Patent No. EP1558353 (titled "Anhydrous Conversion Of Methane And Other Light Alkanes Into Methanol And Other Derivatives, Using Radical Pathways And Chain Reactions With Minimal Waste Products") was filed by Richards on Nov 5, 2003. The application was issued on Jun 15, 2016.

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 |
|---|---|---|
| ARKEMA FRANCE | Mar 14, 2017 | - |
| GRILLO WERKE | Mar 14, 2017 | DOMPATENT VON KREISLER SELTING WERNER |
| HERZOG | Aug 18, 2016 | NOWACK |
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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