Patent No. EP3882738 (titled "Method And System For Temporary Supply Of Energy To Buildings") was filed by EL Bjrn on Mar 18, 2020. The application was issued on Apr 12, 2023.

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 |
|---|---|---|
| DANTHERM GROUP | Jan 12, 2024 | PATRADE |
| POLARTHERM | Jan 12, 2024 | KOLSTER |
| RENTALFORETAGEN SERVICE | Jan 8, 2024 | STROM & GULLIKSSON |
| RENTALFORETAGEN | Jan 4, 2024 | STROM & GULLIKSSON |
| HOLTE INDUSTRI | Nov 13, 2023 | - |
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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