Partner
Chartered Trade Mark Attorney
UK Design Attorney
CTMA
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Having started her career in 1986 with an established trade mark and patent attorney firm, Rosemary joined David Keltie in founding David Keltie Associates, now Keltie in 1988, becoming a partner in 1994. She is a Chartered Trade Mark Attorney and Member of the Chartered Institute of Trade Mark Attorneys.
Rosemary deals primarily with trade marks representing some of the UK’s best known brands. Her full and varied workload includes advising clients on strategic management of international portfolios, negotiations, advocacy work at trade mark hearings, UK and International trade mark clearance searching, due diligence, preparation of evidence, advising clients on the law of infringement and passing off and dealing with contentious issues such as the filing and defending of opposition, invalidation and revocation proceedings and handling appeals. She also advises clients on copyright matters.
Rosemary is also highly knowledgeable in trade mark law and practice outside the UK and advises clients from around the world acting for many well-known companies of international repute, but also enjoys advising start-ups on IP strategy and being involved in the growth of start-ups to established businesses. Her client base particularly includes the automotive, pharmaceutical, insurance, wine, financial trading and food sectors.
What people think about Rosemary
Managing Intellectual Property (MIP) has listed Rosemary as an IP Star in 2025.
The WTR 1000 2026 recomends Rosemary as “A fantastic partner when it comes to UK and European trademark matters including prosecution and enforcement. She is dedicated, experienced, and highly skilled. Rosemary provides comprehensive advice, responds quickly to queries, and helps to guide clients through complex situations with efficiency.”
In the WTR 1000 2024, Rosemary Cardas is highly recommended for her flawless handling of instructions. “She builds deep and trusting relationships and treats clients with the highest degree of professional courtesy.”
The World Trade Mark Review 1000 2023 stated “Rosemary is an excellent choice for trademark matters in the EU and UK. She is creative in finding solutions, persuasive in her arguments and consistent in the advice that she provides.”
The World Trade Mark Review 2020 ranks Keltie in Tier 1 (highly recommended) and states that Rosemary “trademark, copyright and design sage Rosemary Cardas is “highly skilled, great at resolving thorny disputes and working through complex IP issues”. She can help way beyond just filing an application and offers advice that works practically as well as theoretically. A true pioneer of the firm, she helped to found Keltie in 1988”.
11.05.2026
Trade Marks on the Move: Protecting London Transport Brands and SlogansFrom the roundel to MIND THE GAP, TfL relies on trade mark protection to safeguard some of London’s most iconic transport branding. Here, we look at what is protected and why it matters.
19.02.2026
Keltie’s Irish Team Shortlisted in Managing IP’s EMEA Awards 2026We are delighted that Keltie’s Irish team has been shortlisted in four categories in the Managing IP EMEA Awards 2026.
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