350 in USPTO fees for a clean electronic application using an ID Manual description, $550 with a custom description, plus $650 per class every ten years to maintain. Attorney fees, if any, are on top.
Is class 4 crowded?
It holds 21,759 live marks, 0.5% of the register, ranking 39 of 45. That is one of the smaller classes.
Can two businesses have the same name in class 4?
Not for similar goods. Two marks in the same class for overlapping goods or services will conflict. The same name in an unrelated class usually will not.
What are the coordinated classes for class 4?
1, 35, 37, 39, 40, 42. The USPTO searches these together with class 4 because confusion across them is common.
Keep reading
- All 45 trademark classes, with live counts
- Is my name trademarked? How to read a match by class
- How much does a trademark cost, per class
Silvol checks a name against live US federal trademarks and the .com zone. It is not a law firm, does not clear names for use, and does not cover state registrations or unregistered marks. Class counts are computed from USPTO bulk data by primary class and refreshed daily.
Register counts as of September 14, 2026. Silvol is not a law firm and does not clear names for use.