Oxon IP

Managing Partner

Leythem is a European and UK patent attorney and litigator specialising in the chemical, consumer products, energy, material, mechanical, medical and pharmaceutical sectors. Prior to founding Oxon IP, he was a Partner in major European and US Intellectual Property law firms, and before then in-house patent counsel for some of the world’s largest US and European multinationals.

He regularly represents clients in Opposition and Appeal 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.

A frequent author and lecturer on patent law, Leythem has had numerous articles published in legal journals and spoken at international programs and conferences in Europe, USA and Asia, as well as before Fortune 500 companies. He is also a selected speaker by the EPO and European Patent Institute (epi) for IP seminars, including acting as a representative in mock oral proceedings for such events.

Leythem is listed as a Patent Star by MIP, a WIPR Leader and appears on the IAM 1000 (The World’s Leading Patent Professionals) and the IAM 300 (The World’s Leading IP Strategists and Global Leaders) , specifically cited for his EPO Opposition experience.

Immediate Past President of European Patent Litigators Association (EPLIT) European Qualifying Examination (EQE) Committee (EPO Oppositions paper) Chartered Institute of Patent Attorneys (CIPA) Litigation, European and International Liaisons Committees and CIPA UPC Taskforce Intellectual Property Owners Association (IPO) European Practice Committee

MChem, Chemistry, Oxford University PgCert, IP Law, Queen Mary University of London DESU, Patent Litigation in Europe, Strasbourg University PgCert, IP Litigation & Advocacy, Nottingham Law School