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Patent No. EP3174703 (titled "Tubular Liner For The Rehabilitation Of Fluid-Conducting Pipeline Systems") was filed by Relineeurope on Jul 29, 2015. The application was issued on Aug 12, 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 |
|---|---|---|
| BUERGOFOL | Mar 3, 2021 | CANZLER & BERGMEIER PATENTANWALTE PARTNERSCHAFT MBB |
| SAERTEX MULTICOM | Mar 3, 2021 | MICHALSKI HUTTERMANN & PARTNER PATENTANWALTE 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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