Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Rebecca Halford-Harrison
Partner
England & Wales
020 3319 3700
rebecca.halford-harrison@keystonelaw.co.uk
Rebecca is a well-established IP, technology and disputes lawyer. She is recognised as a leader in her field in intellectual property, particularly in relation to chemistry-based industries. These include food and beverage, life sciences and pharmaceuticals, household products, cosmetics, FMCG, plastics, and oil and gas, especially where there is crossover with technology.
Rebecca advises on a wide range of matters relating to patents, designs, trade marks, copyright and confidential information, as well as related regulatory issues.
She also advises on IP strategy in multi-professional teams, including with management consultants, patent attorneys and tax specialists, as required, to ensure effective extraction of value from IP.
Rebecca has been consistently ranked as a leading patent and IP litigator since 2008.
Expertise
Rebecca advises on patents and trade marks infringement, trade mark licences and assignments, copyright and database right infringement, and data protection enforcement across jurisdictions.
Experience
- Advised on and managed complex, multi-national intellectual property disputes dealing with a variety of rights, in particular where they incorporate patent infringement and validity claims, often in parallel with proceedings in the US and elsewhere
- Advised alongside patent attorneys on business-critical patent oppositions and appeals in the UK IPO and European Patent Office
- Advised a FTSE 100 company on design infringement, trade mark licence compliance, copyright infringement and issues relating to misuse of proprietary IP by third parties on marketplace websites.
- Advised a chemicals company on patent and design licence compliance, regulatory issues and enforcement issues.
- Advised a leading premium car manufacturer on a counterfeit enforcement programme.
- Advised a remote asset tracking company on patent, software copyright and design dispute.
- Advised a financial services company on trade mark strategy and data issues.
- Advised a shopping channel on patent, copyright, format, data protection, and IP enforcement issues.
- Advised a defence equipment manufacturer on regulatory compliance and associated patent, design, and trade mark issues.
- Advised a plastics manufacturer in relation to patent dispute, trade mark dispute, and IP strategy.
Rebecca advises clients in the food and beverage industry on patent disputes, licensing arrangements, copyright and trade mark issues, and regulation and compliance.
Experience
- Advised a food equipment manufacturer on multiple patent disputes and licensing arrangements.
- Advised an international beverage company on a plant variety rights dispute at the CPVO, copyright and trade mark issues as well as advertising compliance.
- Advised a beverage equipment manufacturer on patents, designs and trade marks, IP strategy and exploitation.
- Advised a restaurant technology app company on branding, intellectual property strategy, and related issues.
- Advised an ingredients manufacturer on patent licensing and IP strategy.
Rebecca advises clients in chemistry-based industries, including life sciences and pharmaceuticals, with advice on protection of inventions, research and development, and breach of IP licences.
Experience
• Advised a cosmetics company on regulatory compliance issues across the EU in parallel with US advice as well as on branding and other IP issues.
• Advised a leading biotechnology company on a patent dispute relating to stem cell technology.
• Advised a pharmaceutical company on multiple multi-jurisdictional patent infringement and validity disputes.
• Advised a wound products manufacturer on various disputes.
• Advised a life sciences technology provider on regulatory compliance and IP enforcement issues.
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recognition
Recognised in Chambers Global for Intellectual Property 2026
Recognised by Chambers UK for Intellectual Property 2019–2026
Recognised by The Legal 500 as a Leading Individual for Intellectual Property: Patents (Contentious and Non-Contentious) 2020–2026
Recognised by The Legal 500 for Intellectual Property: Trade Marks, Copyright and Design 2022–2026
Recognised by The Legal 500 for Life Sciences and Healthcare 2025-2026
Recognised by WTR1000 – Silver – Individuals: enforcement and litigation 2023–2025
Recognised by Managing Intellectual Property (MIP) IP Stars as a Trade mark star and Patent star 2020–2025
Recognised by Best Lawyers for Intellectual Property 2023–2025
Recognised in WIPR leaders for expertise in IP, including patent, trademark, and copyright issues 2024
Recognised in Lexology Index: Trademarks 2022–2023
Associate Member of the Chartered Institute of Patent Attorneys (CIPA)
Member of the International Trademark Association (INTA)
Member of The Royal Society of Chemistry
“Rebecca is pragmatic and gets to grips quickly with multi-jurisdictional disputes involving detailed chemistry. She is a pleasure to work with and widely trusted within the business.”
