Patent No. EP3053833 (titled "Device For Closing Of Metal Containers With An Insert Lid And Securing It With A Clamp Ring") was filed by Stebler Blech on Jul 27, 2015. The application was issued on Sep 22, 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 |
|---|---|---|
| EMBALLATOR ULRICEHAMNS BLECK | Apr 4, 2018 | ZACCO SWEDEN |
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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