Patent No. EP2724843 (titled "Manufacture Of Thick Xps Foam Panels By Means Of Welding") was filed by Jackon Insulation on Aug 10, 2013. The application was issued on May 3, 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 |
|---|---|---|
| AUSTROTHERM | Feb 5, 2018 | MULLNER |
| SYNTHOS | Feb 5, 2018 | EISENFUHR SPEISER |
| ROBERT BURKLE | Feb 2, 2018 | REINHARDT |
| URSA INSULATION | Feb 2, 2018 | ZIMMERMANN & PARTNER PATENTANWALTE MBB |
| BASF | Jan 31, 2018 | ELLWANGER |
| SWISSPOR MANAGEMENT | Jan 30, 2018 | KOELLIKER |
| KARL BACHL KUNSTSTOFFVERARBEITUNG | Jan 18, 2018 | KUHNEN & WACKER PATENT UND RECHTSANWALTSBURO PARTG MBB |
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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