Patent No. EP3534939 (titled "Vaccine Against Porcine Parvovirus And Porcine Reproductive And Respiratory Syndrome Virus And Methods Of Production Thereof") was filed by Boehringer Ingelheim on Nov 2, 2017. The application was issued on Feb 22, 2023.

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 |
|---|---|---|
| ZOETIS SERVICES | Nov 21, 2023 | PAGE |
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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