Patent No. EP1441702 (titled "Method For Treating Primary Insomnia") was filed by Neurim Pharmaceuticals on Aug 12, 2002. The application was issued on May 10, 2017.

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 |
|---|---|---|
| ORIFARM GENERICS | Apr 8, 2020 | ZBM PATENTS APS |
| TEVA PHARMACEUTICALS | Feb 12, 2018 | ELKINGTON AND FIFE |
| ASPIRE PHARMA | Feb 9, 2018 | BROWN |
| GENERICS UK | Feb 9, 2018 | COOKE |
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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