Mr Daniel Byrne > AA Thornton > London, England > Lawyer Profile

AA Thornton
Octagon Point
5 Cheapside

Work Department



Daniel Byrne is a partner and barrister with extensive experience in intellectual property disputes and transactions. He has spent many years dealing with complex and technical patent matters and he has experience of multijurisdictional litigation and coordination, particularly across Europe where he spent two years practising in Paris.

He has acted for clients across the full range of intellectual property rights at all levels of tribunal and has been a Deputy District Judge in the County Court since 2015. He also sits in the Intellectual Property Enterprise Court to hear, primarily, trade mark and copyright claims. He sits on the consulting editorial board for LEXIS-NEXIS IP and contributes to journals and academic programmes.


Dan was called to the bar in 2005 and qualified in specialist intellectual property chambers in London. 

He has, since 2007, worked in law firms, including over 5 years in the IP litigation department at Bristows in London and 2 years in the IP litigation department at Gide Loyrette Nouel in Paris.

He was appointed as a Deputy District Judge in 2015 and sits from time to time in the County Courts of London, including in the Intellectual Property Enterprise Court (small claims).

Dan joined AA Thornton as a partner in September 2019.


Inner Temple




  • BSc Molecular Biology and Biochemistry (with industrial placement) – Durham University
  • MA in Biotechnological Law and Ethics – Sheffield University
  • CPE – City University
  • Bar Vocational Course – BPP Law School
  • Barrister in England & Wales


Reading, travelling and learning new things

Lawyer Rankings

London > TMT (technology, media and telecoms) > Intellectual property: patents (contentious and non-contentious)

‘Superb’ AA Thornton’s expertise encompasses patent disputes, patent prosecution and opposition work, as well as the management of global patent portfolios. Practice head Geoff Hussey routinely advises clients in relation to IP ownership structures and licensing, amongst other matters. Other recommended lawyers include Adrian BennettCraig Turner and Mike Jennings, who all possesses extensive litigation experience. Daniel Byrne has worked on telecoms, pharma and renewable energy patent litigation.

London > TMT (technology, media and telecoms) > Intellectual property: trade marks, copyright and design

Acting across a wide spectrum of sectors, AA Thornton advises clients on issues ranging from joint ventures to licensing deals, with a rise in digital assets, rights and AI-related matters. Co-lead Geoff Hussey assists on ownership structures and licensing mandates, with demonstrable experience in managing breach of contract disputes. Strengthening the firm’s offering is fellow co-leads Ian Gill and Sarah Darby, while Daniel Byrne is noted for his expertise in the realm of litigation. Lucy Pope joined from HGF Law in September 2022.