UK Trademark oppositions doubled post-Brexit - Official IPO data
When the UK left the EU trademark system in January 2021, the immediate effect was a surge in new UK trademark filings. Businesses that had relied on EU-wide registrations suddenly needed separate UK protection.
But filings were only the first wave. The second wave - conflicts and oppositions - followed with a delay. Official IPO data obtained through Freedom of Information requests now shows just how significant that wave has been.
The numbers - period ending June each year:
2019: 719 oppositions (683 UK, 36 international)
2020: 683 oppositions (650 UK, 33 international)
2021: 790 oppositions (747 UK, 43 international)
2022: 1,616 oppositions (1,522 UK, 94 international)
2023: 1,177 oppositions (1,045 UK, 132 international)
In the year ending June 2022, the IPO recorded 1,616 trademark oppositions. That is more than double the 790 from the previous year - a 104% increase in a single year.
To put that in context, opposition volumes had been stable at around 680 to 720 per year from 2019 to 2021. The 2022 spike represents a structural break, not normal fluctuation.
Why oppositions surged
The mechanism is straightforward. More trademark filings mean more marks on the register. More marks on the register mean more potential overlaps. More overlaps mean more conflicts. More conflicts mean more oppositions.
UK trademark applications surged from around 160,000 in 2020 to nearly 197,000 in 2021 as businesses rushed to secure UK-specific protection after Brexit. Many of these applications were for marks that had previously coexisted under the EU system without conflict, but now competed directly in the UK-only register.
Additionally, businesses that had never needed UK-specific registrations before were filing for the first time. Some filed marks that inadvertently conflicted with existing UK registrations they were not aware of - because they had never needed to check the UK register before.
International oppositions growing fastest
While UK domestic oppositions more than doubled, international oppositions grew even faster in percentage terms. International designations - trademark applications routed through the Madrid system - generated 132 oppositions in the year ending June 2023, up from just 43 in 2021.
That is a 207% increase in two years. International brands entering the UK market are increasingly running into existing UK rights holders, and the conflict rate is accelerating.
The 2023 correction - and what comes next
Opposition volumes dropped from 1,616 to 1,177 in the year ending June 2023. This is likely a correction from the 2022 spike rather than a return to pre-Brexit norms. At 1,177, oppositions remain 49% higher than the 2019–2021 average.
With UK trademark filings reaching 203,187 in 2025 - up another 17% on the previous year - the underlying driver of opposition activity (volume of potentially conflicting marks) continues to grow.
The pre-Brexit baseline of roughly 700 oppositions per year appears to be permanently behind us. The new normal is likely in the range of 1,000 to 1,500 per year, with further growth as filing volumes increase.
What this means for trademark owners
If you registered a UK trademark before 2021, the landscape around your mark has changed substantially. The number of new filings in your class has likely increased. The number of potentially conflicting marks has grown. And the probability that someone files a mark similar to yours is higher than it was five years ago.
The 2-month opposition window has not changed. It is still two months from publication to oppose. But the volume of marks you would need to check has roughly doubled.
Unless you are reading the Trade Marks Journal every week - which publishes an average of 3,900 new applications per issue - you will not know when a conflicting mark appears.
How to stay protected
TMGuard monitors the IPO Trade Marks Journal every week automatically. When a new filing matches your trademark — by name, by sound, or by the goods and services it covers - you receive an alert with a risk score, Companies House intelligence on the applicant, and a countdown to your opposition deadline.
The opposition data is clear: acting within the 2-month window works. 40% of opposed applications are withdrawn by the applicant. But you can only act if you know the conflict exists.
Check your brand against 2.8 million UK trademarks - free at tmguard.uk/check.
