Patent No. EP3300083 (titled "Method Of Determining Conditions For Accommodating Radioactive Waste In Container, Radioactive Waste Accommodating Method, And Waste Body Manufactured Using Said Method") was filed by Mitsubishi Heavy Industries on Aug 25, 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 |
|---|---|---|
| GNS GESELLSCHAFT FUR NUKLEAR SERVICE | Feb 14, 2022 | ANDREJEWSKI HONKE PATENT UND RECHTSANWALTE PARTNERSCHAFT 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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