Ranked in tier 1 by The Legal 500 and Chambers and Partners, we are one of the largest UK and European Patent and Trade Mark Attorney firms, with offices in London, Oxford, Cambridge, Paris and Munich. Established in the 1940s by our founder, John Arthur Kemp, we have grown to become one of a handful of leading UK firms with a strong international practice.
On 1 October 2019 the firm became a Limited Liability Partnership. On this date, J A Kemp’s business, contracts and client monies were all transferred to J A Kemp LLP.
The breadth and depth of our technical knowledge relevant to patents is outstanding, with over 80 science and technology graduates in the firm including over 40 PhDs. No area of science or technology is outside our scope.
Our trade marks team comprises senior professionals with backgrounds in major international law firms. The team has the expertise and resources to handle any trade marks matter.
We draft, file and prosecute patent applications in the UK, Europe and the rest of the world. We handle patent oppositions and appeals within Europe, especially before the European Patent Office. We add value to your business by advising on patent strategy, such as where and when to file applications. We can help you to manage your patent portfolios in individual countries, regionally or worldwide.
We advise on trade mark selection and strategy and we file, defend and oppose trade mark applications in the UK, Europe and the rest of the world. We can obtain global protection for your trade marks through international applications before the World Intellectual Property Organization (WIPO) and by instructing filing and prosecution programmes worldwide.
We handle all aspects of design protection in the UK, Europe and the rest of the world.
We provide intellectual property litigation support services in matters in the High Court of England and Wales, the Intellectual Property Enterprise Court, the UK Intellectual Property Office and the European Union Intellectual Property Office, plus their respective appeal courts.
We set great store by what our clients say about us. These comments are all from leading legal and IP directories or provided directly by our clients.
J A Kemp was awarded "Best UK Patent Prosecution Firm" at the Managing Intellectual Property Awards 2020.
"J A Kemp demonstrates excellent technical prowess matched by legal sophistication. Unlike many other European patent attorneys, I view the partners there as collaborators rather than as service providers."
"Unified team culture, deep concentration of technical expertise and ability to effortlessly switch to another gear in times of extreme need.”
“J A Kemp is second to none in my experience.”
"I don’t work with anyone as good. I recommend J A Kemp because it’s good for my clients."
"If I want an opinion I’ll go with J A Kemp."
"They identify with our priorities, are immediately responsive and generate confidence in their technical ability."
“A very sharp firm, nimble on its feet and able to really deliver, J A Kemp is timely, professional and excellent value for money.”
"Clients are most impressed with the work of J A Kemp. The team are highly responsive, intensely hard-working, and uniformly thoughtful in their handling of prosecution and post-prosecution matters (e.g. oppositions). They are proactive and induce a high degree of confidence."
"J A Kemp offers some of the finest patent services in Europe, delivers cast-iron protection for inventions of all types and conducts sterling opposition and appeal work at the EPO."
"I am really impressed with them. The team is very proactive, strategic and thinks about the best way to move forward."
"J A Kemp’s team of trade mark attorneys are true experts and above all extremely commercial."
"The whole team is extremely knowledgeable of the underlying subject matter and also of EU patent practice - they do a valuable analysis of the specifications to optimise the patent’s strength."
"J A Kemp gives good, clear, commercial recommendations."
"J A Kemp is my preferred firm because the level of service and understanding of the client’s technology is great."
J A Kemp is "a go-to for UK and European trademark matters – its expert practitioners provide practical advice quickly and for a fair price, and impress at every turn".
"J A Kemp has a very 'can do' attitude for jobs which are complex."
"These are some of the most detailed and thorough instructions that I have ever seen. They evidence a keen understanding of US practice."
"J A Kemp is extremely knowledgeable and does a fantastic job."
"I cannot thank you enough for your expert advice and careful strategic thinking in this matter."
"We want the best protection available and I give J A Kemp the highest marks possible."