Patent No. EP1983984 (titled "Tuberous Sclerosis Treatment") was filed by Novartis on Jan 31, 2007. The application was issued on Mar 7, 2018.

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 |
|---|---|---|
| TEVA PHARMACEUTICAL INDUSTRIES | Dec 7, 2018 | SCHIENER |
| COOKE | Dec 7, 2018 | ELKINGTON AND FIFE |
| STADA ARZNEIMITTEL | Dec 7, 2018 | HAMM & WITTKOPP |
| TEVA PHARMACEUTICALS | Dec 7, 2018 | ELKINGTON AND FIFE |
| INTAS PHARMACEUTICALS | Dec 5, 2018 | PLOUGMANN VINGTOFT |
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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