Patent No. EP3272505 (titled "3D Additive Manufacturing System, 3D Additive Manufacturing Method, Additive Manufacturing Control Device, And Control Method And Control Program For Additive Manufacturing Control Device") was filed by Matsuura Machinery on May 31, 2016. The application was issued on May 12, 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 |
|---|---|---|
| RENISHAW | Feb 11, 2022 | MATTHEWS |
| SLM SOLUTIONS GROUP | Feb 11, 2022 | SCHICKER |
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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