2026

"The team provides timely and very thoughtful counsel on European practice, and acts cheerfully and professionally even with tight deadlines. My interactions are primarily with Peter Finnie and Fiona Law, who are brilliant patent attorneys who excel at client service."

"Michael Pears at Potter Clarkson has represented one of my important clients in EP prosecution for more than a decade. I can count on Michael for insightful collaboration in European prosecution. Michael has also strategically represented this client in both offensive and defensive patent oppositions in Europe, contributing both to opposition practice and strategy."

"I have also worked with Mark Kramer on negotiating and drafting a complex scientific collaboration and license agreement. Mark was instrumental in helping to bring both parties together and draft language for the agreement reflecting their mutual understanding."

"They feel as though they are in-house; they know our products, strategy and objectives as well as we know them ourselves, so their advice is excellent."

"Quick and reliable answers. You feel confident you are getting a strong strategy, even in unique situations."

"Thoughtful advice with various options to meet the needs of clients with varied risk appetite and budget."

"What sets Potter Clarkson's IP litigation service apart is their integrated single-source model: patent, trade mark and design attorneys working seamlessly alongside specialist IP solicitors within one team. This eliminates the friction of coordinating multiple firms and results in advice that is both technically rigorous and commercially sharp."

"They have a highly professional legal team that prioritizes clients and spares no effort to prevent any damage to their intellectual property rights."

"The strength of Potter Clarkson's prosecution and filing team lies in its people and its structure. The team brings together trade mark attorneys and knowledgeable paralegals in a single, cohesive unit, which is unusual in the market and highly effective."

"Potter Clarkson's IP filing, prosecution and administration team delivers precise, efficient work with proactive communication and rigorous attention to detail, ensuring smooth and reliable management of all IP portfolio matters."

Peter Finnie

"Peter is an incredibly insightful and creative patent attorney, one of the best European patent attorneys with whom I have ever worked. His colleague Fiona Law is similarly talented."

Sarah Talland

"Sarah is communicative and personable - she does a great job explaining items that may be more complicated or nuanced than they are in our local jurisdiction."

2025

"I think they are among the best."

"Potter Clarkson is excellent in patent litigation coordination and brings the right teams together."

"Potter Clarkson has a wonderful team experienced in trademark prosecution and litigation matters. Being a very good partner with Potter Clarkson for more than ten years, we have been impressed by Potter Clarkson colleagues’ outstanding professional skills in handling various complicated IP cases."

"Potter Clarkson’s reliable services have contributed tremendously to our Chinese clients’ success in the UK and EU. Our Chinese clients’ satisfaction and continued use of Potter Clarkson colleagues’ services best endorse their quality services."

"Very well-regarded firm and excellent experience working with them previously."

"Responsive, fair cost, direct and clear advice where needed."

"We [like] their ability to manage IP litigation projects involving multiple jurisdictions across Europe and their skill in both procedural strategy and fostering business relationships. They are also a very pleasant team to work with."

"We have worked with them in UK and UPC matters and have found them to always give sound advice."

"Potter Clarkson attorneys are experts in patent prosecution and opposition practice as well as with patent licences and transactions."

"They provide advice and communicate on the right level. Always accessible, and they have a problem-solving attitude."

"The combination of excellent technical skills across all IP-related disciplines and a strong underlying commercial approach prevents unnecessary expenditure."

"Effective, accessible and good at communication."

"The patent attorneys are competent and experienced and make sure everything runs smoothly."

Mark Kramer and Mark Nichols

"As well as being excellent lawyers, Mark Kramer and Mark Nichols are great with client management and providing cost-effective solutions. I know they will never litigate for the sake of it and really have clients' best interests at heart."

"Always very efficient, quick to respond, and offering recommendations in an often complex subject to understand and navigate around."

"[They are] able to explain the legal parts very simply and [take a] practical approach to the IP strategy for a small-scale company."

"Professional, timely advice and quality of advice are all satisfactory."

"Open, friendly, very knowledgeable, and strategic."

