Patent No. EP2816231 (titled "Device For Flushing And/Or For Testing The Pressure And Tightness Of Pipes, In Particular Of Drinking Water And/Or Heating Systems") was filed by Rems on May 31, 2014. The application was issued on May 10, 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 |
|---|---|---|
| CARELA | May 26, 2021 | FRIESE GOEDEN PATENTANWALTE PARTGMBB |
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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