"HGF’s expansion continues into 2019 with the arrival of Leythem Wall who joined the firm Monday 14th January 2019, in The Hague office.
Leythem has particular expertise and substantial experience in Oppositions and Appeals, regularly representing clients in Oral Proceedings before the European Patent Office (EPO) as lead counsel in a wide variety of technical areas. He has won numerous defensive and offensive oppositions, including multi-party proceedings, and successful coordination with disputes in multiple jurisdictions such as UK, Germany, US, China, Japan, Korea, and India.
Leythem also has a deep understanding of US post grant challenges (IPRs and PGRs), and how these can be most successfully combined with EPO oppositions. Leythem’s specialties also include European, PCT and UK patent drafting, prosecution, third-party observations, opinions on infringement and validity, freedom-to-operate analyses and due diligence. Prior to HGF, he was a Partner in the London office of a major US IP law firm, and before then in house IP counsel for some of the world’s largest multinationals. He therefore has a wealth of experience in devising global patenting strategies, including drafting and prosecuting patent applications for succeeding in both Europe and the US.
Leythem is a European and UK patent attorney specialising in the chemical, consumer products, energy, material and medical sectors. A Chartered Scientist (CSci), Chartered Chemist (CChem), and a European Chemist (EurChem), Leythem has a Masters degree (first class) in Chemistry from Oxford University. He also has postgraduate certificates in IP Law (Queen Mary, University of London), IP Litigation and Advocacy (Nottingham Law School), and a diploma in Patent Litigation in Europe (University of Strasbourg)."