Patent No. EP2353859 (titled "Paper Product With Three Or More Plies And Method For Manufacturing It") was filed by Industrie Cartarie Tronchetti on Jan 21, 2011. The application was issued on Mar 16, 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 |
|---|---|---|
| SCA HYGIENE PRODUCTS | Dec 6, 2017 | HOFFMANN EITLE |
| ESSITY HYGIENE AND HEALTH AKTIEBOLAG | Dec 6, 2017 | HOFFMANN EITLE |
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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