Patent No. EP2649101 (titled "Process Of Preparing A Cross Linked Gel") was filed by Teoxane on Dec 6, 2011. The application was issued on Jun 2, 2021.

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 |
|---|---|---|
| MERZ PHARMA | Mar 2, 2022 | WALLINGER RICKER SCHLOTTER TOSTMANN |
| PETERREINS SCHLEY PATENT UND RECHTSANWALTE PARTG MBB | Feb 28, 2022 | PETERREINS SCHLEY |
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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