Powell Gilbert is top ranked for Intellectual Property: Patent Litigation in Chambers Global 2014. 

Penny Gilbert, Tim Powell, Simon Ayrton,  Zoë Butler and Alex Wilson are further recommended for Intellectual Property. The global ranking describes the partners as follows: 

Sources are hugely effusive about Penny Gilbert, describing her as "a legend in her area" and "very good on every metric you can think of." She has particular expertise in life sciences and biopharma work. 

Solicitor advocate Tim Powell is a "fantastic" patent litigator whose "strategic overview can cut to the heart of the matter." His broad patent practice includes pharmaceutical work.

Simon Ayrton is someone "you definitely want on your side" for all matters across the IP spectrum. He has been acting for Procter & Gamble in a number of infringement and passing-off matters.

Zoë Butler is a well-regarded patent litigator with broad experience in electronics and pharmaceutical work. She recently acted for Motorola Mobility in a claim by Microsoft for patent revocation.

German-speaking Alex Wilson regularly advises clients on German law. He recently acted for HTC on the UK and German aspects of its patent dispute with Apple.