Patent No. EP2607423 (titled "Vinyl Chloride Resin Composition") was filed by Adeka on Jul 29, 2011. The application was issued on Jul 20, 2016.

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 |
|---|---|---|
| BAERLOCHER | Apr 20, 2017 | HERZOG |
| IKA INNOVATIVE KUNSTSTOFFAUFBEREITUNG | Apr 20, 2017 | BUCHEL |
| PROFINE | Apr 20, 2017 | WUBKEN |
| REAGENS S.P.A. | Apr 20, 2017 | PALLADINO |
| ADD CHEM GERMANY | Apr 19, 2017 | - |
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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