Partner, Patent Attorney


Stephen works principally in the materials, engineering and chemicals sectors and carries out patent drafting, prosecution and opposition work.  He leads a team of attorneys that drafts around 100 patents each year for a global aeronautics firm, while also specialising in rail transport, power generation, mechanical/structural engineering, medtech, cleantech and oil/gas.

Areas of Expertise

  • Gas turbines and turbochargers, including associated control and monitoring systems
  • Electrical power systems
  • Oil field technologies
  • Nuclear power generation
  • Surface coating and additive manufacturing technologies
  • Alloys
  • Imaging systems


Stephen’s clients cover a diverse range of large, multinational and medium-sized companies in the UK, Japan and the US, as well as research institutes, universities and SMEs. He is a regular visitor to Japan.


Stephen has a degree and PhD in materials science from the University of Cambridge. He undertook post-doctoral research at the École Polytechnique Fédérale de Lausanne in Switzerland and has industrial R&D experience. He joined Mewburn Ellis LLP in 1996, qualifying as a Chartered Patent Attorney in 2000 and a European Patent Attorney in 2004. He joined the partnership in 2005.


Stephen is named a Patent Star in Managing Intellectual Property: IP Stars 2023.

Stephen has frequently appeared in the IAM Patent 1000 guide for patent prosecution, and is listed as a 'Patent Star' in Managing Intellectual Property’s IP Stars, 2014-2022. Stephen has also been recognised as a 'key lawyer' in the 2021 edition of The Legal 500.

"Has aeronautics, rail transport and power generation down cold" - IAM Patent 1000, 2021

Stephen "leads a team that drafts around 100 patents each year for a global aeronautics company" - IAM Patent 1000, 2020.

He has a “widely admired” filing practice - IAM Patent 1000, 2019.