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Patrick Campbell

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 is being developed by two global biopharmaceutical companies and is in phase 3 clinical trials; 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 is recommended by The Legal 500. According to a client quoted in the 2017 edition of Chambers & Partners, Pat "is forward-thinking and has done a phenomenal job on EPO oppositions".

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




University of Cambridge, Masters Degree in Natural Sciences

Professional Qualifications

European Patent Attorney; UK Chartered Patent Attorney

Membership of Professional Bodies

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



Tel: +44 20 3077 8600

80 Turnmill St,

Contact Patrick

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