Marks & Clerk

Intelletcual Property

Dafydd advises clients on the enforcement and commercialisation of intellectual property. He has particular experience of strategic advice on the litigation and licensing of TMT, electronics and software patents, regularly advising clients on such cases in the High Court and Court of Appeal. He has a broad range of experience, which, in the technology sector, includes advising on patents in fields such as software, broadcasting, graphical user interfaces, mobile telephony, network communications and internet applications. This includes recent and ongoing advice on FRAND and SEP licensing issues and related litigation. Dafydd’s other patent litigation experience relates to oil and gas machinery such as tong-positioning devices, wellbore technology and shale shakers and more general mechanical patents ranging from household equipment to industrial machinery.

Dafydd also has significant experience in advising on the interaction of co-pending UK litigation and opposition proceedings at the European Patent Office, having worked closely with Marks & Clerk’s patent attorneys on a large number of oppositions relating to parallel UK litigation proceedings.

In addition to his patent practice, Dafydd has considerable experience of advising on the litigation of designs, including advice on UK and EU registered and unregistered designs across a broad range of products.. His experience in this field includes such diverse areas as designs for fashion products, furniture, fitness accessories, packaging and camping equipment.

Dafydd often also advises on disputes relating to trade marks, copyright and confidential information.

As well as his litigation and dispute resolution experience, Dafydd has broad experience of advising clients on commercial and transactional matters involving licensing and commercialisation of intellectual property and has significant experience of IP due diligence. He has worked on R&D collaboration agreements, licensing and sponsorship arrangements, employee IP issues and the IP aspects of corporate transactions.

Dafydd speaks English, French and Welsh fluently. He is happy to accept instructions and give advice in any of these languages. In particular Dafydd has recent significant experience of advising French-speaking clients on English litigation through the medium of French.

Example Cases

Rovi v Virgin Media and TiVo

Gemstar v Virgin Media

Sealed Air v Sharp Interpack

Mast-Jägermeister v Global Brands

Off the Wall v Sambell Engineering

Mobile VPT v Link Interchange Networks and others

Weatherford International v BJ Services

Dafydd trained as a solicitor in a major City firm, where he practiced for nearly five years after qualifying in 2005. He joined Marks & Clerk Law in February 2010 and became a Partner in 2016.

Français (French)EnglishCymraeg (Welsh)

Post Graduate Diploma in Intellectual Property Law and Practice, University of Bristol (2006)

Qualified as a Solicitor in England & Wales (2005)

Legal Practice Course, BBP Law School, London (2003)

LLB Law with French Law (following a year's study of degree level Physics), University College London (2002)

Diploma in French Law, Faculté de Droit et de Science Politique, Aix en Provence (2001)