Patent No. EP2482872 (titled "Method For Assembling A Drug Delivery Device, Assembly For A Drug Delivery Device And Piston Rod For A Drug Delivery Device") was filed by Sanofi Aventis Deutschland on Sep 29, 2010. The application was issued on Dec 11, 2019.

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 |
|---|---|---|
| CILAG | Feb 20, 2017 | BRUNNER |
| WMC MATTHES CONSULTING | Feb 7, 2017 | HOEFER & PARTNER PATENTANWALTE 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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