Diana Sternfeld, Partner

Diana Sternfeld, Partner, Fieldfisher

I am a patent litigator with particular expertise in biotechnology patents.

As well as acting in all UK courts, I advise on international disputes and coordinate and assist with actions in other jurisdictions and patent offices. My patent career began with the land mark case of Biogen against Medeva and in 2015 I chaired a Reunion of the people involved to celebrate the 20th anniversary. Since that case I have acted in many significant cases, in particular, in the life sciences sector.

I am an active participant in the Bio Industry Association and have been a Member of the Board since 2011. I am an Associate Member of the Chartered Institute of Patent Attorneys and an accredited mediator.

Diana Sternfeld of Fieldfisher is a highly experienced patent litigator whose recent activity includes advising on the co-ordination of a multi-jurisdictional dispute concerning innovative vaccine products. A client praises her "unfailing calmness and politeness, matched with a shrewd rigour and a technically and legally adept mind," which makes for "an unusual and highly effective combination."

Diana Sternfeld has recently been ranked in Band 3 for IP patent litigation (London) and life sciences (UK-wide) in the Individual's Rankings in Chambers UK 2018.  She is described by a client as an "incredibly hard-working and knowledgeable" litigator who "has a supreme knack for putting together a great team and managing them to get the best out of everyone involved." She focuses on representing biotechnology companies in complex patent litigation.


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