
Trade mark infringement: What it takes to protect businesses’ distinctiveness and goodwill
What constitutes trade mark infringement under UK law? Under Section 10 of the Trade Marks Act 1994, trade mark infringement occurs when a third party uses an identical or similar sign in the course of trade without consent in relation to identical or similar goods or services, creating a likelihood of confusion or association
Brand equity is the commercial lifeblood of any successful business. It encompasses the trust, recognition, and loyalty that drive your customers’ and clients’ purchasing decisions.
When a competitor encroaches on your brand by adopting a confusingly similar name, logo, or get-up, they actively siphon that equity and damage your market share.
In the UK, defending your brand relies upon two distinct legal frameworks: trade mark infringement (protecting registered trade marks) and passing off (protecting unregistered goodwill).
Below is an outline of how we enforce our clients’ brand rights, how we defend allegations of infringement and the tactical realities of litigating brand disputes as specialist IP solicitors.
Trade mark infringement: Enforcing registered rights
If you hold a valid UK registered trade mark, your brand is protected by a statutory monopoly under the Trade Marks Act 1994. Enforcing a registered right is the most streamlined and powerful way to stop a copycat. Infringement generally occurs under three main statutory scenarios (or a combination thereof).
Double identity
The competitor uses a sign that is identical to your registered trade mark, for goods or services that are identical to those in your registration.
This is a strict liability offence. In cases of double identity, you do not need to prove that consumers were actually confused. The identical use is enough to establish infringement of your registered legal right.
Likelihood of confusion
A competitor uses a sign that is identical or similar, and this creates a “likelihood of confusion” among the public, i.e. that the buying public may think their goods and services originate from your business.
Broadly speaking, this covers the majority of disputes. “Confusion” includes a likelihood of association. This means that if a consumer subconsciously links the alleged infringer’s brand to yours, infringement may be established, even if they aren’t directly misled into buying the wrong product.
Protection of reputation
If it can be established that your trade mark has a significant reputation in the UK, you can stop a competitor from using a similar mark even if their goods/services are completely dissimilar to yours.
In these instances, you must prove that their use of the mark takes unfair advantage of your brand or is detrimental to its distinctive character.

In most trade mark infringement cases that our team encounters, there is an abundance of nuance, and several different angles upon which a claim can be asserted or defended.
Our team takes an exhaustive and holistic approach to claims. In material terms, this means exploring and deploying all possible legal avenues in service of our clients’ objectives.
Passing off: Protecting unregistered goodwill
In many cases, businesses fail to register their core brand assets, only to find that a competitor has copied the “look and feel” of their offer. Whilst a trade mark infringement claim cannot be brought due to the absence of the registered right, there is recourse through the common law tort of passing off.
The lack of a statutory monopoly over a registered sign means that instead of proving infringement on a name/logo etc., a passing off claim instead focuses on the underlying goodwill attached to your business.
Crucially, it’s recommended that, where possible, businesses register their key brand assets as registered trade marks – as if infringement occurs, claims are much more straightforward to assert, and the protection they confer over the relevant brands is more robust.
A successful passing off claim typically proves three key areas (the “classic trinity”):
Goodwill
It must be proven that the business has established a significant attractive force (goodwill) in the UK market.
This is usually evidenced through an established history of extensive sales and marketing evidence relating to the brand or “sign” in question (e.g. logo, product name etc.).
Misrepresentation
It must be proven that the competitor deceived the public into believing that their goods and services are yours (or they’re affiliated with you).
This may take the form of enquiries and communications from clients and customers that express this. As with goodwill, this needs to be extensively evidenced.
Damage
It must be proven that the misrepresentation has caused (or is likely to cause) actual financial or reputational damage to your business. If the alleged infringement is viewed as ongoing, this might be evidenced with a “before and after” set of financial information.
Whilst passing off is a vital safety net for businesses that find themselves being encroached upon, it is seen as an evidentiary marathon.
Gathering the relevant financial data and evidence to prove the above places a significant burden on the Claimant, making a passing off claim significantly more expensive and uncertain to litigate when compared to a registered trade mark infringement claim where the monopoly over use of a mark is definitive.
