LAWYER PROFILE

Mark Heaney

Global 2026

A&O Shearman

Ranked in 1 practice area

Intellectual Property: Patent Litigation

12 years ranked

About

Provided by A&O Shearman

Practice Areas

Mark is known as one of the "go to" patent litigators in the hi-tech sector and is recognised by all major directories as a leading practitioner. He regularly advises on large scale international matters for well-known names in the telecoms, IT and software sectors. Mark is unique in the London IP market with a background and previous career in electronic engineering and a degree in computer science before moving to law, allowing him to talk to clients in their own language.

Mark has been involved in many of the leading cases in the electronics and telecommunications sectors in the UK and much of his work involves cross-border disputes, with litigation often taking place in the UK in parallel with actions in Japan, Germany, the US or the Netherlands.

Chambers Review

Provided by Chambers

Chambers Global Guide

Intellectual Property: Patent Litigation - UK

Band 3

Individual Editorial

Mark Heaney is a notable litigator renowned for his experience handling FRAND and standard-essential patent cases as well as advising on potential infringement actions. He has strong and extensive relationships with clients in the technology sector.

Learn more about this team View ranking table

Strengths

Provided by Chambers

An outstanding litigator.
Intellectual Property: Patent LitigationChambers Global Guide
Mark Heaney is terrific - he is deeply versed in the law, has a good strategic mind on how to prosecute our case and he is enjoyable to work with.
Intellectual Property: Patent LitigationChambers Global Guide