Patent No. EP3728460 (titled "Polypropylene Composition For Non-Pressurized Pipes") was filed by Sabic on Dec 18, 2018. The application was issued on Feb 7, 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 |
|---|---|---|
| BASELL POLIOLEFINE ITALIA | Nov 7, 2024 | LYONDELLBASELL |
| INEOS EUROPE | Nov 5, 2024 | MATHISEN & MACARA |
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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