Patent No. EP3140328 (titled "Random Propylene-Ethylene Copolymers And Process For Their Preparation") was filed by Basell Poliolefine Italia on May 6, 2015. The application was issued on Nov 18, 2020.

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 |
|---|---|---|
| WR GRACE & CONN | Aug 18, 2021 | J A KEMP |
| BOREALIS | Aug 17, 2021 | KADOR & PARTNER |
| BOREALIS | Aug 17, 2021 | KADOR & PARTNER PART 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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