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A Process For Producing Paper Or Board And A Product Thereof
Patent No. EP3899136 (titled "A Process For Producing Paper Or Board And A Product Thereof") was filed by Kemira OYJ on May 22, 2019. The application was issued on Dec 21, 2022.
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.
Dossier Documents
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Date
Description
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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, EP3899136B1, Google Patents