Chambers UK 2026
“Rebecca is a brilliant and completely trusted advisor.”
Chambers UK 2025
“Rebecca becomes a trusted part of the team.”
Chambers UK 2025
“She is outstandingly bright, commercial and understands computer programming and technology issues.”
Chambers UK 2025
“Rebecca has a strong patent background and offers extremely good and commercial advice on trade mark infringement matters.”
Chambers UK 2025
“At Keystone we work with Rebecca Halford-Harrison. Because of her high professional skills and very hard work we were able to solve the case.”
The Legal 500 2025
“Rebecca Halford-Harrison defended our interests much better than we could have done ourselves. During the time we have worked with her she has always given us the right advice and prepared our position in a way that we can win. We are very obliged to her for all the work she has done for us.”
The Legal 500 2025
“Rebecca Halford-Harrison is very brilliant; head screwed on, practical, highly intelligent advice with very clear understanding of the commercial drivers.”
The Legal 500 2025
“Rebecca Halford-Harrison has a very good network internationally and pulls together teams to deal with cross-border issues too.”
The Legal 500 2025
“Rebecca Halford-Harrison is an outstanding advisor in the field of IP. Her scientific background, combined with her commercial focus, means that she gives fine tailored advice.”
The Legal 500 2025
“Rebecca Halford-Harrison was supportive, hardworking and gave us precious advice in handling our case.”
The Legal 500 2025
“Rebecca offers invaluable advice across various aspects of intellectual property. Her expertise is instrumental from the initial stages of product development through to defending those rights in any arising disputes – she is an indispensable part of the journey.”
WTR 2025
“Rebecca Halford-Harrison is commercially minded, decisive and helpful.”
Chambers UK 2024
“Rebecca is amazing. She has been very supportive towards us while giving us the best possible advice.”
Chambers UK 2024
“For IP, I really rate and trust Rebecca Halford-Harrison. It’s a huge pleasure to work with her. She’ll give a quick steer if that’s all that’s needed, but is a go-to person when you have a serious problem that seems unsolvable.”
The Legal 500 2024
“Rebecca Halford-Harrison really knows her stuff and brings in the right high-quality experts.”
The Legal 500 2023
“Very smart and creative.”
Chambers UK 2022
“She is an excellent all-round IP lawyer who covers a wide range of fields and always gets to the heart of the matter.”
Chambers UK 2022
“She doesn’t leave any stone unturned and is formidable in terms of her approach.”
Chambers UK 2022
“Rebecca is good at geographical indication and has become a guru on that.”
Chambers UK 2022
“I work with Rebecca Halford-Harrison who is a highly gifted adviser. She takes a very commercial view, is able to deal with any IP matter and draws on her superb litigation skills to inform her advice in transactional matters. She is swift, provides clear urgent advice and is a superb resource.”
The Legal 500 2022
“Rebecca Halford-Harrison is utterly brilliant at what she does and goes above and beyond. For that, we are very grateful to have her represent us, looking after a very complicated matter that’s currently ongoing.”
The Legal 500 2022
“Rebecca is commercially minded and gives sensible, risk-adjusted advice.”
Chambers UK 2021
“Rebecca Halford-Harrison is a very good and able IP lawyer and very personable.”
The Legal 500 2021
“Rebecca Halford-Harrison is “a very good, creative finder of technical solutions".”
WTR 1000, 2020
“She gives highly commercial and strategic advice, thinks about a business’ wider requirements, is very responsive and takes care of clients excellently. Well networked and very good value, she is someone you want onside in a litigation – especially when a matter is complicated and multi-jurisdictional.”
WTR 1000, 2020
“Rebecca Halford-Harrison is an established IP disputes lawyer, marshalling winning arguments in cases concerning all core rights, although her metier is chemistry-related patent litigation. A client says: “She is the person you want on your side – charismatic, formidable and above all brilliant.”
Chambers UK 2020
“Rebecca Halford-Harrison is a strategically balanced but aggressive litigator.”
The Legal 500 2020
Rebecca qualified as a solicitor in 1998. Prior to joining Keystone Law in 2018, she worked at the following firms:
- Kemp Little
- K&L Gates
- Bird & Bird
