11 South Square is a leading barristers chambers specialising in all areas of intellectual property law. In 2023, it celebrated its centenary. The set is made up of 9 King’s Counsel (1 Honorary), 13 juniors and one former Court of Appeal Judge. It also includes a leading Professor in IP law. Many members have extensive experience in science and industry enabling them to offer top quality advocacy and advice to their clients.

Chambers is made up of a team of barristers that contains some of the most highly rated silks, strength at senior junior level with many leading on cases and junior members that are recognised as current and future stars. This reputation has meant that 11 South Square is consistently recognised in the legal directories for being ‘best intellectual property set around‘ with ‘considerable strength at all levels, from the newest junior to experienced silks’ (Legal 500 2023) and ‘well-known for its work on leading IP cases’ (Legal 500 2024). 11 South Square is recognised as ‘highly regarded set which is regularly instructed in technically heavy patent cases involving medical devices, pharmaceuticals and telecoms technology’ and a ‘noteworthy trade mark practice’ (Chambers and Partners 2023 and 2024).

Our members frequently act in leading cases in the areas of intellectual property, information technology and media and entertainment and have appeared in courts and tribunals of all levels in the UK and other jurisdictions throughout the world. With increasing amounts of litigants seeking to resolve disputes through alternative means, members of chambers are regularly involved in arbitrations and mediations, as advocates, mediators and members of expert panels both in chambers’ core areas as well as other areas of law. A selection of both silks and juniors in chambers are accredited mediators.

Our full history is set out on the History page.