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Intellectual Property Law: Patents, Copyright & Trade Marks

A comprehensive guide to UK intellectual property law for law students, covering copyright, patents, trade marks, design rights, infringement, and key cases like Designer Guild and Kerly's.

18 min read Free GuideBy The Law TutorsUpdated 2026-02-15

Intellectual Property (IP) law is a dynamic and crucial field that protects the creations of the mind. In the United Kingdom, it provides a legal framework for safeguarding intangible assets such as inventions, literary and artistic works, designs, and symbols. For law students, understanding IP is vital as it underpins innovation and economic growth across all sectors, from technology to the creative arts.

💡 Key Takeaway

Intellectual Property rights are primarily statutory, governed by acts like the Copyright, Designs and Patents Act 1988 and the Trade Marks Act 1994. These rights are negative rights, meaning they allow the owner to prevent others from using their creations without permission. The key is to understand the distinct nature of each right, its requirements for subsistence, and the scope of protection it offers.

Copyright is an automatic right that protects original literary, dramatic, musical, and artistic works (LDMA), as well as sound recordings, films, and broadcasts. It does not protect ideas, only the expression of those ideas. The primary legislation is the Copyright, Designs and Patents Act 1988 (CDPA).

For copyright to subsist in a work, it must be original and fall into one of the categories listed in s.1 CDPA 1988. Originality, as established in Ladbroke (Football) Ltd v William Hill (Football) Ltd [1964] 1 WLR 273, means the work must originate from the author and not be copied, requiring a degree of "skill, labour and judgment". The threshold is low, as confirmed in Interlego AG v Tyco Industries Inc [1989] AC 217.


Patents: Protecting Inventions

A patent is a registered right that gives the owner exclusive rights to their invention for a limited period (typically 20 years). It is a bargain between the inventor and the state: the inventor discloses the invention to the public in exchange for a temporary monopoly. The governing statute is the Patents Act 1977.

Requirements for Patentability

To be patentable, an invention must be:

  • New: It must not have been made public anywhere in the world before the date of filing (the "state of the art").
  • Involve an inventive step: It must not be obvious to a person skilled in the art, as discussed in Windsurfing International Inc v Tabur Marine (Great Britain) Ltd [1985] RPC 59.
  • Capable of industrial application: It must be able to be made or used in any kind of industry.
  • Not excluded: Certain things like scientific discoveries, literary works, or methods for performing mental acts are not considered inventions (s.1(2) Patents Act 1977).
In Conor Medsystems Inc v Angiotech Pharmaceuticals Inc [2008] UKHL 49, Lord Hoffmann clarified the test for obviousness, stating it is a "multifactorial assessment" and not a mechanistic application of rules.

Trade Marks: Protecting Brands

A trade mark is a sign which distinguishes the goods or services of one undertaking from those of others. It can be a name, logo, slogan, or even a shape. The primary law is the Trade Marks Act 1994. Registration provides a powerful tool against competitors using a similar mark.

Absolute and Relative Grounds for Refusal

A mark cannot be registered if it falls foul of absolute grounds (s.3 TMA 1994), for example, if it is descriptive of the goods or services, or has become customary in the trade. Relative grounds (s.5 TMA 1994) prevent registration if the mark is identical or similar to an earlier trade mark for identical or similar goods/services, creating a likelihood of confusion. The case of British Sugar plc v James Robertson & Sons Ltd [1996] RPC 281 is a key authority on descriptive marks.

📝 Exam Tip

When analyzing a trade mark problem question, always start by checking for absolute grounds for refusal under s.3 before considering relative grounds under s.5. A common exam scenario involves a mark that is descriptive or non-distinctive. Remember to discuss the concept of acquired distinctiveness through use.


Design Rights & Passing Off

Design Rights

Design rights protect the appearance of a product, specifically its shape, configuration, patterns, or ornamentation. The UK has both registered and unregistered design rights, providing different levels of protection. The key case of Ocular Sciences Ltd v Aspect Vision Care Ltd [1997] RPC 289 clarified that for unregistered design right, the design must be "commonplace" in the relevant design field to be excluded from protection.

Passing Off

The common law tort of passing off protects unregistered trade marks and goodwill. It prevents one trader from misrepresenting their goods or services as being those of another. The "classic trinity" required to establish passing off was set out by Lord Oliver in Reckitt & Colman Products Ltd v Borden Inc [1990] 1 WLR 491 (the Jif Lemon case): Goodwill, Misrepresentation, and Damage.

RightSubject MatterHow it ArisesDuration
CopyrightOriginal LDMA works, films, etc.AutomaticLife of author + 70 years
PatentNew and inventive inventionsRegistrationUp to 20 years
Trade MarkSigns distinguishing goods/servicesRegistration (or common law)10 years, renewable indefinitely
Unregistered Design RightOriginal, non-commonplace designsAutomatic10-15 years

Infringement and Defences

Infringement occurs when a person performs one of the exclusive acts reserved for the IP owner without their consent. For copyright, this includes copying the work or issuing copies to the public (s.16 CDPA 1988). A key case is Designers Guild Ltd v Russell Williams (Textiles) Ltd [2000] 1 WLR 2416, which established that the test for infringement is whether a "substantial part" of the original work has been copied.

For trade marks, infringement under s.10 TMA 1994 can occur through use of an identical or similar mark on identical or similar goods/services, leading to a likelihood of confusion. The case of L'Oreal SA v Bellure NV [2007] EWCA Civ 968 dealt with "smell-alike" perfumes and the concept of unfair advantage.

⚠️ Common Mistake

A frequent error is to confuse the requirements for different IP rights. For example, applying the "novelty" test from patent law to copyright. Remember, copyright does not require novelty, only originality. The work can be on a well-worn theme, as long as the expression is the author's own.


Frequently Asked Questions (FAQ)

No, copyright protects the expression of an idea, not the idea itself. You cannot copyright the plot concept, but you automatically have copyright in the specific words you use to write the story. This principle was central to the case of Baigent v Random House Group Ltd [2007] EWCA Civ 247 (the Da Vinci Code case).

What is the difference between a patent and a trade mark?

A patent protects an invention (how something works or is made), giving the owner a 20-year monopoly. A trade mark protects a brand identity (a name or logo), helping consumers identify the source of goods or services. It can be renewed indefinitely.

No, copyright protection is automatic in the UK as soon as a qualifying work is created and fixed in a material form (e.g., written down or recorded). There is no formal registration system like in the USA.

What does "passing off" mean?

Passing off is a common law action to stop someone from using a name or get-up for their goods/services that is confusingly similar to your existing brand, thereby damaging your goodwill. It protects unregistered trade marks.

The CDPA 1988 provides several "fair dealing" defences, including for the purposes of non-commercial research or private study (s.29), criticism, review, quotation, and news reporting (s.30). Parody is also a permitted defence (s.30A). The leading case on fair dealing is Ashdown v Telegraph Group Ltd [2001] EWCA Civ 1142.

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