T 0466/25 (RESIN COMPOSITION/Kureha Corp.) of 02.07.2026
- European Case Law Identifier
- ECLI:EP:BA:2026:T046625.20260702
- Date of decision
- 2 July 2026
- Case number
- T 0466/25
- Online on
- 10 August 2026
- Petition for review of
- -
- Application number
- 19809995.4
- IPC class
- H01M 50/449C08L 27/16H01M 10/0525H01M 50/426H01M 4/62H01M 4/13H01M 50/403C08F 214/28C08F 214/22C09D 127/16
- 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
- RESIN COMPOSITION FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING SAME, RESIN COMPOSITION FOR ELECTRODE MIXTURE LAYER, ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
- Applicant name
- Kureha Corporation
- Opponent name
- ARKEMA FRANCE S.A.
- Board
- 3.3.05
- Headnote
- -
- Relevant legal provisions
- European Patent Convention Art 54European Patent Convention Art 123(2)Rules of procedure of the Boards of Appeal Art 13(2)
- Keywords
- Novelty - implicit disclosure (yes/no)
Novelty - public prior use
Novelty - implicit obligation to maintain secrecy (no)
Novelty - public prior use (yes)
Novelty - public prior use
Novelty - burden of proof
Amendments - allowable (no)
Amendments - intermediate generalisation
Amendments - undisclosed disclaimer
Amendment after summons - exceptional circumstances (no) - Catchword
- -
- Citing cases
- -
Order
For these reasons it is decided that:
1. The decision under appeal is set aside.
2. The patent is revoked.