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A Process For Producing Paper Or Board And A Product Thereof - EP3899136
The patent EP3899136 was granted to Kemira OYJ on Dec 21, 2022. The application was originally filed on May 22, 2019 under application number EP19727444A. The patent is currently recorded with a legal status of "Granted And Under Opposition".
EP3899136
- Application Number
- EP19727444A
- Filing Date
- May 22, 2019
- Status
- Granted And Under Opposition
- Nov 18, 2022
- Publication Date
- Dec 21, 2022
- External Links
- Slate, Register, Google Patents
Patent Summary
Patent Family
Patent Oppositions (2)
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.
Patent Citations (17) New
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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
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