Patent No. EP3313452 (titled "Method For Preparing An Injectable Cross-Linked Hydrogel, Hydrogel Obtained; And Use Of The Obtained Hydrogel") was filed by Kylane Laboratoires on Jun 15, 2016. The application was issued on Sep 4, 2019.

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 |
|---|---|---|
| LABORATOIRES VIVACY | Jun 4, 2020 | TRIPOZ |
| MERZ PHARMA | Jun 4, 2020 | FRITSCHE |
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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