What is passing off?

Passing off is a common law right used to enforce unregistered intellectual property rights.

It protects the goodwill and reputation of a business from others who misrepresent their goods or services as being connected with the original business. Unlike trade mark infringement, which focuses on registered marks, passing off provides recourse even when a trade mark has not been formally registered.

In essence, passing off aims to prevent unfair competition and consumer confusion where one party seeks to benefit from the established reputation of another. If your business has developed a strong identity in the market, passing off can be a crucial legal mechanism to safeguard your branding and commercial integrity.

Understanding the legal definition of passing off

Passing off occurs when one party presents their products or services in a way that causes the public to believe they are associated with another established business. For a claim of passing off to succeed, the courts generally require three core elements to be proven. This is often referred to as the “classical trinity” and was established in the case of Reckitt & Colman Products Ltd v Borden Inc.:

1. Goodwill: The claimant must establish that their goods or services have acquired goodwill or reputation in the market, indicating consumer recognition.
2. Misrepresentation: The defendant must have made a misrepresentation that leads or is likely to lead the public to believe their goods or services are those of the claimant, or connected with them in some way.
3. Damage: The misrepresentation must cause, or be likely to cause, damage to the goodwill or reputation of the claimant’s business.

This legal test highlights that passing off is not simply about copying a logo or name, but rather about the impact on consumer perception and potential harm to the original brand’s market position.

Types of passing off

There are different forms of passing off, and understanding each can help businesses identify where their brand may be at risk. These include:

• Classic passing off: Involves a false representation that one business’s goods or services are those of another. This often includes imitation of names, logos, packaging or marketing style.
• Extended passing off: Protects the collective goodwill of a group or class of traders. It is commonly seen in cases involving products known for certain qualities, such as Champagne or Parma Ham, where the misrepresentation affects the integrity of a shared identity.
• Reverse passing off: Occurs when a party presents another trader’s goods or services as their own, often by removing branding or distinctive features.

Each form of passing off can cause tangible harm to a business, particularly those operating in competitive markets where brand identity is a key differentiator.

Examples of passing off in practice

Cases of passing off can vary widely and occur across multiple sectors. Some common examples include:

• A new food product using packaging that closely mimics that of a well-known brand, causing shoppers to be misled at the point of sale.
• A local business adopting the same or a confusingly similar name as an established national chain, leading customers to believe there is an affiliation.
• An online retailer using a domain name or website layout that strongly resembles a competitor, diverting web traffic and misleading consumers.

In each instance, the business with established goodwill could pursue legal action to stop the activity and seek damages for any loss incurred.

Evidence required in passing off claims

Bringing a successful passing off claim requires robust evidence to demonstrate each element of the classical trinity. This may include:

• Market research or customer surveys that show consumer recognition of the claimant’s brand.
• Examples of confusion, such as complaints from customers or incorrect orders meant for the defendant.
• Financial records showing a decline in business or reputational harm following the misrepresentation.
• Marketing materials, invoices or correspondence that support the claim of longstanding and established goodwill.

Early legal advice is essential in gathering and presenting the necessary evidence to build a strong case for passing off.

Defences to a passing off claim

There are several potential defences a defendant may raise during a passing off claim. These include:

• Arguing that there is no goodwill associated with the claimant’s product or brand.
• Demonstrating that there was no misrepresentation — for example, that the public would not be confused by the distinct branding or marketing.
• Proving there was no damage, especially if the two businesses serve entirely different markets or customer bases.
• Establishing honest concurrent use, where both parties have lawfully used similar marks in good faith over a considerable period.

Every passing off case is unique, and the facts will often determine the viability of both the claim and any defence.