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Powell Gilbert LLP

Intellectual Property

7 ranked lawyersBand 1UKGlobal 2021 View ranking table
chambers review
department information
Ranked Lawyers
chambers review
department information
Ranked Lawyers

Chambers Review

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What the team is known for

One of the best patent litigation practices in the world. A comprehensive IP practice which advises on the registrability, protection and commercialisation of all core rights. Regularly instructed to handle the most cutting-edge of life sciences and hi-tech disputes. Recommended for trade mark, passing-off and copyright instructions.


One client says the team is "very efficient, thinks strategically and services its clients seamlessly."

"They are an excellent intellectual property team with a lot of in-depth knowledge," and offer "excellent, first-class advice," according to another.

Another client reports the team is "extremely knowledgeable, very responsive and everything they have told me is precise and to the point."

Work highlights

Represented Biogen in patent litigation over its biosimilar of AbbVie’s blockbuster drug adalimumab.

Notable practitioners

Alex Wilson is a seasoned litigator and registry practitioner handling disputes concerning all core rights. He is frequently instructed by leading innovators in the technology and life science sectors.
"He is a very knowledgeable and strategic lawyer. He knows the law but keeps in mind how to achieve the client's particular goal."

Ari Laakkonen is recommended for his expertise and experience with regard to telecommunications patent litigation, and is particularly noted for his command of the law concerning FRAND licensing. He has acted on behalf of clients before UK and European courts.

Penny Gilbert is one of the most accomplished patent litigators in Europe, specialising in pharmaceuticals and biotechnology. She has deep expertise across a magisterial sweep of technologies, not least vaccines, medical devices and antibody drugs.
"A great litigator - very smart, experienced and calm under pressure." "She is analytical and her strategic advice is spot-on." "A knowledgeable and sophisticated litigator."

Simon Ayrton undertakes a wide range of largely contentious IP work, focusing on trade marks, designs and copyright. He is also able to handle FRAND patent licensing disputes.

Tim Powell is hugely respected for his patent litigation and advocacy practice, which is focused on life sciences but takes in a wide range of technical disciplines. He has appeared before the highest levels of court, including the CJEU, the House of Lords and the Supreme Court.
"One of the most experienced people around, he is tenacious and a very good leader and strategist." "Tim has a strategic mind, gives practical advice and has a very deep knowledge of the law and the industry." 

Zoë Butler represents life sciences and technology companies in patent litigation and registry oppositions, often coordinating multi-jurisdictional disputes. Her experience includes patent infringement claims relating to medical devices as well as FRAND licensing disputes.
"She is thorough, thoughtful and organised." 

Department Information

This content is provided by Powell Gilbert LLP.


IP (General): Simon Ayrton
IP (Patents): Tim Powell
Life Sciences: Penny Gilbert
IT/Electronics: Zoë Butler, Ari Laakkonen
Regulatory: Tim Powell
ADR: Alex Wilson

THE FIRM Powell Gilbert is a specialist intellectual property law firm with one of the largest, most innovative and highly regarded IP litigation and advisory teams in the United Kingdom. With extensive litigation experience and lawyers who have strong scientific and technical backgrounds, the firm is uniquely positioned to address complex and commercially critical IP matters.

The firm’s renowned expertise in IP litigation and dispute resolution is the core of its practice. With a team of lawyers at the forefront of the IP profession in the UK, it has been involved in some of the most high-profile and ground-breaking pieces of litigation across a wide range of technologies and industries.

Whilst clearly focused on litigation and dispute resolution, the firm also offer counselling and advice on IP issues generally. This includes freedom to operate analysis, FRAND matters, product lifecycle management and anti-counterfeiting and parallel import strategies. 

English, Finnish, French, German, Cantonese and Mandarin.


Damerell, Peter

Gilbert, Penny

Hopewell, Bethan

Kusumakar, Siddharth

Laakkonen, Ari

Oliver, Tom

Powell, Tim

Whitfield, Tim


Access Advance LLC

Actavis UK Ltd

Biogen Idec



Coloplast A/S


Edwards Lifesciences

Elbit Systems


Fritz Hansen



Huawei Technologies

Illumina Inc


Napp Pharmaceuticals / Mundipharma

Nichia Corporation

Ocado Group plc

Philip Morris International


Procter & Gamble

Promptu Systems Corporation

Reckitt Benkiser

Research Corporation Technologies

Royalty Pharma


Sony Corporation

UCB Biopharma


Vivagro SARL





Consumer & luxury goods

Energy & clean technology


Food & beverages

Media & entertainment

Medical Devices


Telecoms & electronics

Intellectual Property

Powell Gilbert LLP


85 Fleet Street


Greater London



View Firm Profile

Ranked Lawyers

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.


Intellectual Property

Alex Wilson
Foreign expert for Germany
Simon Ayrton
Band 2

Intellectual Property: Patent Litigation

Alex Wilson
Band 3
Ari Laakkonen
Band 3
Penny Gilbert
Band 1

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