Patent No. EP1680355 (titled "Catalytic Secondary Reforming Process And Reactor For Said Process") was filed by Casale on Oct 22, 2004. The application was issued on Aug 27, 2014.

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 |
|---|---|---|
| THYSSENKRUPP INDUSTRIAL SOLUTIONS | May 27, 2015 | LORENZ |
| HALDOR TOPSOE | May 26, 2015 | GRUNECKER PATENT |
| LINDE | May 26, 2015 | FISCHER |
| LAIR LIQUIDE | May 8, 2015 | DROPSCH |
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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