Patent No. EP2174545 (titled "Bird Protection Device For A Transparent Material, Glass With A Bird Protection Device And Method For Producing Same") was filed by Glaswerke Arnold on May 19, 2004. The application was issued on Jul 12, 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.
| Company | Opposition Date | Representative |
|---|---|---|
| PILKINGTON GROUP | Apr 12, 2018 | MARSH |
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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