Nick Leslie



Nick is an associate in our Litigation team, focusing on intellectual property disputes. He is a dual-qualified English solicitor (2018) and Canadian lawyer (2016), with considerable litigation experience in protecting and enforcing the full range of intellectual property rights. He has acted for clients in the English High Court, the English Court of Appeal, and the IPEC, recently acting for the defendant in Icescape v Ice-World International: the first case to apply the doctrine of equivalents following Actavis v Eli Lilly.

Nick’s non contentious work includes assisting clients with commercial arrangements for the creation and exploitation of intellectual property rights, including licences, assignments and development agreements. Nick regularly advises SMEs and start-ups on preliminary aspects of development work, including third party contractual arrangements and the protection of confidential information. Nick has considerable experience in the negotiation and preparation of international licence arrangements for trademarks and patents.

Nick recently completed the postgraduate diploma in Intellectual Property Law and Practice at the University of Oxford.


Representative Matters

  • Horsham Nutraceuticals Ltd & Anor v Manna Pro Products LLC [2019] EWHC 1935 (Ch)
  • Glew & Others v Amro Biotech & Others [2019] EWHC 3183 (Ch)
  • Icescape Ltd v Ice-World International BV and ors [2018] EWCA Civ 2219 – patent validity and infringement decisions in which the Court of Appeal decided on the application of G2/98 Same Invention concerning priority date, and applied the doctrine of equivalence following the UK Supreme Court’s decision in Actavis UK Ltd v Eli Lilly & Co


Qualifications and Memberships

  • International Association for the Protection of Intellectual Property


Higher Education

  • Postgraduate Diploma in Intellectual Property Law and Practice, University of Oxford (2020)
  • Masters of Laws, Intellectual Property Law, Queen Mary University of London (2017)
  • Bachelor of Laws, Cardiff University (2014)
  • Bachelor of Arts (Biology & Economics) Colgate University (2010)

Contact details

St Bride’s House
10 Salisbury Square
United Kingdom

+44 (0)20 7632 7200


dispute resolution