Firm Profile > J A Kemp > London, England

J A Kemp

PATMA: Patent attorneys Tier 1

J A Kemp demonstrates particular strength in the pharmaceutical, engineering and university sectors and is especially well known for its high-profile caseload acting for US and Japanese clients. EPO patent filings and oppositions account for a significant portion of the practice. The group's track record in successful patent restoration and its experience in supplementary protection certificates are other stand-out features. Engineering and IT practice head Michael Nicholls, chemistry and pharmaceutical practice head Celia Keen and biotechnology and life sciences practice head Patrick Campbell form the spine of the practice. Pharmaceutical and cleantech expert Ravi Srinivasan is another key practitioner. Patent and trade mark attorney and litigator Stephen Hodsdon joined in Cambridge from Mewburn Ellis LLP.

Practice head(s):

Michael Nicholls; Celia Keen; Patrick Campbell

Other key lawyers:

Key clients





PATMA: Trade mark attorneys Tier 1

J A Kemp's caseload increasingly contains trade mark prosecution for major pharmaceutical and medical device, especially medtech, clients, as part of an overall sectorially diverse portfolio. In addition to a busy drafting and filing practice, the team assists a string of major international players, often longstanding clients of the firm, with opposition proceedings and appeals. James Fish, dual-qualified as a European trade mark attorney and solicitor, heads the practice from the London office. In Cambridge, litigator and patent and trade mark attorney Stephen Hodsdon joined from Mewburn Ellis LLP, while Aaron Newell, a UK- and Australian-qualified solicitor, Canadian-qualified barrister and solicitor, and Australian-qualified trade mark attorney, joined the London office from Lewis Silkin LLP.

Practice head(s):

James Fish

Other key lawyers:

Tom Albertini; Ben Mooneapillay

Key clients



J A Kemp is one of the largest European patent and trade mark attorney firms, with offices in London, Oxford, Cambridge, Paris and Munich.

The firm prides itself on a pragmatic and strategic approach across all practice areas, supporting its clients’ changing needs at every stage of a project. Drafting; prosecution; opposition and litigation; non-contentious transactions and agreements; searching and assessment of validity / FTO; as well as global portfolio management:  all are handled in-house with the utmost professionalism and attention to detail. J A Kemp attorneys routinely leverage their expertise and experience to propose creative solutions to complex problems in all areas – helping their clients’ businesses to grow.

The firm works for a huge variety of direct domestic (UK and European) and international clients, ranging from startups, spinouts and growing businesses, through to some of the largest corporations and most prestigious academic institutions in the world. Attorney firms in the USA, Japan, China and the Republic of Korea also routinely instruct J A Kemp on behalf of their clients, happy to rely upon the firm’s unparalleled ability to secure intellectual property protection within Europe and elsewhere.

J A Kemp’s patents team is rightly famed for the breadth and depth of its technical expertise in every area of science and technology, boasting over 80 science and technology graduates, including over 45 PhDs. Drawing from three broad client service groups: biotechnology and life sciences, chemistry and pharmaceuticals, and engineering and IT, the firm is adept at assembling cross-disciplinary teams able to handle even complex inventions which sit across technological boundaries. Areas of particular expertise include antibodies and biologics, bioinformatics, chemistry, cleantech, diagnostics and personalised medicine, electronics and electrical technology, engineering, IT and software, manufacturing, materials and metallurgy, medical devices and technology, optics, pharmaceuticals, plant science and agriculture, polymers, regenerative medicine, semiconductors, vaccines and immunology.  J A Kemp has a well-deserved reputation for excellence in patent oppositions and appeals before the European Patent Office, as well as in its specialist team handling supplementary protection certificates (SPCs) across Europe.

The senior professionals leading J A Kemp’s dedicated trade marks team are drawn from major international law firms. The team has the expertise and resources to handle any trade mark matter, with particular expertise in the registration of unusual or otherwise difficult marks, including shape marks and marks that require evidence of acquired distinctiveness. J A Kemp’s trade mark attorneys are experienced in dispute resolution and opposition and related enforcement issues. The firm also offers a range of specialist services to protect clients’ brands online, including domain name monitoring, portfolio rationalisation, domain name disputes, anti-phishing and impersonation, website and social media takedowns, as well as handling all aspects of design protection in the UK, Europe and the rest of the world.

J A Kemp offers the full range of IP litigation for clients, including patent, design, copyright, trade mark, passing off and breach of confidence/trade secrets cases. In the UK the firm acts for clients in the Intellectual Property Enterprise Court (IPEC), the High Court and, on appeal, in the Court of Appeal and the Supreme Court. J A Kemp’s legal group also handles non-contentious work including registrable transactions, licensing and commercial agreements.

J A Kemp is a client-focused and commercially aware firm with the breadth and depth of expertise to handle any intellectual property matter.


Department Name Email Telephone
Chairman of the management committee John Leeming
Chief operating officer Philip Hall
Biotechnology and life sciences Patrick Campbell
Chemistry and pharmaceuticals Celia Keen
Engineering and IT Nigel Price
Trade marks and designs James Fish
Photo Name Position Profile
 Tom Albertini  photo Tom Albertini Partner, European Trade Mark Attorney, Litigator
 Lucy Barnes  photo Lucy Barnes Partner, Patent Attorney
 Patrick Campbell  photo Patrick Campbell Partner, Patent Attorney
Dr Andrew Clark  photo Dr Andrew Clark Partner, Patent Attorney
Dr Anthony Duckett  photo Dr Anthony Duckett Partner, Patent Attorney
 James Fish  photo James Fish Partner, European Trade Mark Attorney, Solicitor
 Kieron Grehan  photo Kieron Grehan Partner, Patent Attorney
 Stephen Hodsdon  photo Stephen Hodsdon Partner, Patent and Trade Mark Attorney, Litigator
 Toby Hopkin  photo Toby Hopkin Partner, Patent Attorney
Dr Henry Hunt-Grubbe  photo Dr Henry Hunt-Grubbe Partner, Patent Attorney
Dr Martin Jackson  photo Dr Martin Jackson Partner, Patent Attorney, Litigator
 Celia Keen  photo Celia Keen Partner, Patent Attorney
 John Leeming  photo John Leeming Partner, Patent Attorney, Litigator
Dr Graham Lewis  photo Dr Graham Lewis Partner, Patent Attorney
Dr Ian MacLeod  photo Dr Ian MacLeod Partner, Patent Attorney
 James Main  photo James Main Partner, Patent Attorney
 Chris Milton  photo Chris Milton Partner, Patent Attorney
 Aaron Newell  photo Aaron Newell Partner, Solicitor
Dr David Power  photo Dr David Power Partner, Patent Attorney
 Nigel Price  photo Nigel Price Partner, Patent Attorney
Dr Stuart Raynor  photo Dr Stuart Raynor Partner, Patent Attorney
 Joanne Roberts  photo Joanne Roberts Partner, Patent Attorney
 Mark Roberts  photo Mark Roberts Partner, Patent Attorney
 Sarah Roques  photo Sarah Roques Partner, Patent Attorney
 Jane Sexton  photo Jane Sexton Partner, Patent Attorney
 Samuel Smith  photo Samuel Smith Partner, Patent Attorney
 Ravi Srinivasan  photo Ravi Srinivasan Partner, Patent Attorney, Litigator
 Charlotte Stirling  photo Charlotte Stirling Partner, European Trade Mark Attorney
 Simon Wright  photo Simon Wright Partner, Patent Attorney
Number of partners : 44
Number of other fee-earners : 62
Total staff : 210