Patent No. EP3829749 (titled "Drying Compressed Gas") was filed by Saudi Arabian OIL on Jul 19, 2019. The application was issued on May 15, 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 |
|---|---|---|
| LINDE | Feb 16, 2025 | GRUNDNER |
| LINDE | Feb 16, 2025 | IMHOF |
| LAIR LIQUIDE | Feb 10, 2025 | AIR LIQUIDE |
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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