Patent No. EP3663452 (titled "Nonwoven Fabric Having Enhanced Pull-Out Strength For Carpet Backing Fabric And Manufacturing Method Therefor") was filed by Kolon Industries on Sep 7, 2018. The application was issued on Jul 5, 2023.

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 |
|---|---|---|
| FREUDENBERG PERFORMANCE MATERIALS | Mar 28, 2024 | CPW |
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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