Practice area

IP STARS Reviews


J A Kemp is a long-established patent and trade mark attorney firm that is highly recommended for IP protection and portfolio management. The firm has an excellent reputation in chemistry, life sciences and engineering. Its European patent attorneys are respected for their drafting and the results they achieve for clients in office proceedings.

The patent leaders in the firm are Patrick Campbell, Samuel Smith, Amanda Simons, Nigel Price, Ravi Srinivasan, Mark Roberts, and John Leeming. Other notable patent attorneys are Colin Merryweather, Sarah Roques, Henry Hunt-Grubbe, Stephen Hodsdon, and Celia Keen. The senior practitioners are supported by a team of associates, trainees, and support staff.

The firm still has a dispute resolution practice staffed with lawyers and several patent attorneys with court litigation qualification. Aaron Newell and James Fish are the key lawyers in the firm. Fish also heads up its trade mark practice. Other key trade mark attorneys in the practice area Tom Albertini, Ben Mooneapillay and Charlotte Stirling. Albertini leads the designs practice.



"They are very creative and conscientious."

"The team frequently acts in high-profile matters and goes straight to the core of the matter and provides clear and concise advice. The team has deep understanding of the client’s business."

"Top-quality people. James Fish, the TM partner, is exceptional. Always helpful, timely and saves us wasting a lot of time and money."

"J A Kemp is very responsive and I really like that when they get me a draft of a brief or some other submission I know it is going to be great work product in near-final form and I am not going to have to make a lot of changes to it."

"They provide great experience in supporting technology transfer, such as working with academics who may be experts in their field but unfamiliar with patents and IP."

"We appreciate their personal approach. They are experts – efficient, honest and trustworthy, and they provide training on new developments in IP."

"They are experts and provide good-quality advice. They also provide extra training about the patenting process via webinars. They are a well-organised firm, helping to make the process smooth."

"They are friendly and efficient with prompt professional responses."

"Their professionals are just the right combination of brilliant, attentive and friendly."

"They are exceptionally thoughtful and resourceful in their approach to handling difficult patent prosecution issues."

"We appreciate their frank and valuable advice."

"The J A Kemp team is very strategic and thinks through the best possible position for its client. When challenged by the client, J A Kemp keenly listens to the issues and alleviates such concerns, all while maintaining the end goal in mind and ensuring the client is comfortable with the position."

2022 client testimonials

"The firm and their practitioners are very experienced in working with academic inventors, something that is crucial in the technology transfer environment."

"Thoroughly professional and excellent when engaging with inventors."

"High-quality work and responsive. Excellent experience."

"I have worked with Kemp since I joined my company as CEO and they are simply outstanding."

"They always take the time to explain things to me clearly and make recommendations that allow me to make the best decision possible."

"They have very experienced patent attorneys who are technically strong with a solid legal background."

"Proactive, reliable and very approachable."

"They are very responsive and strategic."

"The team has so much experience and fantastic understanding of pharmaceuticals and is effortlessly excellent in giving very valuable advice with a real eye for details."

"They have outstanding ability to digest complex legal issues and resolve them. Always available when they are needed and dedicated to the client and the case."

"We chose J A Kemp because it was the best to handle the subject-matter and articulate the rationale for maintaining the patent. Creative thinking around patent strategy."

"Excellent firm with highly-skilled individuals."

"A professional, friendly and client-focused team."

"Responsive, accurate, effective and good communication in explaining patent strategy to scientific managers like me."

"They are thorough, timely and strategic."

"They were very competent in handling our cases."

"The attorneys are very skilled and experienced and therefore able to balance all aspects of complicated oppositions, including the oral proceedings with multiple parties."

"We have a history of good collaboration with several employees in the firm and they produce excellent work products."

2021 client testimonials

“We have known them for a long time and absolutely trust their advice,” says a client.    

“[They have] superior technical expertise and skill and are very reliable,” says another client who received a “prompt, comprehensive service”.


Patent case studies show the firm dealt with drafting, prosecution, and office proceedings for a range of companies. The firm represented AbbVie in EPO oppositions and advised Sanofi on the protection of its drug Plerixaflor. The patent practitioners to watch are Tom Leanse, Guy Brain and Vicki Allen.  The firm hired life sciences patent attorney Ian MacLeod as a partner in January 2020. Heidi Aston left the firm in 2020. Simon Wright left the firm in 2022.

Trade mark

Trade mark case studies show the firm worked on strategy, prosecution and disputes. Royal British Legion, Diversey, Imperial War Museums and Roja Parfums Holdings are among the companies the firm advised on filing and prosecution matters. In litigation, the trade mark team represented companies such as GW Pharma. IP lawyers Tom Carver and Alan Bryson left the firm in 2020.