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Intellectual Property Disputes

Allen & Overy is well known for its precedent-setting intellectual property disputes advice. We represent clients worldwide, at the highest level, in the many different courts and tribunals key to IP matters.

A&O’s global IP team understands how to exploit the procedural and tactical possibilities that different forums offer, coordinating regional and global litigation and settlement strategies to achieve the right business outcomes for clients.

A firm technical understanding of underlying IP assets is crucial. Many of our team members have technical backgrounds and industry experience to advise with confidence in cases involving the most complex science and technology.

Antitrust issues and arbitration considerations are also increasingly important in IP disputes: we work with our top-tier antitrust and arbitration practices to deliver a seamless service.

Our multi-jurisdictional litigation experience covers all areas of IP, including:

  • Major patent litigation, including in the life sciences and technology sectors
  • Trade mark litigation at all levels
  • Trade secrets litigation, particularly in the finance and telecoms fields
  • Design and copyright litigation, often with an emphasis on digital rights

Our experience



on its European patent strategy for proprietary transgenic mouse technology (marketed as VelocImmune®) – the largest mammalian genetic engineering project ever completed.



in a multinational patent dispute concerning both standard essential patents and implementation patents relating to mobiles.



on a claim in relation to the McDonald’s “I’m Lovin’ It” jingle, song and trade mark where we advised three McDonald’s companies, as well as EMI, Pharrell Williams and Sony.



in litigation relating to its flagship Intel and Intel Inside trade marks (resulting in a number of changes in corporate names and trade names of third parties).

News and insights


News: 23 January 2023

Second trial win for A&O's U.S. IP Technology Disputes team on behalf of Wonderland

Allen & Overy’s U.S. IP Technology Disputes team led by Shamita Etienne-Cummings recently achieved a second complete jury-rendered victory for Wonderland Switzerland AG (Wonderland), the designer and…

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A group of colleagues in a modern conference room

Publications: 10 January 2023

The key to unlocking a successful trade secrets strategy

Having the right procedures in place can avert breaches of sensitive information—and be crucial in case of emergencies.

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Desk with papers sitting on it

Publications: 15 November 2022

Interim injunctions for product launches: has the horse bolted?

The High Court has refused to grant an interim injunction against a start-up’s product, despite a possible passing off claim. It held that an injunction might cause the product launch to lose momentum…

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Condensation gathered on appliance

Publications: 11 October 2022

High Court grants short-term interim injunction in unregistered design case: Leighton Vans v Harris

The High Court has granted a short-term interim injunction to prevent the alleged infringement of unregistered designs covering bumpers (fenders) for VW Transporter vans. In doing so it has provided…

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Recognition of our work

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