Patent No. EP3310400 (titled "Device For Sterile Treatment") was filed by Castus Sterile Systems on Jun 13, 2016. The application was issued on Mar 20, 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 |
|---|---|---|
| ATEC PHARMATECHNIK | Dec 16, 2019 | WEIDNER STERN JESCHKE |
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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