Gareth Fennell


Gareth entered the profession in 1998 after two years at Electronic Data Systems working as a software engineer.

Gareth’s workload spans a wide range of subject matter, with specialist areas including computer software, telecommunications, blockchain, medical devices, bio-informatics and other computational/chemical interface work. A particular interest is the patentability of borderline cases, including software innovations.

In addition to patent drafting and prosecution work, Gareth is experienced in handling EPO oppositions and appeals.  He also has litigation experience, having been an integral member of the litigation team for two High Court patent actions concerning packaging machinery and drill bit design.  He also manages and leads a team handling a large portfolio of telecommunications cases.

Gareth has had articles published on the patentability of borderline cases and has given various presentations and lectures on this and other subjects, including EPC 2000.  He also runs a training programme at Queen Mary, University of London, for candidates sitting the European qualifying examinations.

Gareth is also recognised as a leading patent professional in the industry, recently being quoted as having ‘tremendous knowledge and practical experience in the difficult area of software patents’ in Legal 500 2016.



European Patent Attorney (2003)
Chartered UK Patent Attorney (2003)
IP Litigator - Patent
MSc Computer Science, University of London (1996)
BA Hons Natural Sciences (Chemistry), University of Oxford (1994)


Chartered Institute of Patent Attorneys (CIPA)
The Institute of Professional Representatives before the European Patent Office (EPI)

Selected Publications

G. Fennel, The EPO and computer-implemented inventions: an appeal for more?, Kilburn & Strode (2018)

G. Fennel, Blockchain Buzz, Kilburn & Strode, (2017)

‘Five Approaches to Software Inventions’, Managing Intellectual Property (6 December 2013)

‘OK Computer? The Patentability of Software in Europe/UK’, Managing Intellectual Property (2010)

Software Patents in Europe, Association of Intellectual Property Firms (2009) 

‘A European perspective: a comparison of the different approaches of the UKIPO and EPO when assessing the patentability of electronic inventions’, Patent World (2006)

  • Financial Services
  • Medical Devices
  • Software
  • Telecommunications
  • Patents

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