Patent No. EP2684676 (titled "Biaxially Stretched Polypropylene Film, Metallized Film, And Film Capacitor") was filed by Toray Industries on Mar 6, 2012. The application was issued on Oct 28, 2015.

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 |
|---|---|---|
| TREOFAN GERMANY | Jul 28, 2016 | MAI BESIER |
| BOREALIS | Jul 26, 2016 | MAIWALD PATENT- UND RECHTSANWALTSGESELLSCHAFT MBH |
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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