Patent No. EP3308995 (titled "Pantograph Wearing Strip And Pantograph Equipped With Such A Wearing Strip") was filed by Sncf Mobilits on Oct 6, 2017. The application was issued on May 12, 2021.

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 |
|---|---|---|
| SCHUNK CARBON TECHNOLOGY | Feb 10, 2022 | ADVOTEC |
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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