Patent No. EP2417106 (titled "Process For Preparing Pyrrolidinium Salts") was filed by Novartis on Apr 7, 2010. The application was issued on Nov 30, 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 |
|---|---|---|
| AMSA ANONIMA MATERIE SINTETICHE E AFFINI | Aug 30, 2017 | CATTANEO |
| PAGE | Aug 30, 2017 | PAGE WHITE FARRER |
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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