Patent No. EP3376315 (titled "Method Of Configuring A Centrifugal Pump Unit With Variable Rotational Speed And Associated Configuration Assistant") was filed by Wilo on Mar 12, 2018. The application was issued on Jun 3, 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 |
|---|---|---|
| GRUNDFOS HOLDING | Feb 25, 2021 | PATENTANWALTE HEMMER LINDFELD FRESE PARTNERSCHAFT 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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