Tom Leanse

Senior Associate, Patent Attorney


Tom is qualified as a European and UK patent attorney and has over ten years’ experience working in private practice for clients ranging from SMEs to multinationals, across all areas of chemistry. He has particular experience in small molecule pharmaceuticals and medical devices, as well as chemical technologies relevant to the electronics sector including organic light-emitting devices, liquid crystal displays, and secondary batteries. Tom also has an interest in sustainable technology and works with a number of clean tech firms in sectors such as biodegradable packaging for the food and drink industry and low emission vehicles.      

Tom's practice involves drafting, filing and prosecuting UK and European patent applications, as well as handling large patent families across many countries. He also provides advice on freedom to operate and validity, and represents clients in oppositions and appeals before the European Patent Office.


Tom graduated from Durham University with a first class degree in Chemistry, specialising in medicinal chemistry in his final year.

Professional Memberships

  • Fellow of the Chartered Institute of Patent Attorneys
  • Member of the European Patent Institute

Recognition and Awards

  • Managing Intellectual Property Stars - Rising stars, 2018