Series Marks in the UK: What They Are and Why They Are Being Phased Out

The UK trade mark system has historically allowed applicants to register a series of marks within a single application — a group of marks that resemble each other in their material particulars, differing only in non-distinctive elements. This was a cost-efficient way to protect minor variations of a brand under one registration. However, the concept of series marks is expected to be abolished under upcoming reforms anticipated in 2025 or 2026, making it essential for brand owners to understand what they have and how to prepare.

What Is a Series Mark?

A series mark is a single registration that covers multiple versions of a trade mark that are substantially identical. The marks in the series must resemble each other in their ""material particulars"" and differ only in elements that do not substantially affect the identity of the mark.

For example, a series might include the same word mark presented in different stylisations, or the same logo with minor colour or layout variations. The key requirement is that the core distinctive element remains the same across all marks in the series.

The Legal Basis

Series marks are provided for under Section 41(2) of the Trade Marks Act 1994. The provision allows two or more marks to be registered as a series where they resemble each other in their material particulars and differ only in respect of non-distinctive matters.

The UKIPO examines each mark in the series individually for registrability, but the entire series is covered by a single registration number and a single renewal date.

Advantages of the Series Mark System

The series mark offered several practical benefits:

• Cost savings: Multiple mark variations could be registered under a single fee, rather than requiring separate applications for each version.
• Administrative simplicity: One registration number, one renewal date, and one record to manage for several related marks.
• Flexibility: Brand owners could protect foreseeable variations of their mark without committing to a single stylisation.

The Problems with Series Marks

Despite their apparent advantages, series marks have created significant practical difficulties:

• Unclear scope of protection: It is often difficult to determine exactly what is protected. Enforcement against third parties requires identifying which specific mark in the series is being relied upon, leading to legal uncertainty.
• Use requirements: To maintain a series registration, the owner must demonstrate genuine use of each mark in the series. If only one variation is used in practice, the unused marks within the series become vulnerable to revocation.
• Comparison difficulties: In opposition and invalidity proceedings, a series mark creates complexity when assessing likelihood of confusion, as the earlier right consists of multiple marks rather than a single sign.

The Anticipated Abolition

The UK Government’s review of the trade mark system has signalled that series marks are likely to be abolished in forthcoming legislation, expected to take effect in 2025 or 2026. The reasoning is that the concept adds complexity without proportionate benefit, and that the modern filing system — with relatively low fees per application — makes it practical for applicants to file separate applications for each mark variation.

The exact transitional arrangements have not been finalised, but it is expected that existing series registrations will remain on the register until their renewal date or until the owner takes action to separate or replace them.

What Happens to Existing Series Registrations?

Brand owners who currently hold series marks should begin planning for the transition. Possible outcomes include:

• Continuation until renewal: Existing series marks may remain valid and enforceable until their next renewal date, at which point they would need to be replaced by individual filings.
• Voluntary division: Owners may be given the option to divide a series registration into separate individual registrations, retaining the original filing date for each.
• Automatic conversion: The legislation may provide for automatic conversion of series marks into individual registrations.

Until the final rules are published, the specific mechanism remains uncertain. However, the direction of travel is clear.

Strategic Preparation

Brand owners should take the following steps to prepare for the abolition of series marks:

• Audit existing series registrations: Identify which marks in each series are actually in use and which are dormant.
• Prioritise key variations: Determine which versions of the mark are commercially important and should be maintained as standalone registrations.
• Budget for refiling: Plan for the cost of filing individual applications for each mark variation that the business wishes to keep.
• Review use evidence: Ensure that genuine use can be demonstrated for each mark you intend to maintain, as standalone registrations will each carry their own use obligations.

Common Mistakes

• Ignoring the reform timeline: Waiting until the legislation takes effect without a plan risks losing protection for key mark variations.
• Assuming all marks in a series are equally protected: Only marks that have been genuinely used are enforceable. Unused variations within a series are vulnerable.
• Failing to separate valuable marks: If the series is abolished and the owner has not taken action, critical brand variations could fall through the cracks.
• Relying on series marks for new filings: Given the expected abolition, filing new series marks today creates a short-lived registration that will soon need to be restructured.

Key Takeaway

Series marks were a useful cost-saving tool, but their days in the UK system are numbered. Brand owners should audit their portfolios now, identify which mark variations are genuinely in use and commercially important, and prepare to transition to individual filings. Those who plan ahead will maintain continuous protection; those who wait may face gaps in coverage when the reform takes effect.