Patent No. EP2655447 (titled "Cold Water Soluble Polyvinyl Alcohol/Alkyl Acrylate Copolymers And Films Thereof") was filed by Sekisui Specialty Chemicals America on Dec 16, 2011. The application was issued on Jun 10, 2015.

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 |
|---|---|---|
| MONOSOL | Mar 10, 2016 | MAI BESIER |
| THE PROCTER & GAMBLE | Mar 10, 2016 | CLARKE |
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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