Patent No. EP2820740 (titled "Control Module For An Electrical Energy Accumulator, Energy Accumulator Unit Having Such A Control Module, Uninterruptible Power Supply Unit And Method For Operating A Control Module") was filed by Phoenix Contact on Mar 1, 2013. The application was issued on Feb 8, 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 |
|---|---|---|
| J SCHNEIDER ELEKTROTECHNIK GESELLSCHAFT | Jun 9, 2020 | HUWER |
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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