Dr Brian Nicholson KC > Chambers of Iain Purvis KC > London, England > Lawyer Profile

Chambers of Iain Purvis KC
11 South Square


Senior barrister specialising in all areas of intellectual property and related fields including: patents; design right; copyright; information technology; breach of confidence and privacy; trade marks and passing off. Particular specialisation in complex electronic and computing technology cases. 

Previous cases include:Dr Reddy’s v Warner Lambert (damages inquiry), Facebook v Voxer (telecommunications messaging patent), Claydon v Mzuri (patents relating to agricultural machinery), IPCom v Vodafone (Appeal), IPCom v Vodafone (Patents Court), TQ Delta v ZYXEL (Digital Subscriber Line patents), Garmin v Philips (GPS fitness tracker patent), Clearswift v Glasswall (patents, software), Apple v Qualcomm (patents, telecoms, FRAND), American Science v Rapiscan (x-ray patents); Warner Lambert v Dr Reddy’s (pharmaceutical patent); Magmatic v PMSL (design right); Unwired Planet v Samsung & Google (telecoms patents); Philips v Nintendo (computer game patents); Nokia v HTC (telecoms patents); IPcom v HTC (telecoms patent infringement and validity); BSkyB v Microsoft (trade mark infringement and passing off); Virgin Atlantic Airways v Zodiac [2013] UKSC 46 (aeroplane seat patents); 3i infotech v Royal Bank of Scotland (computer contract); Covatec v Smith & Nephew (medical device patent); IPCom v Nokia (FRAND inquiry); Apple v Samsung (mobile telephone technology); Sandisk v Kingston (portable memory technology); IPcom v Nokia (mobile telephone patents); Global Coal v London Commodity Brokers (traders licensing agreements); Cranway v Playtech (internet gaming patent); Navitaire v Easyjet (copyright in software, user-interfaces and database), Intel v Via (CPU Patents); Zipher v Markem (printing apparatus patents); Microsoft v Digital Now (software authentication devices); Nokia v Interdigital (mobile telephone patents); Thomson v Pace (MPEG Video patents); Samsung v Ericsson/Sony Ericsson (mobile telephone patents); Siemens v Thorn (PCB coating patent appeal); Trafalgar v Hamdi (Supreme Court of Gibraltar, confidential information).


Qualified 2000, Lincoln’s Inn.
Standing Counsel for the Comptroller-General of Patents, Designs and Trade Marks (2014-2019).
Silk, 2019.


Intellectual Property Bar Association; Chancery Bar Association; Chartered Engineer; European Engineer; FRSA; FRI; MIET; MBCS; MIEEE; MACM.


The Blue School; University of Bath (1995 B Eng (Hons) 1st; 1998 PhD, ‘Artificial Intelligence for the Robust Optimisation of On-Line Control System Stability’); City University (1999 Diploma in law); ICSL; Lincoln’s Inn Scholarships: Cassel, Sunley, CPE and Hardwicke. .

Lawyer Rankings

London Bar > IT and telecoms (infrastructure and contracts)

(Leading Silks)Ranked: Tier 3

Brian Nicholson KC11 South Square

The barristers at 11 South Square showcase combined expertise in intellectual property and telecoms disputes, often acting for major clients in cases with a crossover element. Appearing before the Court of Appeal, Michael Silverleaf KC acted for the Ministry of Defence in IPCom v Vodafone, intervening with the agreement of the parties, regarding the crown use provisions of Patents Act 1977; the case involves a technology that can be used to prioritize emergency services users over the mobile phone network. In Philips v Xiaomi, Mark Vanhegan KC represents the claimant in connection with patents declared to be essential to 3G and 4G standards. Vanhegan also went up against Brian Nicholson, who represented the defendant, in Facebook v Voxer, a dispute focused on a patent revocation action.

London Bar > Intellectual property

(Leading Silks)Ranked: Tier 3

Brian Nicholson KC11 South SquareTop IP silk across both patents and trade marks. Fantastic advocate – thoughtful and committed to the cause.