Patent No. EP3115041 (titled "Crush-Resistant Tablets Intended For Preventing Accidental Misuse And Unlawful Diversion") was filed by Ethypharm on Mar 1, 2007. The application was issued on Oct 25, 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 |
|---|---|---|
| G L PHARMA | Jul 25, 2024 | SONN PATENTANWALTE |
| HERTIN UND PARTNER RECHTS UND PATENTANWALTE PARTG MBB | Jul 25, 2024 | HERTIN UND PARTNER RECHTS UND PATENTANWALTE PARTG MBB |
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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