Patent No. EP2380980 (titled "Coenzyme-Linked Glucose Dehydrogenase And Polynucleotide Encoding The Same") was filed by Ikeda Food Research on Mar 27, 2006. The application was issued on Nov 5, 2014.

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 |
|---|---|---|
| ROCHE DIABETES CARE GMBH | Aug 5, 2015 | BOSL |
| TOYOBO | Aug 4, 2015 | MARKS & CLERK |
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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