Patent No. EP3620144 (titled "Elasticised Absorbent Article With Channelled Core") was filed by Ontex on May 6, 2019. The application was issued on Jul 28, 2021.

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 AKTIEBOLAG | Apr 28, 2022 | HOFFMANN EITLE |
| SCHOPF | Apr 28, 2022 | 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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