Patent No. EP2833448 (titled "Composite Particles For Negative Electrodes Of Secondary Batteries, Use Of Same, Method For Producing Same, And Binder Composition") was filed by Zeon on Mar 21, 2013. The application was issued on Nov 15, 2017.

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.
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.
Date
Description
Get instant alerts for new documents