Patent No. EP3186051 (titled "Process For Preparing A Polyolefin Composition") was filed by Basell Polyolefine on Dec 3, 2015. The application was issued on Aug 6, 2025.

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 |
|---|---|---|
| TOTALENERGIES ONE TECH BELGIUM | Jan 11, 2019 | RABOIN |
| CHEVRON PHILLIPS CHEMICAL LP | Jan 10, 2019 | ABEL & IMRAY |
| THE DOW CHEMICAL | Jan 4, 2019 | BOULT WADE TENNANT |
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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