Patent No. EP3017520 (titled "Solar Cell Assembly") was filed by REC Solar PTE on Jul 2, 2014. The application was issued on Oct 14, 2020.

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 |
|---|---|---|
| HANWHA SOLUTIONS | Jul 14, 2021 | SCHMID |
| HOFFMANN EITLE | Jul 14, 2021 | HOFFMANN EITLE |
| CS WISMAR | Jul 14, 2021 | KBN |
| SOLARWATT | Jul 13, 2021 | MEISSNER BOLTE PARTNERSCHAFT MBB |
| KIMPFBECK | Jul 9, 2021 | - |
| STAUBER | Jul 9, 2021 | ZIMMERMANN & PARTNER PATENTANWALTE 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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