Patent No. EP3862580 (titled "Fastening Device Comprising A Screw And A Thermal Insulating Element Attached To It Which Is Rotatable And Secured Against Sliding") was filed by Adolf Wrth on Nov 27, 2020. The application was issued on Mar 27, 2024.

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 |
|---|---|---|
| FISCHERWERKE | Dec 12, 2024 | WEICKMANN & WEICKMANN PARTMBB |
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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