Powell Gilbert LLP

Simon Ayrton

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Practice Areas

Intellectual property litigation. Work covers advising on full range of intellectual property including patents, trademarks, copyright, designs and confidential information. Cases include Research Corporation's Patent (licence of right under the SPC for Carboplatin), IBM v Phoenix (trademark infringement and passing off), Rambus v Micron and Hyundai (patent infringement), Gillette v Corsair (passing off), Monsanto and Searle v Merck (patent infringement), Allergan v Pharmacia (patent infringement), Duracell v Round Imports (trade mark infringement), Sony Computer Entertainment v Ball (circumvention of copy protection measures), Aerotel v Telco (business method patents), Dr Reddy's v Eli Lilly (patent revocation), Philips and Others v Alba (patent exhaustion and competition), Apple v Nokia (patent infringement), HTC v Apple (patent revocation) and Unwired Planet v Huawei (patent infringement and FRAND).


Articled with Bristows 1991-93. Partner at Bristows 2000-07. Founding Partner at Powell Gilbert LLP 2007.

Professional Memberships



Writes articles for specialist periodicals. Regular speaker at intellectual property conferences and seminars.


Born 1966. Educated Watford Boys' Grammar School and Gonville and Caius College, Cambridge University (Natural Sciences).

Work Highlights

Unwired Planet v Huawei & Others (telecommunications/FRAND licensing); R (Vitra, Cassina & Knoll) v The Secretary of State for Business (judicial review – copyright protection); HTC v Apple (smartphones); Philips & Others v Alba (MPEG-2/FRAND licensing); Dr Reddy’s v Eli Lilly (olanzapine); Aerotel v Telco (telecommunications);

Sony Computer Entertainment v Ball (copy protection circumvention devices); Unilever v Colgate (soap packaging); Allergan v Pharmacia (latanoprost); Gillette v Corsair (trade mark infringement and passing off – body sprays) ; Rambus v Micron and Hynix (memory chip technology); Pharmacia v Merck (COX 2 inhibitors); Duracell v Round Imports (trade mark infringement – batteries) ; IBM v Phoenix (trade mark infringement and passing off – memory cards); Research Corporation’s Patent (SPCs - licence of right)

Industry Sector Expertise

Life Sciences/Pharmaceuticals and biotechnology


Telecoms and electronics

Medical devices


Energy and clean technology

Consumer goods

Media and entertainment


IP Star

Managing Intellectual Property