Patent No. EP2326302 (titled "Hyaluronic Acid-Based Gels Including Anesthetic Agents") was filed by Allergan Industrie on Mar 2, 2009. The application was issued on Jul 27, 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 |
|---|---|---|
| LABORATOIRES VIVACY | Apr 27, 2017 | TRIPOZ |
| GALDERMA HOLDING | Apr 26, 2017 | AERA |
| MERZ PHARMA | Apr 21, 2017 | 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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