Patent No. EP2203053 (titled "Modified Starch Material Of Biocompatible Hemostasis") was filed by JI on Jan 13, 2009. The application was issued on Sep 20, 2017.

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 |
|---|---|---|
| MAGLE CHEMOSWED HOLDING | Jun 20, 2018 | STROM & GULLIKSSON |
| BIOCER ENTWICKLUNGS | Jun 18, 2018 | ISARPATENT |
| HEMOSTAT MEDICAL | Jun 15, 2018 | WITTMANN |
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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