Liz Cohen


Liz is a highly experienced and well regarded IP specialist with a focus on counselling clients in the life sciences sector on national and international patent strategy and litigation.

With over 20 years’ experience, Liz is a sought after adviser for pharmaceutical, biotech and medical devices companies alike and has represented companies in the life sciences industry 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 her many clients.

Liz is a qualified solicitor advocate, a qualification she has used successfully 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 those operating in the life sciences industry. 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.

Liz’s work is regularly published in industry journals. She is also a member of EPLAW, EPLIT, and CIPA, and sits on the CIPA Life Sciences Committee.

She is frequently asked to comment and lecture on legal issues affecting the life sciences sector and she is a regular speaker at international conferences on strategic considerations for European and international patent litigation. Liz is a tutor on the Oxford University Diploma in Intellectual Property Law and Practice course, teaching patent litigation.


  • MA Natural Sciences, University of Cambridge
  • Diploma in Intellectual Property Law and Practice, University of Bristol
  • Solicitor Advocate 2005
  • Qualified 2001
  • Partner 2008
  • Joint Managing Partner 2017 – present

What others say

"Liz is always up to date and ready to take further steps in supporting the client." Chambers and Partners 2021
"Her [Liz Cohen] skills and attitude contribute to establishing an easy and effective professional relationship, which results in positive outcomes." Chambers and Partners 2021
"Liz Cohen has extensive experience with regard to small molecule and biosimilar patents." Chambers and Partners 2021
"She [Liz Cohen] is an amazing expert in litigation." Chambers and Partners 2021
Liz Cohen is "highly sought after to marshal international litigation campaigns." Chambers and Partners 2021
Liz Cohen has a "masterful handling of patent disputes". Chambers and Partners 2021
"Liz Cohen has an impressive reputation in the life sciences sector." Chambers and Partners 2021
Liz Cohen i s "a very good lawyer with excellent strategic skills.“ Juve UK 2021
“If we have a conflict, Liz is our go-to.” Juve UK 2021
"Liz Cohen is a key name in the biosimilar space." Legal 500 2021
Liz is a "very effective team leader who knows when to delegate." Legal 500 2021
"Liz Cohen and Robert Burrows are very impressive, communicating clearly and being very astute when it comes to protecting their client’s interests." Legal 500 2021
Liz Cohen is "a really good strategic thinker with an ability to develop litigation strategies that achieve her client’s commercial objectives." Legal 500 2021
"Liz Cohen is incredibly calm under pressure" Legal 500 2021
"Provides astute guidance on a regular basis" IAM Patent 1000 2020
Liz is "a life sciences doyenne whose qualification as a solicitor-advocate comes in extremely handy at the High Court" IAM Patent 1000 2020
"exceptionally talented" Who's Who Legal Patents 2020
Liz Cohen's "extensive experience and technical background allows her to be supercompetent and reliable" Who's Who Legal Patents 2020
Liz Cohen "is extremely thorough and a very robust litigator." Chambers and Partners 2020
"She [Liz Cohen] is very charming and absolutely focused on strategy and market dynamics." Chambers and Partners 2020
"Liz Cohen has an impressive reputation in the life sciences sector for her masterful handling of patent litigation." Chambers and Partners 2020
"outstanding" Liz Cohen Legal 500 2020
"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

Recommended For

Life Sciences: IP/Patent Litigation
Chambers and Partners 2021

Intellectual Property: Patent Litigation
Chambers and Partners 2021

Life Sciences and Healthcare (leading individual)
Legal 500 2021

Intellectual Property: Patents (contentious and non-contentious)
Legal 500 2021

Top Solicitor in Litigation
Juve UK 2021

Recommended Individual
Juve UK 2021

Intellectual Property Law
Best Lawyers™ UK 2021

Intellectual Property
Legal 500 2020

Who's Who Legal Global Elite Thought Leader 2020

Life Sciences: Patent Litigation
Who’s Who Legal 2020

Patent Litigation and Life Sciences
Leaders League UK 2020

Patent Litigation
IAM Patent 1000 2020

Patent Litigation, Patent Strategy & Counseling
MIP, IP Stars 2020

Expert Guides: Women in Business Law 2019

The Top 250 Women in IP
MIP, IP Stars 2018

6th and 4th Edition of Best Lawyers™ in the United Kingdom for Intellectual Property Law

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