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John Fisher


John Fisher, Patent Attorney


John graduated from King’s College London with a Masters Degree in Chemistry. He went on to complete a D.Phil in Organic Chemistry at Oxford University, specialising in natural product synthesis.

Career History

John entered the patent profession in 2006 and qualified as a UK and European patent attorney in 2010. He joined Gill Jennings & Every LLP as a partner in 2019.

John Fisher


John is an experienced UK & European Patent Attorney who works with a wide variety of technologies in the chemical sector. He has a busy prosecution portfolio that complements a substantial EPO opposition practice.

Main specialisms
John works primarily with clients in the industrial chemistry sector. He specialises in the following fields:

• polymer chemistry and adhesives
• consumer chemistry
• commodity chemicals and intermediates
• electroactive materials for lithium-ion batteries
• catalysis
• synthetic organic chemistry
• oil and gas recovery and refining
• inks and printing technologies
• materials
• medical consumables
• pharmaceuticals

John enjoys working with clients that range in size from start-ups to major multinationals. Notable clients include a major multinational consumer goods corporation, a leading global provider of printing technologies, and a UK-based innovator in the lithium-ion battery space. John also works closely with a number of leading attorney firms in the US and the Far East to secure UK and European patent protection for their clients.

Noted for:
John has a growing reputation for his expertise as an advocate in contentious inter-partes proceedings at the European Patent Office. He makes around 20 appearances before the EPO Opposition Divisions and Boards of Appeal each year and is adept at handling multiple proceedings in parallel for related cases. His opposition experience is also invaluable for his prosecution clients, enabling him to anticipate problems and to adopt strategies in pre-grant proceedings to future-proof those cases that are likely to be opposed.

John was the lead attorney for the patentee in the high-profile EPO Board of Appeal decision T1621/16. This case was widely reported in the IP media for the important precedent it set in relation to the assessment of added subject-matter, and was recognised as “Impact Case of the Year” at the MIP EMEA Awards 2021.

• Chartered Institute of Patent Attorneys (CIPA)
• European Patent Institute (EPI)
• International Association for the Protection of Intellectual Property (AIPPI)

Away from the office, John is an accomplished classical pianist and performs regularly in concerts and recitals. He keeps fit by running the occasional half-marathon.