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Liz Cohen


Liz Cohen

+44 (0)20 7400 8379

With over 16 years’ experience, Liz is  a sought after adviser for Pharmaceutical, Biotech and Medical Devices companies alike and has represented companies in the Life Sciences Sector in patent matters in the English Courts all the way up to the Supreme Court. Her extensive experience of coordinating cross-border litigation within Europe and beyond means that her strategic advice is particularly valued making her a trusted commercial adviser to many. Liz is a qualified solicitor advocate, a qualification she has used successfully in the past to obtain an interim injunction on short notice in the High Court.

Liz's background in Natural Sciences provides her with an excellent understanding of the technical and commercial issues facing her clients. Liz’s work is regularly published in industry journals and she is also a member of EPLAW, EPLIT, and CIPA and sits on the CIPA Life Sciences Committee. Liz is also one of the editors of our annual Biotech Review publication which explores key issues and developments in the biotech space.

Liz regularly advises clients on the implications of the proposed Unitary Patent and the Unified Patent Court and played an integral part in representing the alleged infringer in the much publicised Bristows UPC real-time mock action. She is a regular speaker at conferences on strategic considerations for European Patent Litigation and other issues that are of current interest to the Life Sciences industry.


  • MA Natural Sciences, University of Cambridge
  • Diploma in Intellectual Property Law and Practice, University of Bristol
  • Solicitor Advocate
  • Qualified 2001
  • Partner 2008
  • Joint Managing Partner 2017

Recommended for

  • Intellectual Property: Patent Litigation - Chambers and Partners (2019/2018/2017)
  • Life Sciences: IP/Patent Litigation - Chambers and Partners (2019)
  • Patent Litigation and The Top 250 Women in IP - Managing Intellectual Property, IP Stars (2019/2018/2017/2016)
  • Pharmaceuticals and Biotechnology - Legal 500 (2019/2018)
  • Patents, Litigation and Life Sciences, Patent Litigation - Who’s Who Legal (2019/2018/2017/2016/2015)
  • Patents - Expert Guides: Women in Business Law (2018/2017/2016/2015)
  • Patent Litigation - IAM Patent 1000 (2018/2017/2016/2015)
  • Intellectual property - Legal 500 (2017/2016)
  • Patents - Who’s Who Legal Thought Leader (2017)
  • 6th and 4th Edition of Best Lawyers in the United Kingdom for Intellectual Property Law (2017/2015)

"Liz Cohen is joint head of life sciences and is frequently called upon by medical device and pharmaceutical manufacturers to handle complex patent litigation, often across jurisdictions. An area of recent focus has been spearheading the firm's advisory services on the implications of the proposed Unitary Patent and the Unified Patent Court." - Chambers and Partners 2019

"Liz Cohen concentrates on life sciences patent disputes, often cases spanning multiple jurisdictions. She has litigated before courts at all levels, including the UK Supreme Court." - Chambers and Partners 2019

"The hard graft that Liz Cohen puts in pre-trial is reflected in a sublime track record; she has made a name for herself at courts across the land." - IAM Patent 1000 2018

Liz Cohen is "a brilliant lawyer and a leader in her field" according to respondents who appreciate her impeccable understanding of the technical and commercial issues faced by her clients. - Who's Who Legal 2018

Liz Cohen advises life sciences companies on multi-jurisdictional patent litigation. Sources say: "She is just fantastic with clients, very good at explaining things in a way they understand and very calm under pressure."  - Chambers and Partners 2018

Liz Cohen manages complex, cross-border patent litigation for medical device and pharmaceutical manufacturers. "She is just fantastic with clients and very calm under pressure," according to commentators. - Chambers and Partners 2018

Liz Cohen is a noted patent litigator and adviser on the implications of the forthcoming European Unified Patent Court. Sources say: ‘She is a great leader, has loads of patent litigation experience and is charming to boot’.” - Chambers and Partners 2017

"Liz Cohen is a patent litigator recognised for her focus on life sciences. Clients say: ‘Her technical ability is very strong and her calmness under pressure is very reassuring’." - Chambers and Partners 2017

"Liz Cohen recently represented biosimilar manufacturer Celltrion in a revocation action – only the second time that a patent case relating to a biosimilar has been brought to trial in the United Kingdom." - IAM Patent 1000 2017

"Liz is a tenacious lawyer.” - Managing Intellectual Property, IP Stars 2016

"Liz Cohen played a key role in the Smith and Nephew matter; with a background in natural sciences, she has lately been advising clients on the implications of the UPC.” - IAM Patent 1000 2016

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