Patent No. EP2528728 (titled "Process For The Production Of A Container For Foodstuff From An Aluminium-Free Planar Composite With An Inner Layer By Hot Folding") was filed by SIG Combibloc Services on Jan 26, 2011. The application was issued on Dec 18, 2019.

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 |
|---|---|---|
| TETRA LAVAL & FINANCE | Sep 17, 2020 | BECK GREENER |
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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