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Mark Elmslie

Mark Elmslie - Partner


Mark Elmslie is a Partner in the firm's Technology Group. He represents clients in both contentious and non-contentious Intellectual Property matters and heads up the IP litigation team.


Mark has extensive experience in intellectual property law and has conducted major litigation in both the UK and Australia for locally based and international clients across the whole spectrum of IP work. Whilst most of his work is on the contentious side, he has extensive experience in licensing, brand portfolio management, collaborative research agreements and other agreements concerning the vesting and exploitation of intellectual property rights. He also acts or has acted for a number of Patent and Trade Mark Attorneys in defending claims of professional negligence. Mark also handles general commercial disputes. In relation to his IP work Mark represents household names in retailing, cosmetics and fashion, as well as a range of clients in other areas of commerce, ranging from novelty toys marketed worldwide, to household goods, to medical instruments. He has acted in a number of cases before the European Court of First Instance, and regularly represents US clients in cases in the UK as well as cross border litigation in Europe and the US, including obtaining evidence for use in US proceedings. Mark represented the defendants in the appeal proceedings in the UK One in a Million litigation, the seminal UK case on claims relating to Domain Names. A regular speaker and author on intellectual property issues, Mark conducts seminars for clients and industry bodies as well as giving regular lectures to Trade Mark Attorney students. He is recognised by both the Legal 500 and Chambers directories as a leader in his field. The 2012 edition of Chambers reports clients as saying he is "no-nonsense in his approach [and] cuts to the chase’.


Mark has an LLB from the University of Adelaide and an LLM from the University of London. He worked in the field of intellectual property for some 12 years in London and Melbourne, Australia before becoming a partner at Hewitsons in 2002. He lives in Cambridge with his family, and his spare time is taken up by children, travel, reading, theatre, music and golf.

Additional information

A Leading Individual in Chambers & Partners UK Guide to the Legal Profession 2019. A Leading Lawyer in Legal 500 Client’s Guide to the Legal Profession 2020.

Recognised as a Lawyer of the Year in the 9th edition of The Best Lawyers in the United Kingdom 2021.

Hewitsons LLP

Hewitsons LLP

Hewitsons LLP

Number of Years Experience

31 years

Date of Qualification


Latest testimonials

"Mark Elmslie has a unique knowledge of the regulatory framework established by IPReg, the regulator for the IP profession. He is calm and measured in his advice."
Client quote to Legal 500

"I have nothing but positive things to say about their professionalism and responsiveness, they've been amazing in every respect."
Client quote to Chambers & Partners

"Extremely professional and well organised, offering a top-class service with expertise in all areas."
Client quote to Chambers & Partners