Mewburn Ellis is highly recommended for patent protection and portfolio management work, especially in life sciences and chemistry. The firm also has expertise in ICT and engineering. The firm has recently invested in its patent litigation practice, adding to its team of patent attorneys who are also qualified to conduct court litigation. Its trade mark team is also recommended.
Notable patent attorneys: Richard Clegg, Richard Johnson, Jeremy Webster, Graeme Moore, Simon Kiddle, Emily Hayes, Matthew Naylor, Nick Sutcliffe, Chris Denison, Stephen Gill, Simon Parry, and Robert Watson.
Notable trade mark attorneys: Andy King, Rebecca Anderson-Smith, and Jacqueline Pang.
Notable lawyers: Sean Jauss, Kate O’Rourke, Camilla Balleny, and Amy Crouch.
Jauss, who leads the legal practice, handles patent disputes and transactions.
2025
"[They provide] very sharp advice and a very efficient strategy."
"Open and transparent communication combined with a flexible and pragmatic attitude and a sound scientific understanding."
A client likes that the "team remains stable".
"Very efficient and rapid responses and accommodating when additional support is required. Very proactive."
"Excellent attention to detail and excellent strategic advice. Our clients prefer to use them for their applications in the EPO."
"Mewburn Ellis has very good patent attorneys, but they also have a commercial focus and are able to provide focused advice that is directly applicable to our strategic needs."
"They are proactive, bright, constructive and able to provide the necessary service by putting additional attorneys and paralegals to work on our behalf."
"Professional, fast, and problem-solving orientated."
"A large team covering all areas of technology with high levels of technical expertise and strong commercial considerations."
Another client appreciates the team's "responsiveness and collaborative nature".
"They provide timely, excellent advice on navigating complex patent prosecution cases in the EPO."
Simon Kiddle
"Simon Kiddle is outstanding. He can operate in a multitude of subjects, which is critical when filing patents for chemistry inventions. Simon is exceptional and super pragmatic at navigating the examination process and has an incredible memory for previous proceedings in some of our earlier patents. I recommend him to anyone in life sciences who needs a patent lawyer."
2023
"We appreciate that their advice is timely, well-thought out, and offers a variety of potential legal solutions to consider."
"They are professional, factual and easy to deal with."
"They are high-quality, commercially minded, patent attorneys with a broad range of technical expertise and lots of experience."
"They are professional, friendly, and produce well-structured patents."
"They are very efficient, and maintain a high level knowledge and understanding of both our patent portfolio and our underlying science. They provide the service of attorneys dedicated to our work over an extended period of time."
"They provide excellent customer service and rapid turnaround of high-quality advice. "
"We appreciate their knowledge, timely work, and customer service."
"They are all efficient and good communicators, from the lead partner to the paralegal and administrative assistants."
"They are always available and manage our global portfolio efficiently."
"They are available, responsive, direct and efficient."
2021
A client commended the firm for its “excellent responsiveness, execution and clarity”.
“Quick response, first-rate advice typically within one day,” says a patent client.
“They provide pragmatic, coherent advice.”
A long-standing client said: “They have provided us with very good services regarding our IP filings and prosecution in Europe. They provide very detailed explanation understandable to us.”
A brand owner client said: “Mewburn Ellis provide very concise advice and options. The clarity is great and really helpful to make decisions on behalf of the company. The people are also very nice, a pleasure to deal with.”
One client explained why they use the firm: “Mewburn Ellis is our go-to firm for European patent prosecution, advice and opposition. We entrust our high-stakes matters with the firm because of their sophisticated practice, excellent partners and associates, deep knowledge in the life sciences area and their proven track record. They have a great track record for timely work that comes in on budget.”
Another patent client said: “The patent professionals at Mewburn are always up-to-date on European law and provide expert strategy for patent prosecution in Europe.”
A client used the firm because of its “reasonable pricing structure, high-quality drafting and flexibility”.
Case studies show patent prosecution, portfolio management, and office proceedings work. Its work for NGK Insulators, Transonic Systems and Hitachi led to instructive decisions from the EPO Board of Appeal. Other clients include Rolls-Royce SMR, Creo Medical Group, Bristol Myers Squibb, Cortigent, Roche, and Medical Components.
The firm hired Camilla Balleny and Amy Crouch in 2025 to launch its patent litigation practice. Follow MIP’s coverage of the firm here.
Case studies show trade mark strategy, protection, and disputes work. The team collaborates with colleagues, e.g. Jan Rether, in Munich for EU trade mark work. O’Rourke, who is dually qualified as a trade mark attorney and solicitor, now serves as a consultant.