Rachel Mumby


Rachel is a patent litigator with over ten years’ experience in advising clients across a broad range of subject matters, from pharmaceuticals and medical devices to areas as diverse as mobile apps, glass fibres and beer dispensing technology. She has a particular interest in the chemical and life sciences sector due to her background in chemistry.

Rachel has experience of obtaining interim injunctions, advising on complex damages matters and supporting EPO oppositions, as well as providing strategic patent opinions.

In addition to her practice in English patent litigation, Rachel has extensive experience in the co-ordination of IP litigation relating to global pharmaceutical products. This involves managing litigation in a range of jurisdictions and she therefore regularly works closely with lawyers elsewhere in Europe and the USA.

Rachel spent seven months on secondment to the patent litigation team of a US biopharmaceutical company where she gained a first-hand appreciation of life as “the client” and a valuable insight into how best to provide good client service and useful, commercial advice.

Rachel co-ordinates a team of writers at Bristows for the EPLAW patent blog.


  • MChem Chemistry, University of Oxford
  • Diploma in Intellectual Property Law and Practice, University of Oxford
  • Qualified 2010
  • Solicitor Advocate
  • Partner 2020

What others say

“An accomplished litigator with a chemistry background.” IAM Patent 1000 2023
Rachel has a “reputation earned across a decade of sector-diverse patent litigation.” IAM Patent 1000 2022
“Owing to her chemistry background, chemical and life sciences cases are her speciality.” IAM Patent 1000 2022
"Rachel Mumby is a technically outstanding senior lawyer." Legal 500 2021
"Rachel Mumby is a talented solicitor- technically excellent and great with clients." Legal 500 2020

Recommended For


Patent Litigation

Intellectual Property: Patents (contentious and non-contentious)

Notable Practitioner

Notable Practitioner

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Life Sciences and Healthcare

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UK Rising Star

Life Sciences and Healthcare (next generation lawyer)

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