Smell as trademark is one of the tools for the sensory recognition of a product, creating an instant means for consumers to identify a brand in the market. In modern branding, companies are constantly searching for innovative ways to stand out in a crowded marketplace. While logos, names, and slogans are commonly protected under trademark law, sensory branding is gaining increasing importance.
Below are five important things you should know about smell as trademark.
1. Provisions for Smell as Trademark
Most legal systems do not have specific provisions dedicated solely to scent marks. Instead, smell marks are generally protected under broader provisions that allow non-traditional trademarks to be registered if they are capable of distinguishing the goods or services of one undertaking from those of another.
International Framework
At the international level, the TRIPS Agreement provides the general framework for trademark protection. Article 15 states that any sign capable of distinguishing goods or services may qualify as a trademark. While the agreement does not explicitly mention smell marks, the wording allows member countries to recognize smell as trademark if it fulfills the distinctiveness requirement.
2. Smell Must Be Non-Functional to Be Registered
One of the biggest hurdles in registering a smell as trademark is proving that the scent is non-functional.
A scent is considered functional if it serves a practical purpose in the product. For example:
- Perfume smells in perfumes
- Floral scents in air fresheners
- Fragrance added to soaps for consumer appeal
In such cases, the smell is part of the product itself and cannot be monopolized through trademark protection.
However, if the scent is purely for brand identification, it may qualify for protection.
3. Representation Criteria of Smell as Trademark
Other challenging aspect of registering a smell as trademark lies in its representation in a trademark application. Unlike traditional trademarks such as logos or words, a smell cannot easily be depicted visually. Therefore, trademark offices require applicants to meet strict representation criteria to ensure that the scent can be clearly identified and distinguished.
Requirement of Clear and Precise Representation
For a smell as trademark to be registered, it must be represented in a way that allows authorities and the public to understand exactly what is being protected. The representation must generally be:
- Clear
- Precise
- Objective
- Accessible
- Durable
These requirements ensure that the scope of the trademark is clearly defined and that there is no confusion regarding the exact scent being claimed.
The Sieckmann Criteria
A major development in the representation of scent marks came from the decision of the Sieckmann v. Deutsches Patent- und Markenamt decided by the Court of Justice of the European Union.
In this case, the court established what is now known as the Sieckmann criteria, which outlines the conditions for representing non-traditional trademarks such as smells. According to the ruling, a trademark representation must be:
- Clear
- Precise
- Self-contained
- Easily accessible
- Intelligible
- Durable
- Objective
These criteria became an important standard for evaluating applications involving smell as trademark.
4. Technical Gaps in Smell as Trademark
Other major issue is the lack of standardized representation methods. Unlike visual trademarks, scents cannot be easily depicted in a clear and precise format. Written descriptions, chemical formulas, and scent samples have been attempted, but none provide a universally accepted solution.
It is difficult to digitally record scents. Trademark registers are digital databases, yet there is currently no reliable technology that can store and reproduce smells consistently.
There is also an absence of objective measurement standards for scents. While scientific tools can analyze chemical compositions, they cannot take into account how one person may perceive a smell from another.
Additionally, scent samples may deteriorate over time, raising concerns about stability and consistency. These technical gaps make it difficult for trademark offices to examine, compare, and enforce rights related to smell as trademark, limiting their practical use in trademark systems.
5. Past Precedents of Smell as Trademark
In different jurisdictions there have been notable precedents that demonstrate how scent marks can function as trademarks when they meet legal requirements such as distinctiveness and non-functionality.
In the United States, USPTO granted a trademark for a floral fragrance applied to sewing thread and embroidery yarn. The scent served no functional purpose and was considered distinctive enough to identify the product’s source.
Another application was examined by the European Union of a smell resembling fresh cut grass for tennis balls. It became one of the earliest recognized scent marks in the region.
For the first time in 2025, Controller General of Patent, Design and Trademark in India allowed the registration of a scent trademark. The trademark was for rose-scented tires filed by Sumitomo Rubber Industries.
These precedents illustrate that smell as trademark can be legally protected when it functions purely as a brand identifier and satisfies the requirements of trademark law. However, such registrations remain uncommon due to the challenges of representation and proof of distinctiveness.
Conclusion
The concept of smell as trademark presents exciting opportunities for sensory branding, but significant technical gaps still exist. Issues related to representation, digital storage, measurement standards, and scent stability continue to limit the practical implementation of smell trademarks.
As technology advances, particularly in the fields of scent digitization and sensory analysis, these challenges may eventually be addressed, making it easier for businesses to protect distinctive scents as trademarks.