Patent No. EP3523262 (titled "Methods For Producing Fiber Cement Products With Fiber Cement Waste") was filed by Etex Services on Oct 5, 2017. The application was issued on Jun 16, 2021.

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 |
|---|---|---|
| JAMES HARDIE TECHNOLOGY | Mar 16, 2022 | LENNEY |
| SWISSPEARL DANMARK HOLDING | Mar 9, 2022 | GUARDIAN CONSULTING IS |
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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