Patent No. EP2397281 (titled "Unitary Razor Blade And Shaving Razor Cartridge Using Same") was filed by Dorco on Jan 28, 2010. The application was issued on Jul 2, 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 |
|---|---|---|
| BIC VIOLEX | Apr 1, 2015 | PETERREINS SCHLEY |
| EDGEWELL PERSONAL CARE BRANDS | Mar 31, 2015 | DOMPATENT VON KREISLER SELTING WERNER |
| THE GILLETTE | Mar 30, 2015 | HOYNG ROKH MONEGIER |
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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