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Ian MacLeod

Partner, European and UK Patent Attorney

Ian is a European and UK Patent Attorney. He has extensive experience of coordinating the drafting, prosecution and defence of large global patent portfolios. Having helped his clients obtain the grant of commercially important patents, he frequently defends them at the European Patent Office, including in multi-party cases up to the Boards of Appeal. He is also experienced in handling multi-jurisdiction litigation actions across Europe and around the world, including up to the Korean Supreme Court. In addition, Ian advises on complex freedom to operate and infringement analyses and assists with licence negotiations.

Ian handles a wide range of biotechnological subject-matter, with particular expertise in bacterial products targeting the microbiome, vaccines, antibody therapeutics, biomarker diagnostics, and antisense nucleotides.

Ian joined J A Kemp in 2020 after working for over ten years at another top tier firm. Before joining the profession, Ian studied Natural Sciences at Cambridge University, specialising in Genetics, and undertook a PhD at the Cambridge Institute for Medical Research. His PhD research characterised the toxic polymerisation of mutant neuroserpin, which causes a rare dementia, through the development and utilisation of a Drosophila model of the disease.

Ian is recommended by The Legal 500 and based in the firm’s London office.




University of Cambridge, BA in Natural Sciences (Genetics); University of Cambridge, PhD in Genetics and Structural Biology

Professional Qualifications

European Patent Attorney; UK Chartered Patent Attorney

Membership of Professional Bodies

Fellow of the Chartered Institute of Patent Attorneys (CIPA); Member of the Institute of Professional Representatives before the European Patent Office (EPI)



Tel: +44 20 3077 8600

80 Turnmill St,

Contact Ian

If you wish to talk to Ian MacLeod, please send an email directly to

or call +44 20 3077 8600

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