T 0563/24 (IL-4R antagonist antibody/SANOFI) of 12.01.2026

European Case Law Identifier: ECLI:EP:BA:2026:T056324.20260112
Date of decision: 12 January 2026
Case number: T 0563/24
Petition for review of: -
Application number: 15708991.3
IPC class: A61K 31/00 A61P 11/06 A61K 31/56 A61K 39/395 A61K 31/167
Language of proceedings: English
Distribution: No distribution (D)
Download: Decision in English
OJ versions: No OJ links found
Other decisions for this case: -
Abstracts for this decision: -
Application title: Methods for treating or preventing asthma by administering an IL-4R antagonist
Applicant name: Sanofi Biotechnology
Regeneron Pharmaceuticals, Inc.
Opponent name: Dr. H. Ulrich Dörries
D Young & Co LLP
Neuefeind, Regina
Board: 3.3.04
Headnote: -
Relevant legal provisions: European Patent Convention Art 113(2)
Keywords: Basis of decision - text or agreement to text withdrawn by patent proprietor
Basis of decision - patent revoked
Catchword: -
Cited cases: T 0073/84 T 0186/84 T 0646/08 T 2434/18
Citing cases: -

Order

For these reasons it is decided that:

1. The decision under appeal is set aside.

2. The patent is revoked.