WP IP

News and commentary on IP issues

Defining Your Patient Group – A Cautionary Tale

Wednesday, 21 May 2025

Katherine Ellis

Patents

The recent EPO appeal decision T0589/22 discusses the requirement of plausibility in a diagnostic method case, but also provides a cautionary tale regarding defining a patient group in a claim. At the European Patent Office, for a therapeutic application (and by extension, a diagnostic application) to be considered sufficiently disclosed, the ...

63 Hits

Tags:

sufficiency plausability diagnostic methods evidence interpretation

63 Hits

Williams Powell are regulated by IPREG whose code of conduct can be found here.

These pages aim to provide a source of information for both non-professional enquirers e.g. inventors and their companies in the U.K. and professional consultants and advisers throughout the rest of the world. The pages are not intended to provide legal advice, which will only be provided on direct application to us in the formal context of a client/attorney relationship.

The information provided is correct to the best of our knowledge and belief, but is provided without obligation or guarantee. It will be updated from time to time as needed.