The Team - Patents

Our patents team is formed of qualified European and/or UK Patent attorneys with a first degree in a relevant technical subject.  We can handle patent applications in any technical area and have specialists with expertise in computer software and IT, the automotive field, biotechnology and medical devices.  We recognise that whilst the technical detail is important to the underlying strength of a patent, patents are business tools and it is important to balance a client's budget against best strategy for filing, prosecution and litigation.

Robert Jehan

Robert is a British and European Patent Attorney and a Patent Attorney Advocate and Litigator. He has a degree in electronic engineering and a Masters in Law specialising in litigation. He is the original author of the book "European Patent Decisions" (updated bi-annually) which sells in 25 countries throughout the world. 

He has worked both in private and industrial practice, having spent four years with the European Patent Department of General Motors Corporation. He also tutors candidates for the Qualifying Examination for European Patent Attorneys. 

His interests include skiing, tennis, swimming, marathon running, and visiting the cinema and the theatre.

Ian Tollett

Ian is a British and European Patent Attorney who has taken the relatively unusual step of qualifying as a Trade Mark Attorney by examination (and was awarded a prize for the highest mark while doing so). Before entering the profession he studied chemistry at The Queen's College, Oxford, where he also submitted a thesis on the history and philosophy of science.

Ian protects inventions in the chemical field, advises SMEs on IP business strategy, and offers IP support during due diligence and investment rounds. He has also managed IP litigation at the IPEC and High Court and has passed an IPReg regulated advocacy assessment. He is therefore able to advise at every stage of the IP lifecycle.

In the past he has been a keen canoeist and oarsman, but stays on dry land these days to pursue his interests of cycling, cocktails and culture.

Jonathan Exell

Jonathan is a British and European Patent Attorney. He studied Cybernetics with Computer Science at Reading University. While at university, he was sponsored by British Telecommunications plc and worked in their Natural Language and Cybernetics groups where he specialised in artificial intelligence programming methods, particularly neural networks and genetic programming.

Jonathan has particular interest in drafting and prosecuting patent applications in the computer sciences and business method areas and is able to offer advice based on practical experience as well as theoretical knowledge in fields including artificial intelligence, computer networking, computer systems and data communications. 

He has completed the D.U. Contentieux des brevets en Europe at the University of Strasbourg.  This qualifies Jonathan for the European Patent Litigation Certificate which gives UPC rights of representation.

Jonathan is also a Chartered IT Professional and is a member of the BCS, the Chartered Institute for IT.  He is active in promoting IP awareness in UK IT companies. In his spare time Jonathan runs and competes in triathlon competitions.

Katherine Ellis

Katherine is a British and European Patent Attorney.  She obtained a BSc in Molecular Biology with French from the University of Manchester.  This included a year carrying out research at the Institut de Génétique Moléculaire in Montpellier, France.  She then completed a Masters in Research in Biological Sciences at Manchester, which involved diverse research projects relating to the molecular biology of bone development, the classification of anaerobic fungi, and a study of trypanosomes using RNA interference.  Katherine then studied gene expression in the malaria parasite at the National Institute for Medical Research in Mill Hill, London, and was awarded a PhD from the University of London for her thesis entitled “Nuclear genes involved in the maintenance of the malarial plastid”.

During her time at Williams Powell, Katherine has worked on, amongst other things, the patenting of medical devices, nucleic acid arrays and their use in hybridisation assays, methods of oligonucleotide synthesis, and diagnostic tests and treatments for several important medical conditions and diseases.  

Out of the office, Katherine is a keen runner and regularly runs and volunteers at her local parkrun® event.  She also enjoys being on wheels: she cycles regularly and is currently attempting to master the art of inline skating.

David Grainger

Specialisms: Physics,  Medical devices

David is a British and European Patent Attorney. David read Physics at St. Peter’s College, Oxford. During the final year of his degree, David specialised jointly in condensed matter physics and theoretical physics, submitting a project which combined aspects of both disciplines.

At Williams Powell, David has worked on patent applications in a variety of technical areas focusing on the field of physics, including drafting and prosecuting patent applications for medical, mechanical, and optical devices. David has experience of handling international filing programmes and managing prosecution of global families of patent applications. He also has experience of filing oppositions and defending opposed patents at the EPO. David has acted as representative in oral proceedings at the EPO, both in contentious opposition proceedings and before the Board of Appeal. David’s practice also includes the preparation and filing of registered design applications at the UK-IPO and EUIPO. David is a member of AIPPI.

Stephen Powell

Stephen is a British and European Patent and Trade Mark Attorney.  He studied physics at Merton College, Oxford and also has an external law degree from London University.  For eight years he was an examiner in the U.K. Patent Office.  He has a good command of technical German.  He is a member of the Council of the Licensing Executives Society (Britain and Ireland).  

He is a member of FICPI and also a fellow of the Institute of Physics.  He has given I.P. seminars in the U.K., Scandinavia and Japan.  Away from the office he is a hockey umpire and a local school governor. 

Sarah Georgiou

Sarah is a British and European Patent Attorney. Prior to entering the patent profession she studied Chemistry at Jesus College, Oxford, where she spent a year carrying out research into the neurotoxicity of a peptide implicated in Alzheimer’s disease. 

Since joining Williams Powell, Sarah has been working mostly in the fields of chemical polymers and medical devices. Before making the move into private practice she spent five years working in industry for a company specialising in the development of scientific equipment, dental and medical devices, and other precision measurement equipment.   Outside of work Sarah enjoys cooking, walking, foreign travel, and going to the theatre.

Tara Fitz Gerald

Tara is a European Patent Attorney. She has a Masters in Biomedical Engineering from Imperial College London which involved conducting research into gene expression in atherosclerosis.

Tara works mostly on mechanical and medical device subject matters and has experience of drafting and prosecuting patent applications at the EPO and the UKIPO.  Before joining Williams Powell, Tara spent four years working in R&D as an engineer for a company specialising in consumer diagnostic products.  Outside of work, Tara enjoys travelling, hiking and photography.