"They adjust easily to our working model and are very flexible. They offer a great service and respond quickly to our requests."

"They listen to us and have a wealth of experience which helps us to think more broadly."

"[They] provide personalised counsel, timely responses, and business-focused guidance."

"The team are articulate and accurate and are always trying to find the best outcome for the client."

"Friendly and easygoing, yet professional and efficient. Good communicators."

"Professional excellence and clear communication. They are nice as well."

"They have a highly professional legal team that prioritises clients and spares no effort to prevent any damage to their intellectual property rights."

"They are extraordinarily creative, imaginative, and thoughtful, and of course intimately knowledgeable about all aspects of European patent practice."

[They provide] technically strong, careful analysis."

"We have been working with Potter Clarkson for several years because they have always been highly reliable, and our cooperation has always worked flawlessly."

"Potter Clarkson has reliable and responsible lawyers."

"They are flexible, always give sound advice, and are proactive. Their reports are actually useful."

"They are easy to work with and strategic. We have a great partnership together."

"We strongly recommend Potter Clarkson. This UK-based law firm has been a top player in the IP field, helping our clients win big in many industries. They’re not just good in one area—they handle everything from tech patents and brand protection to media deals. No matter the industry, their lawyers know how to solve problems and get results."

Another client values the team's "expert advice and management of expectations".

"Their attorneys have extensive and considerable experience in handling complex and sophisticated matters."

"They have a strong sense of responsibility and solid professional knowledge. Many clients have described them as real pleasures to deal with and as someone who really understands their business."

Keeley Williams

"Keeley Williams has provided continuity of service and clarity on any questions."

2024

"They are reputable for trademark work; competent and cost-efficient. They are quick to respond with very to-the-point advice."

"We have known Potter Clarkson for a while and are very happy with their services. I like their responsiveness and quality of work."

"We have invited them to meet the client to submit a proposal as we had a great experience working with them in the past. They build a very good relationship with colleagues, and they have very good patent attorneys and experienced and strategic litigators."

"They are an easy to work with, nice team."

"They are used to handling transnational cases. They are well organized and very efficient. The advice was accurate."

Georgia Carr

"Very knowledgeable for trademark work."

Nick McDonald

"Provides strategic advice in cross-border patent litigation matters."

"Nick is simply outstanding and a really nice guy."

2023

"They can provide the competencies, knowledge and experience we need. They also have deep background knowledge of our company and technologies. "

"It is a team with high professionality, rich experience and deep knowledge in our technical field. The smooth, clear and open communication is very appreciated. "

"First of all, we really appreciate their understanding of the field. We have spoken now to a few different teams in this space, before we settled on Potter Clarkson, and no one really picked up on the intricacies of our strategy or understood the design of our products as quickly as they did.

"They have been extremely generous with their time, and very professional in every interaction. Finally, they demonstrated from the beginning a flexibility that is incredibly important when working with early stage startups. Not only in terms of budget and payment terms, but almost more importantly in adapting the drafting and filing strategy to the way the company and its priorities evolve. On my limited experience they really are unrivalled in the service they provide to startups, particularly in this technology space."

"Their team is particularly knowledgeable of our research space, and their understanding of it is one of the main aspects driving us to work with them. On a personal level, they are approachable and easy to talk to, very responsive, and always make sure they communicate with us in the clearest possible terms. We have often gone to them with questions about our IP strategy and have always received responses almost immediately in a clear and efficient way."

"The firm has been strategic and commercially astute in all aspects of intellectual property matters that they have overseen or been involved with for our business in the UK. They have provided a first-class service since their appointment and have been instrumental in progressing valuable intellectual property rights we developed in the UK.

"They have been thorough, insightful and responsive to our needs. In particular, I have worked with Oliver Laing closely since their appointment and always found him to be a sound and strategic leader. His ability to combine strong technical yet practical direction with the details of management of his team allowed him to deal with our instructions extremely competitively and efficiently, which has been excellent value for money, whilst still being extremely responsive to our entire team."

"They are open, take the time to understand us and our needs, and deliver consistently reliable advice."