European and UK Patent and Trade Mark Attorneys

Independent Thinking. Collective Excellence.

  • London
  • Paris
  • Oxford
  • Cambridge
  • Munich

Who We Are

J A Kemp is a leading firm of European Patent and Trade Mark Attorneys. We combine independent thinking with collective excellence in all that we do. 

The technical and legal knowledge that we apply to the protection of our clients’ patents is outstanding in its breadth and depth. With around 100 science and technology graduates in the firm, including 50 PhDs, no area of science or technology is outside our scope. Our Patent Attorneys have collective in-depth expertise in patent law and procedure in every country of the world.

The team of professionals who advise our clients on trade mark and design matters have backgrounds in major international law firms and hold qualifications as Chartered UK Trade Mark Attorneys, Solicitors and European Trade Mark Professional Representatives. Dedicated to this specialist area of intellectual property protection, the team has the expertise and resources to protect trade marks and designs in any market worldwide.

Our offices are located in London, Paris, Oxford, Cambridge and Munich. Our clients are based throughout the world.

We are ranked in tier 1 by all major legal and intellectual property directories.

Our People

What We Do

Our European and UK Patent Attorneys draft, file and prosecute patent applications in Europe and worldwide. J A Kemp has a global reputation for its expertise in handling patent oppositions and appeals before the European Patent Office. We also obtain patent protection in national markets, including the UK. We add value to our clients’ business by advising on patent strategy and the management of patent portfolios in individual countries, regionally or worldwide.

Our trade mark specialists advise on trade mark selection and strategy. J A Kemp is known for its track record of success in filing, defending and opposing trade mark applications in Europe and throughout the world. We are adept both at securing trade mark protection in national markets and at managing filing and prosecution programmes on a regional or global scale.

We handle all aspects of design protection within Europe and worldwide.

We provide expert litigation support services for intellectual property matters before the European and UK authorities and in the relevant courts and appeal courts. 

Our Specialisms

Why Choose Us?

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.

Managing Intellectual Property

J A Kemp was awarded "Best UK Patent Prosecution Firm" at the Managing Intellectual Property Awards 2020.

Chambers and Partners

 "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."

IAM Patent 1000

"Unified team culture, deep concentration of technical expertise and ability to effortlessly switch to another gear in times of extreme need.”

Managing Intellectual Property

“J A Kemp is second to none in my experience.”

Overseas Attorney Firm

"I don’t work with anyone as good.  I recommend J A Kemp because it’s good for my clients."

J A Kemp Client

"If I want an opinion I’ll go with J A Kemp."

Chambers and Partners

"They identify with our priorities, are immediately responsive and generate confidence in their technical ability."

World Trademark Review 1000

“A very sharp firm, nimble on its feet and able to really deliver, J A Kemp is timely, professional and excellent value for money.”

Managing Intellectual Property

"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." 

IAM Patent 1000

"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."

Chambers and Partners

"I am really impressed with them.  The team is very proactive, strategic and thinks about the best way to move forward."

The Legal 500

"J A Kemp’s team of trade mark attorneys are true experts and above all extremely commercial."  

IAM Patent 1000

"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 Client

"J A Kemp gives good, clear, commercial recommendations."

Overseas Attorney Firm

"J A Kemp is my preferred firm because the level of service and understanding of the client’s technology is great."

World Trademark Review 1000

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 Client

"J A Kemp has a very 'can do' attitude for jobs which are complex."

Overseas Attorney Firm

"These are some of the most detailed and thorough instructions that I have ever seen. They evidence a keen understanding of US practice."

IAM Patent 1000

"J A Kemp is extremely knowledgeable and does a fantastic job."

Overseas Attorney Firm

"I cannot thank you enough for your expert advice and careful strategic thinking in this matter."

J A Kemp Client

"We want the best protection available and I give J A Kemp the highest marks possible."

Work At J A Kemp

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