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Passing Off and the Protection of Goodwill

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August 12, 2026
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This assignment will first define and explain the common law tort of passing off. It will then apply the principles of this tort to a factual scenario to advise a sole trader, Ricardo, on the elements he would need to establish to protect the trading name of his product.

(a) Define and explain the term “Passing Off”

The tort of passing off is a common law action that provides protection for the unregistered trading names, marks, or get-up of a business. It prevents one trader from misrepresenting their goods or services as being those of another trader, or as being associated with them. The fundamental purpose of this tort is to protect the trader's 'goodwill' – the reputation and customer connections they have built up through their business activities. As Lord Macnaghten described it, goodwill is "the attractive force which brings in custom" (Commissioners of Inland Revenue v Muller & Co's Margarine Ltd [1901] AC 217).

Passing off is distinct from trademark infringement, which is a statutory action under the Trade Marks Act 1994 and protects marks that have been officially registered. Passing off is therefore crucial for businesses, like the one in the scenario, that have valuable goodwill but have not, for whatever reason, registered their trading name or logo as a trademark.

The modern law of passing off is generally understood through the "classical trinity" of requirements, as articulated by Lord Oliver in the House of Lords case of Reckitt & Colman Products Ltd v Borden Inc (No 3) [1990] 1 WLR 491, famously known as the Jif Lemon case. To succeed in a passing off claim, a claimant must establish these three elements:

  1. Goodwill or Reputation: The claimant must demonstrate they have acquired goodwill or reputation in their goods, name, or get-up, which is recognised by the public as distinctive of their business.
  2. Misrepresentation: The claimant must show that the defendant has made a misrepresentation to the public (whether intentionally or not) that is likely to lead people to believe that the goods or services offered by the defendant are those of the claimant.
  3. Damage: The claimant must prove that they have suffered, or are likely to suffer, damage to their goodwill as a result of the defendant's misrepresentation.

These three elements form the necessary framework for any claim and provide a structure for assessing whether a business's trading identity has been unlawfully misappropriated.

(b) Advice to Ricardo

This advice will address the elements and conditions Ricardo would need to satisfy to bring a successful claim in passing off to protect his unregistered trading name, "Ti Lambic". As he has not registered the name, passing off is the only legal action available to him against a potential infringement. His claim would be assessed against the three-part test of goodwill, misrepresentation, and damage, as established in Reckitt & Colman Products Ltd v Borden Inc (No 3) [1990] 1 WLR 491.

1. Establishing Goodwill

The first and most critical step for Ricardo is to prove that he has generated protectable goodwill in the name "Ti Lambic". Goodwill does not simply mean having a good reputation; in this legal context, it refers to the power of a name or mark to attract customers to a specific business. Ricardo must show that the name "Ti Lambic" is distinctive of his rhum and that it is associated with his business in the minds of the purchasing public.

On the facts, Ricardo has been making and selling his rhum under this name for "nearly the past 10 years". A long period of trading is strong evidence of the existence of goodwill (Bainbridge, 2018). The fact that he has consistently used the name "Ti Lambic" suggests that it has become the indicator of the source of that particular rhum for his customers.

A potential issue is the scale and location of his business. He operates from a single "stall on the beach" and sells to "tourists". The law, however, does not require goodwill to be nationwide or even city-wide to be protectable. Localised goodwill is sufficient. The case of Stannard v Reay [1967] FSR 140 provides a good example, where the goodwill of a mobile fish and chip van operating in a specific area under the name 'Mr Chippy' was protected. Similarly, Ricardo's goodwill would be attached to his specific location and the product he sells there. The fact that his customers are tourists, a transient group, does not necessarily defeat his claim. Goodwill can exist where a business has a reputation among a particular section of the public, even if those individuals are temporary visitors to the area. The key is whether, among the class of people who buy rhum on that beach, the name "Ti Lambic" signifies Ricardo's product (Wadlow, 2016). Ricardo could support his claim with evidence such as sales records, photographs of his stall over the years, or even witness statements from regular local suppliers or repeat tourist customers if available.

The distinctiveness of the name "Ti Lambic" is also in his favour. It is not a descriptive term for rum (like "Beach Rhum," which would be harder to protect). It appears to be an invented name, which makes it more likely that it has become uniquely associated with his product. Therefore, it is highly likely that Ricardo would be able to satisfy the court that he has established sufficient goodwill in the name "Ti Lambic" within his specific trading area.

