Share on LinkedInShare on LinkedIn

ARTICLE · 04 SEPTEMBER 2026

CD Munich, UPC 523/2025, Revocation Action, Issued On September 2, 2026

Bardehle Pagenberg
Bardehle Pagenberg
Contributor
Bardehle Pagenberg

Bardehle Pagenberg

IP practitioners with technical expertise As one of Europe’s leading IP law firms, BARDEHLE...

View firm profile
Explore more from Bardehle Pagenberg

The Munich Central Division of the Unified Patent Court addressed critical procedural and substantive questions in a revocation action concerning European Patent EP 4 226 039. The court examined the burden of proof required to establish lack of entitlement under Art. 138(1)(e) EPC, the court's discretion to assess dependent claims in stand-alone revocation proceedings, and the evidentiary value of Wayback Machine screenshots for proving public availability of online prior art.

GermanyIntellectual Property

1. Key takeaways

Lack of entitlement under Art. 138(1)(e) and Art. 60(1) EPC requires showing that the proprietor has no rights to the patent.

The requirement in Art. 138(1)(e) EPC that a European patent may be revoked if the proprietor is not entitled under Art. 60(1) EPC should be interpreted as meaning that the proprietor does not have any rights to the patent. The burden of presentation and proof in this regard lies with claimant. It is therefore not sufficient for this ground of revocation to be successful that claimant demonstrates that it has rights to parts of the subject-matter disclosed in a patent, e.g. as a co-inventor or the co-inventor’s successor in title.

In a stand-alone revocation action, the Court has discretion to assess the validity of dependend claims, even if the independent claim is deemed valid.

We operate a free-to-view policy, asking only that you register in order to read all of our content. Please login or register to view the rest of this article.

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

See more popular content from