Patent Litigation 2025

UK Trends and Developments

Trends and Developments Contributed by: Nicola Dagg, Jin Ooi, Ray Cheng and Nevyn Fournel Kirkland & Ellis Kirkland & Ellis has a patent litigation practice comprised of approximately 230 attorneys in London, Austin, Boston, Chicago, Houston, Los Angeles, New York, Palo Alto, Salt Lake City, San Francisco and Washington, DC. Over 75% of Kirkland’s patent litigation attorneys are engineers and scientists trained in various technical disciplines. Kirkland’s experienced IP litigation attorneys achieve extraordinary results in patent, copyright, trade mark, trade secret misappropriation and advertising matters. They represent clients across a range of industries, including life sciences, technology, consumer

products manufacturing, financial services, au- tomotive, and food and beverage. Other areas of practice are pharmaceutical and biologics patent litigation, co-ordinating global IP en- forcement/defence cases, SEPs and FRAND disputes, post-grant proceedings before the US Patent and Trademark Office’s Patent Trial and Appeal Board, and appeals of high-stakes cases in the US Court of Appeals for the Federal Circuit and the US Supreme Court, as well as the Court of Appeal of England and Wales and the UK Supreme Court.

Authors

Nicola Dagg is a partner and leader of Kirkland’s IP litigation practice in London. She draws upon her experience of more than 25 years at the forefront of IP litigation, particularly

Jin Ooi is a patent litigator at Kirkland & Ellis. He has worked on matters in the pharmaceutical, chemistry,

biotech and life sciences fields (second medical use, biologics/ biosimilars, small molecules, DNA sequencing, vaccines, transgenic animal platforms for antibody discovery), in the medical device space (cochlear implants, bone cements), and the FMCG and consumer products sector (reduced-risk products including tobacco heating products and e-cigarettes, shaving razors, dishwashing tablets, coffee pods and capsules). Jin’s cases are often multi- jurisdictional, requiring significant cross-border coordination across multiple forums. His dual qualifications in law and pharmacology give him a special insight into and understanding of his clients’ legal needs and commercial and regulatory imperatives.

regarding trade secrets and patents. Her practice includes pharmaceutical and biologics patent litigation; strategic life sciences patent and product life cycle advice; co-ordinating global IP enforcement/defence cases; hi-tech, digital and telecommunications litigation; and SEP and FRAND disputes. Nicola, who also has an MA in natural sciences, is renowned for her strategic and creative approach to solving difficult and commercially critical IP issues and regularly represents her clients in groundbreaking cases in the Court of Appeal and the UK Supreme Court.

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