Patent No. EP2247636 (titled "Plastically Deformable Polyurethane Rigid Foams With Improved Air Permeability And Use Thereof For Producing Auto Roof Linings") was filed by Basf on Feb 19, 2009. The application was issued on Oct 30, 2019.

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 |
|---|---|---|
| HUNTSMAN | Oct 4, 2017 | VAN DEN BROECK |
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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