Patent No. EP3656373 (titled "Syringe") was filed by Novartis on Jan 25, 2013. The application was issued on Feb 16, 2022.

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 |
|---|---|---|
| HAMM & WITTKOPP | Nov 16, 2022 | HAMM & WITTKOPP |
| HOFFMANN EITLE | Nov 15, 2022 | HOFFMANN EITLE |
| KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB | Nov 14, 2022 | KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB |
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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