Isobel Barry

Senior Associate

Isobel’s practice focusses on the pharmaceutical field and encompasses small molecules, combination therapies, antisense therapeutics, and drug delivery systems. She advises innovator companies through all stages of the pharmaceutical product lifecycle, and much of her time is spent on contentious matters relating to patents protecting commercially important products, including patents for combinations and pharmaceutical formulations. She defends such patents in multiparty opposition and appeal procedures at the European Patent Office, and provides crucial support for pan-European enforcement and the defence of nullity actions.

She has considerable experience drafting and prosecuting patent applications at the European Patent Office, including those for new chemical entities, dosage regimens and manufacturing methods in the pharmaceutical field, as well as polymers and consumer product technology. She also coordinates the prosecution of global patent portfolios for her clients. She acts for some of the largest pharmaceutical companies in the world, including Novartis and Gilead Sciences, as well as smaller companies and university spin-outs. Isobel was named as a Rising Star in IP by Managing IP in 2018, 2019 and 2020. In 2020, she was named as one of World IP Review’s influential women in IP, featuring in a list of 20 global trailblazers.

Isobel holds a first class degree from the University of Cambridge, where she was awarded the GlaxoSmithKline Prize for the Best Organic Research Project in her final year. She pursued her interest in innovation in life sciences by working for Nature Publishing Group on its prestigious Nature Reviews journals before joining Carpmaels & Ransford LLP in 2009. During her training as a patent attorney, she was awarded the Bill Caro Prize for the highest aggregate mark in the Certificate in Intellectual Property Law at Queen Mary University of London.

Isobel is passionate about diversity and inclusion and has been active in IP Inclusive, an initiative to improve diversity and inclusion in the IP professions in the UK, since its early days. She sits on two subcommittees of IP Inclusive, running events for the support and networking groups IP Out and Women in IP. In her free time, Isobel makes the most of the cultural delights of London, runs two popular central London book clubs, and enjoys working on her Japanese and German language skills.

Isobel Barry’s “attention to detail is absolutely remarkable and this is reflected in the quality of her drafting”. 
Managing IP 2018


  • MA and MSci Natural Sciences (University of Cambridge)
  • Chartered Patent Attorney
  • European Patent Attorney
  • Intellectual Property Litigation Certificate

Key Cases

  • Exforge & Exforge HCT® – Novartis v eight opponents (combination product patent – EPO opposition proceedings)
  • Ionis Pharmaceuticals, Inc. – defending multiple oppositions to platform technology patents at the EPO
  • Atripla® –  Gilead Sciences LLC v five opponents (formulation patent – EPO opposition proceedings)
  • Cubicin® – Hospira UK Limited v Cubist Pharmaceuticals LLC (process patents – UK High Court)