J A Kemp

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

The firm is known for the breadth and depth of its technical knowledge relevant to patents. There are over 70 science and technology graduates at J A Kemp, including over 35 with PhDs. No area of science or technology is outside its scope.

The senior professionals who lead the firm’s dedicated trademark team include several attorneys with experience working at major international law firms. The team has the expertise and resources to handle any trademark matter.

Types of work undertaken

J A Kemp’s patent attorneys draft, file and prosecute patent applications in the United Kingdom, Europe and the rest of the world. The firm handles patent oppositions and appeals within Europe, especially before the European Patent Office. The firm’s attorneys advise clients on patent strategy, such as where and when to file applications. They also help clients to manage patent portfolios in multiple countries, regionally and worldwide.

J A Kemp’s trademark attorneys advise on trademark selection and strategy and file, defend and oppose trademark applications in the United Kingdom, Europe and the rest of the world. The firm obtains global protection for trademarks through international applications before the World Intellectual Property Organisation and by overseeing filing and prosecution programmes worldwide.

The firm also handles all aspects of design protection in the United Kingdom, Europe and the rest of the world.

J A Kemp conducts IP litigation and other contentious IP matters in the High Court of England and Wales, the Intellectual Property Enterprise Court, the UK Intellectual Property Office and the EU Intellectual Property Office, plus their respective appeal courts. The firm is also qualified to handle such matters in the Unified Patent Court. The firm conducts the full range of IP litigation – not just patent, trademark and design cases, but also copyright, passing off and breach of confidence and trade secret cases.

J A Kemp works for a huge variety of clients, from start-ups, spin-outs and small and medium-sized enterprises to some of the largest corporate clients and the most prestigious academic institutions in the world. J A Kemp also has a network of attorney firms throughout the world which instruct the firm on behalf of their clients.

Technology and sector specialisms

J A Kemp has the knowledge and resources to handle large volumes of patent cases in all technologies. J A Kemp never has to turn work away due to a lack of scientific knowledge or expertise of the relevant industry. The strength and depth of J A Kemp’s teams of attorneys mean that the firm can manage multiple cases simultaneously for a single client, either in a specific technology area or crossing technological boundaries.

J A Kemp has notable strength and expertise in biotechnology and life sciences, antibodies and biologics, bioinformatics, chemistry, cleantech, diagnostics and personalised medicine, electronics and electrical technology, engineering, information technology and software, manufacturing, materials and metallurgy, medical devices and technology, optics, pharmaceuticals, plant science and agriculture, polymers, regenerative medicine, semiconductors and vaccines and immunology. The teams that handle work in these specialised areas are drawn from the firm’s three patent client service groups: biotechnology and life sciences, chemistry and pharmaceuticals, and engineering and information technology. These groups are complemented by the firm’s trademarks and designs group, which provides services to the firm’s patent clients as well as many other clients in sectors that are not technology driven.

Breakdown of work

  • Biotechnology and life sciences – 31%
  • Chemistry and pharmaceuticals – 29%
  • Engineering and information technology – 31%
  • Trademarks and designs – 9%


  • Number of partners – 41
  • Number of other fee-earners – 44
  • Total staff – 183

Contact details

J A Kemp
14 South Square
Gray’s Inn
London WC1R 5JJ
United Kingdom

Professional contacts

Other offices

  • Cambridge
  • Munich
  • Oxford
  • Paris