Supreme Court backs former employee in trade secrets case

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Supreme Court backs former employee in trade secrets case

The Court of Appeal was right to find that a former employee of mosquito net maker Vestergaard was not liable for breach of confidential information, the UK Supreme Court has ruled

In a unanimous decision, the five Supreme Court judges found that Trine Sig was not liable as she did not learn of any relevant trade secrets while employed by Vestergaard, and was not aware that such secrets were being used by an employee of her company.

Writing the Court’s judgment, Lord Neuberger said that the law must maintain a balance between protecting trade secrets and not unreasonably inhibiting competition in the marketplace. He said that IP protection is vital to economic prosperity but added: “On the other hand, the law should not discourage former employees from benefitting society and advancing themselves by imposing unfair potential difficulties on their honest attempts to compete with their former employers.”

The dispute between these two parties arose from a complex trade secrets case, in which the Court of Appeal had upheld a ruling that Vestergaard’s trade secrets were used by competitor Bestnet Europe.

Vestergaard was represented by barristers Mark Platt-Mills QC and Thomas Moody-Stuart and law firm Field Fisher Waterhouse while the respondents were represented by Alastair Wilson QC and George Hamer and law firm McGuire Woods London.

more from across site and SHARED ros bottom lb

More from across our site

The variety of winners demonstrates that the UPC is now a core benchmark rather than an experimental consideration, while junior lawyers are becoming more deeply involved in key work
The Indian government announcing a fee waiver for sports-related IP registrations, and the US adding the EU to its IP 'watch list' were also among major developments
Sources say the judge could return to a disputes or mediation-focussed role, though others have questioned whether the Texas court will remain a litigation hotspot in his absence
Sheppard, which has hired 14 IP partners in the last 12 months, has cited client demand for expert counsel in SEP, ITC, and district court disputes
Tingxi Huo joins our ‘Five minutes with’ series to discuss boosting the value of clients’ IP and the importance of reflection
Hefty legal teams assembled for a three-day hearing in what was the court’s first foray into SEPs since Unwired Planet v Huawei
IP firm's new base will be located inside the tallest office space in the UK's ‘second city’
Practitioners at four firms across Asia and Europe share the do’s and don’ts of mindful networking ahead of the INTA Annual Meeting
Brand Action explains why the IP community can be a force for good in the world as thousands of professionals prepare to head to London for INTA’s Annual Meeting
The firm, which has also hired a senior trademark leader to lead operations in the region, believes greater China to be one of the most important IP jurisdictions
Gift this article