Patent No. EP3473101 (titled "Isoxazoline Compositions And Their Use As Antiparasitics For Felines") was filed by Intervet on Aug 15, 2008. The application was issued on May 12, 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 |
|---|---|---|
| CEVA SANTE ANIMALE | Feb 11, 2022 | CABINET BECKER ET ASSOCIES |
| VIRBAC | Feb 11, 2022 | GEVERS & ORES |
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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