John Leeming EPA, CPA
Technology and Sector Specialisms
IT and Software, Semiconductors, Optics
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)
Director of PAMIA Limited (the UK patent attorney profession’s mutual insurer), Member of PAMIA’s Claims and Ratings & Reinsurance board committees
Member of the Union of European Practitioners in Intellectual Property (UNION)
Member of the Society for Computers and the Law
University of Oxford, Masters Degree in Physics
John has over 25 years’ professional experience. He prosecutes patent applications in the optical, electronic and software fields, with particular expertise in semiconductor device manufacturing equipment and processes. John’s clients range from large multinationals to smaller startups, including firms that have successfully progressed beyond the early stages to develop extensive foreign filing programmes. Clients appreciate John’s pragmatic and cost-conscious approach to prosecution as well as his ability to effectively capture the essence of an invention in drafting applications.
John also handles litigation and enforcement matters, having recently conducted Patents County Court proceedings in relation to power tools and pipes and assisted in various Patents Court proceedings over the years. Many matters have been successfully resolved without recourse to litigation, sometimes making use of alternative dispute resolution methods such as mediation and IPO Opinions. John’s approach is to take clear and decisive action early in correspondence to prevent a matter escalating to litigation.
He also successfully handled, on behalf of the opponent, a reference to the European Patent Office Enlarged Board of Appeal (G0004/97) that established that it is legitimate to file an opposition in the name of a strawman. Other EPO opposition appeal proceedings John has handled include T0414/96 (Gain v. Hashimoto) relating to injection molding, T0811/97 (Bosch v. Rifala) relating to inverting power supplies, T0503/98 (Cool Sorption & Callidus v. John Zink) relating to hydrocarbon vapour capture, T0359/99 (K’Nex v. Lego) relating to construction toys and T0910/00 (ASML & Zeiss v Canon) relating to photolithography. Ex parte appeals include T0546/95 (Actel) and T0753/96 (Actel) relating to anti-fuses, J0016/02 (Vanderstraeten) relating to restitutio in integrum, T0408/04 (Synaptics) relating to touch pads, T1533/05 (ASML), T0892/05 (ASML) relating to photolithography, T0787/06 (Sony) relating to web publishing and T0495/07 (Ricoh) relating to image processing.
He is the primary contact at J A Kemp for UK and Community Registered Design matters.
John has extensive experience in recovering lapsed patents and applications, using restoration and restitutio procedures in the UK Intellectual Property Office (UK IPO), the EPO and elsewhere in Europe. The crucial factor in such proceedings is correct presentation of the evidence; viewed from the appropriate perspective an apparently hopeless case can become much more promising. He represented the proprietor in Ament’s Patent  RPC 647 which overturned the UK IPO’s practice that lack of funds could never be a ground for restoration of an inadvertently lapsed patent.
John joined J A Kemp in 1988 and became a partner in 1994.