Patent No. EP3906220 (titled "New Formulation For A Low-Carbon Construction Binder, Method Of Production, And Construction Materials") was filed by Materrup on Dec 31, 2019. The application was issued on Oct 12, 2022.

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.
| Company | Opposition Date | Representative |
|---|---|---|
| CABINET LIONEL VIAL | Jun 7, 2023 | VIAL |
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.
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