Patent No. EP2520159 (titled "A Method Of Transporting Compost") was filed by Cedar Spring on Mar 26, 2012. The application was issued on Nov 25, 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 |
|---|---|---|
| COENEGRACHTS SUBSTRAAT | Jul 17, 2018 | PATENTWERK |
| CNC HOLDING | May 16, 2017 | ALGEMEEN OCTROOI EN MERKENBUREAU |
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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