Patent No. EP3140186 (titled "Diving Mask Having A Built-In Snorkel") was filed by Decathlon on May 5, 2014. The application was issued on Jul 17, 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 |
|---|---|---|
| SEACSUB | Apr 3, 2020 | ABM AGENZIA BREVETTI & MARCHI |
| ACTION SERVICE & DISTRIBUTIE ADRIAANSE IMPORT & EXPORT EDCO EINDHOVEN | Apr 2, 2020 | MOSER GOTZE & PARTNER PATENTANWALTE 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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