Patent No. EP2665436 (titled "Method For Querying A Specification Feature Of A Functional Medical Device, Functional Medical Device, Medical Treatment Apparatus, And Control Device") was filed by Fresenius Medical Care Deutschland on Jan 16, 2012. The application was issued on Sep 21, 2022.

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 |
|---|---|---|
| GAMBRO LUNDIA | Jun 21, 2023 | PONZELLINI |
| B BRAUN MELSUNGEN | Jun 20, 2023 | WINTER |
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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