Method For Dyeing Keratinous Material, Containing Dye And An Acidic Post-Treatment Agent
Patent No. EP3897565 (titled "Method For Dyeing Keratinous Material, Containing Dye And An Acidic Post-Treatment Agent") was filed by Henkel on Nov 7, 2019. The application was issued on Feb 12, 2025.
Patent Summary
Patent Family
Patent Oppositions
Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Dossier Documents
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents
EP3897565
- Application Number
- EP19801536A
- Filing Date
- Nov 7, 2019
- Status
- Granted And Under Opposition
- Jan 10, 2025
- Publication Date
- Feb 12, 2025
- External Links
- Slate, Register , Google Patents