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Jemma Costin
Solicitor
Dispute Resolution, Technology, Media and Telecoms
She has acted for clients in the media, retail, technology, hospitality and video games sectors in proceedings before the High Court and Intellectual Property Enterprise Court, as well as at pre-action and settlement stages.
Her experience includes copyright, trade mark and design disputes, breach of contract claims, shareholder and partnership disputes, defamation and reputation management and contentious data protection matters. She also completed a six-month secondment to a global video games company, advising on IP, commercial and consumer law issues in the interactive entertainment sector.
Jemma’s academic writing on IP enforcement in video games was published in the Interactive Entertainment Law Review (2026, Vol 9(1)), and she has lectured in intellectual property law at Goldsmiths, University of London.
Before her legal career, Jemma completed a degree in Music and maintains a strong interest in the creative and technology sectors.
Work highlights
COPYRIGHT AND DESIGN RIGHT CLAIM
Supported the Defendants in a complex copyright and design right claim in the Intellectual Property Enterprise Court related to the hospitality sector, assisting from pleadings through to settlement
ENFORCEMENT
Acted for a global fashion brand in trade mark oppositions and anti-counterfeit enforcement
BREACH OF CONTRACT AND COPYRIGHT DSIPUTE
Advised on a breach of contract and copyright dispute in the Intellectual Property Enterprise Court regarding an NFT viewer, achieving the withdrawal of a default judgment application
MULTI-ANGLED CLAIM
Supported the Defendants in a multi-issue misuse of private information, breach of confidential information, breach of data protection claim
Recent articles
Insights
Unpacking the High Court’s dismissal of privacy claims arising from unlawful information gathering in Baroness Lawrence v Associated Newspapers [2026] EWHC 1637.
18/09/2026
Insights
Commercial Court transparency is entering a new era. A two-year pilot scheme (“the Scheme”) was introduced on 1 January 2026.
07/10/2026
Announcements
DMH Stallard has been recognised as a leading law firm in the latest edition of The Legal 500 2027 directory.
02/10/2026
Insights
Our commercial business lawyers highlight the steps you can take now to prepare for subscription rule changes coming in January 2027.
01/09/2026