Patrick Campbell > J A Kemp > London, England > Lawyer Profile

J A Kemp
80 Turnmill Street

Work Department

Biotechnology and Life Sciences


Partner, European and UK Patent Attorney


Pat is is a European and UK Patent Attorney and Head of the Biotechnology and Life Sciences Group, one of the biggest Groups of its type in Europe.

Pat has a life sciences and pharmaceuticals practice for clients based in the United States, the UK, the rest of Europe and Japan. He has directed prosecution of patent families covering over 70 countries, but a high proportion of Pat’s work is prosecution, opposition and appeal work in the European Patent Office (EPO). He has handled about 70 opposition matters in the EPO over the course of his career to date. He has advised on multi-national litigation and counsels clients on freedom-to-operate issues.

Examples of subjects that Pat has patented for clients include the following: vaccines including whooping cough vaccines that are given to babies across Europe and the United States; antibodies including an antibody for treating osteoporosis, romosozumab, that was developed by two global biopharmaceutical companies; biologicals including pegylated G-CSF, a product used to treat patients suffering from low levels of white blood cells as a result of cancer chemotherapy; small molecule drugs including enzalutamide, the world’s top-selling drug for prostate cancer; techniques for converting non-pluripotent cells into pluripotent cells; methods of engineering bacteria to produce chemicals for making polymers; drought-resistant plants invented at a US university; and diagnostic tests for heart disease and cancer.

Pat was a scholar at Cambridge University and graduated from there in 1991 with a first class degree in Natural Sciences and specialisms in biochemistry and organic chemistry. He qualified as a European patent attorney in 1995 and as a UK chartered patent attorney in 1996. During his professional exams, he was awarded the prize for the top mark in the UK in the Patent Attorneys’ Practice Paper.

Pat joined J A Kemp in 1991 and became a partner in 2001.


Fellow of the Chartered Institute of Patent Attorneys (CIPA); Member of the Institute of Professional Representatives before the European Patent Office (EPI)


University of Cambridge, Masters Degree in Natural Sciences

Lawyer Rankings

London > TMT (technology, media and telecoms) > PATMA: Patent attorneys

With offices in London, Oxford, Cambridge, Paris and Munich, J A Kemp has a diverse client roster, including start-ups, spinouts, multinational companies and academic institutions, based in the UK and across Europe, and ‘provides an excellent service’ to clients situated in the US and Japan. The practice is noted for its standout expertise in the pharmaceuticals sector (Ravi Srinivasan heads up the team) and is well-versed in patent prosecution matters, often involving a cross-border element, as well as EPO opposition and appeal proceedings. Praised for his ‘wise counsel, professionalism and timeliness’, senior partner Nigel Price leads the engineering and IT group, while Amanda Simons spearheads the chemistry and pharmaceuticals practice, and Patrick Campbell is the biotechnology and life sciences lead. Mark Roberts heads up the medical devices team, John Leeming leads the software group, Samuel Smith heads up the electronics team and the plant science and agriculture practice is led by Andrew Bentham.