Patent No. EP1856367 (titled "Rotation Device For A Boom Of A Mining Or Constructions Work Rig, Rig And Boom") was filed by Atlas Copco on Feb 17, 2006. The application was issued on Nov 8, 2017.

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 |
|---|---|---|
| ANDERSEN MEK VERKSTED | Aug 8, 2018 | HAMSO PATENTBYRA |
| SANDVIK MINING AND CONSTRUCTION | Aug 8, 2018 | PAPULA |
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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