A comparison of Trade mark infringement to passing off disputes
| Legal dimension | Registered trade mark infringement (Trade Marks Act 1994) | Common law passing off (unregistered rights) |
| Basis of protection | Statutory monopoly granted via UKIPO registration certificate | Underlying commercial goodwill generated through trading history |
| Evidentiary burden | Low; registration certificate proves ownership and scope of rights | High (“evidentiary marathon” requiring years of sales and marketing data to prove) |
| Proof of confusion | Strict liability under Section 10(1) for identical marks and goods. | Claimant must prove actionable misrepresentation deceiving the public. |
| Litigation cost risk | Streamlined enforcement suitable for rapid pre-action or IPEC resolution. | Significantly higher legal spend due to requirement for heavy factual and witness evidence. |
Defending against a claim: Finding the leverage
If you have received a letter before action (or “cease and desist”) letter alleging trade mark infringement or passing off, capitulation is rarely the only option.
As a result, it’s important to not be intimidated by threats of court action and, with stated deadlines in mind – seek professional advice to determine the severity of the claim.
Our specialist disputes team audit the Claimant’s position for legal and commercial vulnerabilities. These can include but are not limited to:
Non-use and revocation
Has the claimant actually used their registered trade mark for specific goods in the last five years? What is the exact nature and scope of their registered right?
If not, their trade mark may be vulnerable to cancellation, or a challenge – which may neutralise the threat or bring the other side to the negotiating table.
Our ability to see the details (that others often don’t) has allowed us to deploy precise interventions in many cases over the years.
Unjustified threats
UK law penalises IP owners who make baseless, aggressive threats to damage a competitor’s business.
If a claimant’s letter before action oversteps the mark, we may be in the position to assert unjustified threats and counter-sue for the damage caused by the threat itself, rapidly shifting negotiations into your business’ favour.
Crucially, this is also an important reason to be extremely careful in asserting a claim, as doing so imprecisely can result in a counterclaim.
Assertion of prior rights
To what extent can it be argued that your business has established local goodwill in your use of the brand in question before the claimant registered their trade mark?
In many cases we have found that clients can plead a statutory defence based on earlier unregistered rights.
This type of defence is also one which requires a significant amount of evidence to be gathered.
Each claim that lands on our desks is unique, and the approach that our team takes is entirely dependent on the unique circumstances in play, both in terms of the facts and the law in question.
What does not change, however, is our exhaustive approach to identifying and acting upon each and every possible avenue to progress our client’s best interests.
Commercial resolutions and remedies
Our primary objective is to resolve the dispute commercially, minimising disruption to our clients’ businesses wherever possible. This is often achieved through “without prejudice” negotiations, then often resulting in a co-existence agreement – allowing both entities to operate within strictly defined commercial boundaries (in essence, enforced via a contract).
If litigation is unavoidable, we act decisively in the Intellectual Property Enterprise Court (IPEC) or, where relevant, the High Court to secure:
- Interim injunctions for IP: Emergency orders to immediately halt the sale of infringing goods pending a trial
- Financial remedies: Depending on the circumstances, we pursue 1) an inquiry into your lost damages or 2) an “account of profits”, seeking to compel the infringer to surrender the net profits they made from the infringement.
- Delivery up: In relevant circumstances, we can seek a court order compelling the infringer to surrender or verifiably destroy all infringing stock and collateral.
Is a competitor trading on your brand’s reputation?
Whether you need to launch immediate enforcement action or defend against a complex infringement claim, strategic precision is required. Contact our specialist team for a confidential assessment of your leverage and commercial options.
Yes, under Section 11(3) of the Trade Marks Act 1994, a registered trade mark is not infringed by the continuous use of an earlier unregistered right in a particular locality. If your business established protectable goodwill prior to the claimant’s registration or first use, you may seek to assert a prior rights defence.
Successful claimants in UK trade mark litigation must elect between two mutually exclusive financial remedies: an inquiry as to damages (compensating for actual lost sales or a reasonable notional royalty) or an account of profits (compelling the infringer to surrender the net profits generated from the infringing acts).
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