The Legal 500

Twitter Logo Youtube Circle Icon LinkedIn Icon


Work 020 7632 7200
Fax 020 7353 8895
Brighton, London, Manchester, Munich, Oxford

London: TMT (technology, media and telecoms)

PATMA: Patent attorneys
PATMA: Patent attorneys - ranked: tier 1


Dehns is one of the most established firms in the market and stands out especially through its prolific patent filing practice, both at the UKIPO and at the EPO. The group is also very experienced in opposition and appeal work and counts a high number of major British, Scandinavian (especially Norwegian), and US corporations among its longstanding clients. Senior partner Alexander Piésold and biotechnology practice head Hanna Dzieglewska, both in London; head of chemical Philip Towler in Oxford; and engineering practice head John Tothill in Brighton are key practitioners. Brighton's Philip Jeffrey, Deborah Owen and Oxford-based senior associate Mark Bell are also recommended. Oxford's Tim Wilson made partner. The firm also has offices in Bristol, Manchester and Sandwich as well as an international office in Munich.

Practice head(s):Alexander Piésold; Hanna Dzieglewska; Philip Towler; John Tothill

Other key lawyers:Philip Jeffrey, Deborah Owen

Key Clients


Bristol-Myers Squibb

Coca-Cola Company


Honda Motor Company


Oxford University Innovation


United Technologies Corporation (UTC)

Virgin Atlantic

Waters Corporation

Work highlights

  • Acted for Norwegian University of Science and Technology, assembling a multidisciplinary software and life sciences team to draft and file patent applications for a new type of medical ultrasound scanning device, including a Patent Cooperation Treaty application and four UK priority applications.
  • Developed a strategy for Amicoat to streamline prosecution of a patent family, ensuring post-appeal registration of a patent at the Japanese Patent Office and subsequently successful registration at the Indian Patent Office after the patent had been in danger of a final refusal of registration.

[back to top]

PATMA: Trade mark attorneys
PATMA: Trade mark attorneys - ranked: tier 1


Dehns demonstrates strength in a broad variety of sectors, including the food and drink, automobile, financial services, fashion and retail sectors. The group offers the full range of trade mark services, including the management and development of international trade mark portfolios, representation in opposition and appeal proceedings, and assistance with large-scale rebrandings. Roberto Calamita in London is the head of the practice. The other main trade mark hubs are in Brighton and Munich.

Practice head(s):Roberto Calamita

Other key lawyers:Elaine Deyes; Clare Mann; Joseph Letang

Key Clients

Apple Corps

Avon Cosmetics


Honda Motor Europe

Jane Shilton

Medtronic, Inc.

Otis Elevator Company


Pret a Manger

United Technologies Corporation (UTC)

Work highlights

  • Successfully obtaining UK trade mark protection for Janus Henderson Investors for the long-used strapline 'Knowledge Shared' after an official objection raised by the UKIPO by gathering and delivering evidence of the acquisition of the sufficient level of distinctiveness through consecutive use of the strapline.
  • Acted for Skillsoft in successfully opposing a competitor's application for registration of a figurative EU trade mark, obtaining a favourable decision from the EUIPO regarding two out of three concerned classes and securing refusal of the trade mark application in its entirety before the Board of Appeals.

[back to top]

Further information on Dehns

Please choose from this list to view details of what we say about Dehns in other jurisdictions.


Offices in London

Legal Developments in the UK

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to