Patent No. EP2645743 (titled "Hearing Aid For A Binaural Supply And Method For Providing A Binaural Supply") was filed by Siemens Medical Instruments PTE on Mar 21, 2013. The application was issued on Oct 11, 2017.

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.
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