Patent No. EP3595863 (titled "Process For Producing Pipe By Biaxial Elongation") was filed by Sabic on Feb 21, 2018. The application was issued on Jul 3, 2024.

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 |
|---|---|---|
| GEORG FISCHER ROHRLEITUNGSSYSTEME | Dec 22, 2021 | PATENT UND RECHTSANWALTE BEHRMANN WAGNER PARTG 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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