2. Demonstrating a Misrepresentation

The second element Ricardo would need to prove is that a competitor has made a misrepresentation. This does not require proof of an intent to deceive; an innocent misrepresentation that nonetheless causes confusion is sufficient. The central question is whether the competitor's actions are likely to confuse a significant portion of the relevant public into believing that their product is connected with Ricardo's.

The question asks what is required "in the event of an infringement". An infringement would occur if, for example, another trader set up a stall on the same beach, or a nearby one, selling their own rum under the name "Ti Lambic". A misrepresentation could also occur if the name used was confusingly similar, such as "Tee Lambic" or "Ti Lambique". The test is whether the similarity in names, combined with the similarity in product and sales environment, would be likely to deceive the average customer who encounters the products (Morning Star Cooperative Society v Express Newspapers Ltd [1979] FSR 113).

Given that Ricardo's customers are tourists, they may have a less-than-perfect recollection of the name and the exact appearance of his stall. This could make them more susceptible to confusion if a competitor uses a similar name and presentation. The competitor would be effectively leveraging the reputation (goodwill) that Ricardo has spent a decade building. The competitor would be misrepresenting their goods as being the well-known "Ti Lambic" that tourists may have heard about or purchased on previous visits. Ricardo would need to show that this confusion is a real likelihood, not just a remote possibility. Evidence of actual confusion, such as customers complaining to him about the quality of a product they thought was his, would be very powerful, though it is not strictly necessary to prove.

3. Proving Damage or the Likelihood of Damage

The final element is to show that the misrepresentation has caused, or is likely to cause, damage to Ricardo's goodwill. This damage can manifest in several ways.

First, there is the direct loss of sales. If customers are confused and buy the competitor's rum believing it to be Ricardo's, then Ricardo has lost that sale. This is a classic form of damage in passing off cases and represents a direct erosion of his custom and, therefore, his goodwill.

Second, and potentially more serious, is damage to his reputation. Ricardo has been making his product for nearly a decade and presumably has established a reputation for a certain quality. If the infringing product sold by the competitor is of inferior quality, customers who are deceived will associate that poor quality with Ricardo's "Ti Lambic" brand. This tarnishes the reputation and "attractive force" of his business, potentially causing long-term harm that is harder to quantify than a simple loss of sales. This is often referred to as dilution or erosion of the distinctiveness and value of the mark (Taittinger SA v Allbev Ltd [1993] FSR 641).

To succeed, Ricardo would need to demonstrate a real likelihood of such damage. In a situation where a competitor is selling the same type of product under the same name in the same location, the likelihood of damage is often inferred by the courts. The law presumes that no one would go to the trouble of imitating a successful trader's name unless they intended to divert trade to themselves, which inherently causes damage. Should a competitor appear, Ricardo would be well-advised to act quickly to seek an injunction to prevent further infringing activity and mitigate the damage to his business.

Conclusion of Advice

In summary, Ricardo has a strong potential claim in the tort of passing off to protect his unregistered name "Ti Lambic". Although he operates a small-scale, localised business, the law of passing off is designed to protect precisely this kind of established goodwill from being unfairly misappropriated.

To succeed in a future action, he must be prepared to prove the following three elements:

  1. Goodwill: He must evidence his decade of trading, the distinctiveness of the name "Ti Lambic", and its association with his product in the minds of his customers (tourists on the beach).
  2. Misrepresentation: He must show that a competitor's use of the same or a similar name for a similar product is likely to cause confusion among the public.
  3. Damage: He must demonstrate that this confusion is likely to lead to a loss of sales or damage to his business's reputation.

While he does not have the automatic protection of a registered trademark, Ricardo's long and consistent use of a distinctive name gives him a solid foundation to use the common law to defend the business he has built.

References

Bainbridge, D. (2018) Intellectual Property. 10th edn. Pearson.

Commissioners of Inland Revenue v Muller & Co's Margarine Ltd [1901] AC 217.

Morning Star Cooperative Society v Express Newspapers Ltd [1979] FSR 113.

Reckitt & Colman Products Ltd v Borden Inc (No 3) [1990] 1 WLR 491.

Stannard v Reay [1967] FSR 140.

Taittinger SA v Allbev Ltd [1993] FSR 641.

Wadlow, C. (2016) The Law of Passing-Off: Unfair Competition by Misrepresentation. 5th edn. Sweet & Maxwell.

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