Patent No. EP3993691 (titled "Substrate, Absorbent Article And Method For Wetness Monitoring") was filed by Ontex on Jun 26, 2020. The application was issued on Jan 24, 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 |
|---|---|---|
| ESSITY HYGIENE AND HEALTH | Oct 24, 2024 | HOFFMANN EITLE |
| SCHOPF | Oct 24, 2024 | SAMSON & 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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