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Patent No. EP1908091 (titled "Method And Device For Multi-Cathode-Pvd-Coating And Substrate Having Pvd-Coating") was filed by Systec System UND Anlagentechnik on Jul 11, 2006. The application was issued on Feb 12, 2020.

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 |
|---|---|---|
| CEMECON | Nov 11, 2020 | KALKOFF & PARTNER PATENTANWALTE MBB |
| IHI HAUZER TECHNO COATING | Nov 11, 2020 | MANITZ FINSTERWALD PATENT UND RECHTSANWALTSPARTNERSCHAFT 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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