Patent No. EP3167848 (titled "Modular Percutaneous Valve Structure And Delivery Device") was filed by Valve Medical on Jan 13, 2010. The application was issued on Mar 4, 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.
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