Patent No. EP3289139 (titled "Tissue Paper Comprising Pulp Fibers Originating From Miscanthus And Method For Manufacturing The Same") was filed by Essity Hygiene And Health Aktiebolag on Apr 29, 2015. The application was issued on Aug 23, 2023.

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 |
|---|---|---|
| WEPA NEDERLAND | May 23, 2024 | WITHERS & ROGERS |
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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