IAM Patent 1000: The World's Leading Patent Professionals 2026

IAM’s annual guide is one of the most respected in the intellectual property sector. Its recommendations are based on extensive research, including feedback from clients and peers across the globe. We’re pleased to be recognised not only as a firm but also for the outstanding work of many of our individual practitioners.

We are delighted to have been awarded a Gold ranking for patent prosecution in England.

Our litigation and transactional practices were also recognised, with Bronze rankings in both categories.

Internationally, our patent prosecution practice received a Silver ranking in Sweden and a Bronze ranking in Denmark. We are also proud to hold a Silver ranking before the European Patent Office (EPO).

Alongside these firm-wide achievements, a number of our professionals received individual recognition across the various categories.

England - Prosecution‍

• Gold: Peter Finnie, Fiona Law
• Silver: Mark Didmon, Caroline Marshall, Rob Pugh
• Bronze: Dave Clark, Charlotte Crowhurst, Sara Holland, Saiful Khan, Michael Pears, Steve Smith, Esme Swindells

England - Litigation

• Bronze: Mark Kramer, Oliver Laing, Richard Roberts
• Next Generation: Mark Nichols

England - Transactions

• Recommended: Dave Holt, Mark Kramer, Oliver Laing

Sweden - Prosecution

• Silver: Chris Cadman
• Bronze: Jesper Sellin

Denmark - Prosecution

• Bronze: Benjamin Hoffmann, Camilla Kiørboe
• Next Generation: Andreas Lauge Christensen

European Patent Office (EPO)

• Recommended: Peter Finnie, Philip Thomas

What IAM had to say

“Potter Clarkson provides full-service patent support, from pre-filing advice through drafting, filing, prosecution and post-grant matters, as well as advice on litigation and transactions. The team combines in-depth knowledge and experience with a collaborative approach, listening to clients and asking the right questions to deliver practical solutions. It operates with an international outlook and strong European focus, delivering a professional service that is consistently high quality and focused on achieving the right results for clients.” – IAM UK Guide

"Potter Clarkson has quickly established a strong presence in Sweden through its wider Anglo-Nordic platform, bringing a distinctly international perspective to complex IP work. The team combines technical depth with commercial clarity, supporting clients from early-stage innovators to global players across the full lifecycle of patent development. Its cross-border model is a key differentiator, enabling coordinated portfolio management and filing strategies across jurisdictions, with particular strength in aligning European and US approaches from the outset.” – IAM Sweden Guide

"Potter Clarkson operates a cross-border IP practice that is particularly well suited to managing complex patent portfolios spanning multiple jurisdictions. With closely coordinated teams across the UK and Scandinavia, the practice delivers aligned prosecution strategies across markets, including US expansion. Its strength lies in combining technical capability with strategic oversight, enabling it to support clients in navigating sophisticated, multi-jurisdictional filing programmes. The team’s sector breadth allows it to engage with technically demanding subject matter while maintaining a clear focus on value creation and portfolio optimisation. Alongside its core work, the practice has invested in practical tools to enhance IP management, including a digital solution designed to help clients systematically capture and manage confidential know-how as part of a broader protection strategy." – IAM Denmark Guide

These recognitions reflect the expertise, passion and dedication of our people across Europe. We’re grateful to our clients and peers for their trust and continued support. You can read the full IAM Patent 1000 2026 review of Potter Clarkson here.