Patent No. EP2141892 (titled "Device For Transferring And Displaying Recorded Consumer Information Of A Supply Medium") was filed by Diehl Metering on Dec 19, 2008. The application was issued on Mar 6, 2019.

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 |
|---|---|---|
| TECHEM ENERGY SERVICES | Feb 20, 2017 | KEIL & SCHAAFHAUSEN 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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